KR20220118224A - Method for processing audio data and electronic device supporting the same - Google Patents

Abstract

An electronic device comprising wireless communications circuitry, a processor, and a memory operatively coupled to the processor is disclosed. The electronic device may perform: receiving first audio data from a first external electronic device through a wireless communication circuit; generating at least one condition related to an audio signal level based on the first audio data; transmitting the first audio data to a second external electronic device and a third external electronic device; receiving second audio data and third audio data from the second external electronic device and the third external electronic device, respectively, through the wireless communication circuit; identifying audio data exceeding a threshold value included in the at least one condition among the second audio data and the third audio data; identifying at least one external electronic device corresponding to the identified audio data among the second external electronic device and the third external electronic device; and performing an echo cancellation function on audio data related to the identified at least one external electronic device. In addition, various embodiments identified through the specification may be possible. The call quality can be improved.

Description

Audio data processing method and electronic device supporting the same

Various embodiments disclosed in this document relate to an audio data processing method and an electronic device supporting the same.

With the recent development of digital technology, various electronic devices capable of communicating and processing personal information while moving such as a mobile communication terminal, a smart phone, and a tablet personal computer (PC) have been released.

The electronic device may provide various functions to the user by using data obtained from a plurality of input devices. For example, the electronic device may obtain audio data using a plurality of audio input devices (eg, a microphone, a Bluetooth receiving circuit, or a USB circuit) to provide various functions (eg, video chatting and/or media playback). can

With the development of communication technology, a multi-party call function in which a plurality of users can participate has become popular. Furthermore, a PPT (Push To Talk) service in which hundreds of people can participate is being studied.

When a plurality of electronic devices perform a multiway call function, an echo and/or a howling may be formed to generate an amplified roar. The user may be restricted in call function due to echo and/or howling. For example, an echo phenomenon in which a user's speech input reproduced through a speaker is inputted back into a microphone may occur. When the echo phenomenon continues, it may be difficult for the electronic device to normally perform a call function due to a howling phenomenon between the microphone and the speaker.

According to the prior art, the electronic device may perform an echo canceling and/or a howling canceling operation by itself. However, as the number of electronic devices participating in the multiway call function increases, data processing time may increase due to a performance difference between the electronic devices, and the quality of a call provided to a user may deteriorate.

Various embodiments disclosed in this document may provide an electronic device and method for solving the above-described problems.

An electronic device according to an embodiment disclosed in this document may include a wireless communication circuit, a processor, and a memory operatively connected to the processor. For example, the memory may be configured such that, when executed, the processor receives first audio data from a first external electronic device through the wireless communication circuit, and at least one associated with an audio signal level based on the first audio data generates a condition of , transmits the first audio data to a second external electronic device and a third external electronic device, and receives the first audio data from the second external electronic device and the third external electronic device through the wireless communication circuit, respectively Receive second audio data and third audio data, identify audio data exceeding a threshold value included in the at least one condition among the second audio data and the third audio data, and communicate with the second external electronic device One of the third external electronic devices that identifies at least one external electronic device corresponding to the identified audio data and performs an echo cancellation function on audio data associated with the identified at least one external electronic device The above instructions may be stored.

An electronic device for relaying audio data between a plurality of external electronic devices according to an embodiment disclosed herein may include a wireless communication circuit, a processor, and a memory operatively connected to the processor. . For example, when the memory is executed, the processor receives first audio data from a first external electronic device through the wireless communication circuit, and uses the first audio data to set an echo level threshold. threshold), transmitting the first audio data to a second external electronic device and a third external electronic device, and an echo level of the second audio data and the third audio data exceeds the echo level threshold. Identifies data, identifies at least one external electronic device corresponding to the identified audio data among the second external electronic device and the third external electronic device, and audio data associated with the identified at least one external electronic device One or more instructions for selectively performing an echo cancellation function may be stored.

A method for an electronic device to process audio data according to an embodiment disclosed in this document includes receiving first audio data from a first external electronic device through the wireless communication circuit, based on the first audio data to generate at least one condition related to an audio signal level, transmitting the first audio data to a second external electronic device and a third external electronic device, and through the wireless communication circuit, the second external electronic device and receiving second audio data and third audio data, respectively, from the third external electronic device, and audio data exceeding a threshold value included in the at least one condition of the second audio data and the third audio data. identifying at least one external electronic device corresponding to the identified audio data from among the second external electronic device and the third external electronic device; It may include an operation of performing an echo cancellation function on the associated audio data.

An electronic device according to an embodiment disclosed in this document processes audio data transmitted and/or received between a plurality of electronic devices in one electronic device (eg, a server) end in a process of performing a multi-party call function. This can improve call quality.

It is possible to efficiently provide an optimized audio service by identifying characteristics of a plurality of different electronic devices and selectively performing echo canceling and/or howling canceling functions by monitoring a communication state. can

In addition, various effects directly or indirectly identified through this document may be provided.

1 is a block diagram of an electronic device in a network environment, according to various embodiments of the present disclosure;
2 is a block diagram of an audio module, according to various embodiments.
3 is a block diagram illustrating components included in an electronic device according to an exemplary embodiment.
4 is a flowchart illustrating an audio data processing operation of an electronic device according to an exemplary embodiment.
5 is a block diagram illustrating an audio data processing process of an electronic device according to an exemplary embodiment.
6 is a flowchart illustrating an audio data processing operation of an electronic device according to an exemplary embodiment.
7 is a block diagram illustrating an audio data processing process of an electronic device according to an exemplary embodiment.
In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar components.

Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings. However, this is not intended to limit the technology described in this document to specific embodiments, and it should be understood that various modifications, equivalents, and/or alternatives of the embodiments of this document are included. .

1 is a block diagram of an electronic device 101 in a network environment 100, according to various embodiments. Referring to FIG. 1 , in a network environment 100 , an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 . According to an embodiment, the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound output module 155 , a display module 160 , an audio module 170 , and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or an antenna module 197 . In some embodiments, at least one of these components (eg, the connection terminal 178 ) may be omitted or one or more other components may be added to the electronic device 101 . In some embodiments, some of these components (eg, sensor module 176 , camera module 180 , or antenna module 197 ) are integrated into one component (eg, display module 160 ). can be

The processor 120, for example, executes software (eg, a program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120. It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in , process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 . According to an embodiment, the processor 120 is the main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, when the electronic device 101 includes the main processor 121 and the sub-processor 123 , the sub-processor 123 uses less power than the main processor 121 or is set to be specialized for a specified function. can The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .

The secondary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or when the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to an embodiment, the coprocessor 123 (eg, an image signal processor or a communication processor) may be implemented as part of another functionally related component (eg, the camera module 180 or the communication module 190 ). have. According to an embodiment, the auxiliary processor 123 (eg, a neural network processing device) may include a hardware structure specialized for processing an artificial intelligence model. Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which artificial intelligence is performed, or may be performed through a separate server (eg, the server 108). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example not limited The artificial intelligence model may include a plurality of artificial neural network layers. Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example. The artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.

The memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176 ) of the electronic device 101 . The data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134 .

The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system 142 , middleware 144 , or an application 146 .

The input module 150 may receive a command or data to be used by a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 . The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).

The sound output module 155 may output a sound signal to the outside of the electronic device 101 . The sound output module 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.

The display module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 . The display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device. According to an embodiment, the display module 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.

The audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 , or an external electronic device (eg, a sound output module 155 ) connected directly or wirelessly with the electronic device 101 . The electronic device 102) (eg, a speaker or headphones) may output a sound.

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the sensed state. can do. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 177 may support one or more specified protocols that may be used by the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ). According to an embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102 ). According to an embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 may capture still images and moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 may manage power supplied to the electronic device 101 . According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101 . According to one embodiment, battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel. The communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : It may include a local area network (LAN) communication module, or a power line communication module). A corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. The wireless communication module 192 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199 . The electronic device 101 may be identified or authenticated.

The wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR). NR access technology includes high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency) -latency communications)). The wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example. The wireless communication module 192 uses various techniques for securing performance in a high-frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. It may support technologies such as full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, or a large scale antenna. The wireless communication module 192 may support various requirements defined in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ). According to an embodiment, the wireless communication module 192 may include a peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: Downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) can be supported.

The antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern. According to an embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected from the plurality of antennas by, for example, the communication module 190 . can be selected. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, a radio frequency integrated circuit (RFIC)) other than the radiator may be additionally formed as a part of the antenna module 197 .

According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to one embodiment, the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, bottom side) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and a signal ( e.g. commands or data) can be exchanged with each other.

According to an embodiment, the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 . Each of the external electronic devices 102 or 104 may be the same as or different from the electronic device 101 . According to an embodiment, all or a part of operations executed in the electronic device 101 may be executed in one or more external electronic devices 102 , 104 , or 108 . For example, when the electronic device 101 needs to perform a function or service automatically or in response to a request from a user or other device, the electronic device 101 may perform the function or service itself instead of executing the function or service itself. Alternatively or additionally, one or more external electronic devices may be requested to perform at least a part of the function or the service. One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 . The electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of things (IoT) device. The server 108 may be an intelligent server using machine learning and/or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199 . The electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

The electronic device according to various embodiments disclosed in this document may have various types of devices. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

The various embodiments of this document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, but it should be understood to include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the item, unless the relevant context clearly dictates otherwise. As used herein, "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "A , B, or C," each of which may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof. Terms such as "first", "second", or "first" or "second" may simply be used to distinguish an element from other elements in question, and may refer elements to other aspects (e.g., importance or order) is not limited. It is said that one (eg, first) component is “coupled” or “connected” to another (eg, second) component, with or without the terms “functionally” or “communicatively”. When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.

The term “module” used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logic block, component, or circuit. can be used as A module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions. For example, according to an embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present document include one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101). may be implemented as software (eg, the program 140) including For example, the processor (eg, the processor 120 ) of the device (eg, the electronic device 101 ) may call at least one of the one or more instructions stored from the storage medium and execute it. This makes it possible for the device to be operated to perform at least one function according to the called at least one command. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.

According to one embodiment, the method according to various embodiments disclosed in this document may be provided in a computer program product (computer program product). Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a device-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store™) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly, online between smartphones (eg: smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

According to various embodiments, each component (eg, a module or a program) of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. have. According to various embodiments, one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. , or one or more other operations may be added.

2 is a block diagram 200 of an audio module 170, in accordance with various implementations. Referring to FIG. 2 , the audio module 170 includes, for example, an audio input interface 210 , an audio input mixer 220 , an analog to digital converter (ADC) 230 , an audio signal processor 240 , and a DAC. It may include a digital to analog converter 250 , an audio output mixer 260 , or an audio output interface 270 .

The audio input interface 210 is acquired from the outside of the electronic device 101 as part of the input module 150 or through a microphone (eg, a dynamic microphone, a condenser microphone, or a piezo microphone) configured separately from the electronic device 101 . An audio signal corresponding to the sound may be received. For example, when the audio signal is obtained from the external electronic device 102 (eg, a headset or a microphone), the audio input interface 210 is directly connected to the external electronic device 102 through the connection terminal 178 . , or wirelessly (eg, via Bluetooth communication) through the wireless communication module 192 to receive an audio signal. According to an embodiment, the audio input interface 210 may receive a control signal (eg, a volume adjustment signal received through an input button) related to an audio signal obtained from the external electronic device 102 . The audio input interface 210 may include a plurality of audio input channels, and may receive a different audio signal for each corresponding audio input channel among the plurality of audio input channels. According to an embodiment, additionally or alternatively, the audio input interface 210 may receive an audio signal from another component of the electronic device 101 (eg, the processor 120 or the memory 130 ).

The audio input mixer 220 may synthesize a plurality of input audio signals into at least one audio signal. For example, according to an embodiment, the audio input mixer 220 may synthesize a plurality of analog audio signals input through the audio input interface 210 into at least one analog audio signal.

The ADC 230 may convert an analog audio signal into a digital audio signal. For example, according to one embodiment, the ADC 230 converts an analog audio signal received via the audio input interface 210, or additionally or alternatively, an analog audio signal synthesized via the audio input mixer 220 to digital audio. can be converted into a signal.

The audio signal processor 240 may perform various processing on the digital audio signal input through the ADC 230 or the digital audio signal received from other components of the electronic device 101 . For example, according to one embodiment, the audio signal processor 240 may change a sampling rate for one or more digital audio signals, apply one or more filters, perform interpolation processing, amplify or attenuate all or part of a frequency band, You can perform noise processing (such as noise or echo reduction), changing channels (such as switching between mono and stereo), mixing, or specified signal extraction. According to an embodiment, one or more functions of the audio signal processor 240 may be implemented in the form of an equalizer.

The DAC 250 may convert a digital audio signal into an analog audio signal. For example, according to an embodiment, the DAC 250 is a digital audio signal processed by the audio signal processor 240 , or another component of the electronic device 101 (eg, the processor 120 or the memory 130 ). ))) can be converted into an analog audio signal.

The audio output mixer 260 may synthesize a plurality of audio signals to be output into at least one audio signal. For example, according to one embodiment, the audio output mixer 260 may include an audio signal converted to analog through the DAC 250 and another analog audio signal (eg, an analog audio signal received through the audio input interface 210 ). ) can be synthesized into at least one analog audio signal.

The audio output interface 270 transmits an analog audio signal converted through the DAC 250 or an analog audio signal synthesized by the audio output mixer 260 additionally or alternatively through the audio output module 155 to the electronic device 101 . ) can be printed out. The sound output module 155 may include, for example, a speaker such as a dynamic driver or a balanced armature driver, or a receiver. According to an embodiment, the sound output module 155 may include a plurality of speakers. In this case, the audio output interface 270 may output an audio signal having a plurality of different channels (eg, stereo or 5.1 channel) through at least some of the plurality of speakers. According to an embodiment, the audio output interface 270 is directly connected to the external electronic device 102 (eg, an external speaker or headset) through the connection terminal 178 or wirelessly through the wireless communication module 192 . to output an audio signal.

According to an embodiment, the audio module 170 does not separately include the audio input mixer 220 or the audio output mixer 260 , and uses at least one function of the audio signal processor 240 to provide a plurality of digital audio signals. At least one digital audio signal may be generated by synthesizing them.

According to an embodiment, the audio module 170 is an audio amplifier (not shown) capable of amplifying an analog audio signal input through the audio input interface 210 or an audio signal to be output through the audio output interface 270 . (eg speaker amplification circuit). According to an embodiment, the audio amplifier may be configured as a module separate from the audio module 170 .

3 is a block diagram illustrating components included in an electronic device according to an exemplary embodiment.

Referring to FIG. 3 , according to an embodiment, the electronic device 300 (eg, the server 108 of FIG. 1 ) includes a processor 320 (eg, the processor 120 of FIG. 1 ), a memory 330 ( may include: memory 130 of FIG. 1 ), echo cancellation module 351 , howling cancellation module 352 , and/or wireless communication circuitry 390 (eg, communication module 190 of FIG. 1 ). have. Processor 320 is operatively with memory 330 , echo canceling module 351 , howling canceling module 352 , and/or wireless communication circuitry 390 . can be connected The configuration of the electronic device 300 illustrated in FIG. 3 is exemplary, and embodiments of the present document are not limited thereto. For example, the echo cancellation module 351 and/or the howling cancellation module 352 is illustrated as being implemented separately from the processor 320 , but may be implemented as a part and/or included in the main processor 321 . As another example, the electronic device 300 may further include components not shown in FIG. 3 (eg, the interface 177 of FIG. 1 ).

According to various embodiments of the present disclosure, the processor 320 includes a main processor (eg, a central proceeding unit (CPU)) that processes various processes executed in the electronic device (eg, the main processor 121 of FIG. 1 ) and audio data It may include a coprocessor (eg, a digital signal processor (DSP)) (eg, the coprocessor 123 of FIG. 1 ) that processes processes related to transmission and reception of . The processor 320 may be implemented as a system on chip (SoC).

The processor 320 is operatively coupled to the memory 330 , the echo cancellation module 351 , the howling cancellation module 352 , and/or the wireless communication circuitry 390 , according to one embodiment. can do. For example, the processor 320 may process an audio data processing function provided by the electronic device 300 using information stored in the memory 330 . The processor 320 may transmit and/or receive various data from the outside (eg, the external electronic device 301 ) through the wireless communication circuit 390 .

The memory 330 may store one or more instructions that, when executed, cause the processor 320 to cause the electronic device 300 to perform various operations. According to an embodiment, the memory 330 may be operatively connected to the processor 320 , and may transmit stored data to the processor 320 or store data transmitted from the processor 320 . For example, the memory 330 may store a parameter related to a data processing operation of the electronic device 300 . According to an embodiment, the memory 330 may store various applications and/or application managers required for the electronic device 300 to perform an audio data processing operation. For example, the memory 330 may store a recording application and/or a media application. The recording application may provide a function of recording a plurality of audio data. The media application may provide a function of outputting audio data stored in the memory 330 to the outside.

The echo cancellation module 351 may remove an echo signal included in audio data, according to an embodiment. For example, the echo cancellation module 351 may include an echo canceller. The electronic device 300 may use the echo canceller to remove an echo signal generated when audio data or a voice signal output from the electronic device 300 is input again to an input device (eg, a microphone). For example, the echo cancellation module 351 may set audio data or a voice signal output from an output device (eg, a speaker) of the electronic device 300 as echo reference data. The echo cancellation module 351 generates at least one condition related to an audio signal level (eg, an echo level) based on the set echo reference data, and identifies a frequency characteristic of an audio signal included in the audio data. can For example, the echo cancellation module 351 may identify a signal having a specified frequency characteristic as an echo signal using the echo reference data, and remove the identified echo signal from the audio data. For example, the echo cancellation module 351 may configure the audio data exceeding a threshold value included in the at least one condition among audio data received by the electronic device 300 from the outside (eg, the external electronic device 301 ). can be identified. The threshold value may be an echo level threshold value generated by calculating a root mean square (RMS) level of at least a portion of the received audio data.

The howling removal module 352, according to an embodiment, detects a howling that occurs while a plurality of external electronic devices (eg, the external electronic device 301) performs a voice call (eg, a conference call), and , it is possible to perform an operation to remove the generated howling. For example, the howling removal module 352 may include a howling detection circuit. The howling detection circuit may identify a frequency included in the audio data and detect a frequency band estimated to be emitted. The howling detection circuit may detect the howling based on energy ratio information for each frequency band obtained by analyzing audio data. For example, when the energy change rate of the designated frequency band is large, the howling detection circuit may determine that the howling has occurred in the designated frequency band and detect the howling. As another example, when an echo level of audio data received from a plurality of external electronic devices exceeds a specified value (eg, an echo level threshold value), the howling detection circuit may detect one of an audio signal waveform or a reference signal included in the specific audio data. At least one may be used to detect howling. When the energy change rate of the frequency band is periodically changed, the howling detection circuit may identify the designated frequency band as a frequency band in which the howling occurs as a result of monitoring based on the designated period. For example, the howling removal module 352 may include a howling removal circuit. The howling removal circuit may remove the howling based on detection information transmitted from the howling detection circuit. In the howling removal circuit, the detection information transmitted from the howling detection circuit may include at least one of a peak value or an energy value of various frequency bands. For example, a filtering operation of adjusting a gain of a specified frequency band detected by the howling detection circuit to a range in which the howling divergence does not occur may be performed. As another example, the howling detection circuit may perform a filtering operation of changing the audio signal level of the audio data causing the howling to occur to a range in which the howling divergence does not occur. The howling canceling module 352 may operate after the echo canceling module 351 performs an echo canceling function. For example, after the echo canceling module 351 performs the echo canceling function, the howling canceling module 352 may control data received while the electronic device 300 performs wireless communication with a plurality of external electronic devices. When the echo level is less than or equal to a specified value (eg, an echo level threshold), the howling removal function may be terminated. For example, the howling removal module 352 may monitor audio data based on a specified period. When the howling canceling function is finished, the howling removing module 352 may monitor the echo level of audio data received from a plurality of external electronic devices based on a specified period.

According to an embodiment, the wireless communication circuit 390 may perform an operation of electrically connecting the electronic device 300 to the outside (eg, the external electronic device 301 ). The electronic device 300 may receive audio data from the external electronic device 301 through the wireless communication circuit 390 . The audio data may be data corresponding to a user's speech input obtained by the external electronic device 301 using an input device (eg, a microphone). For example, the electronic device 300 performs wireless communication with the external electronic device 301 through the wireless communication circuit 390 for a delay time (eg, a network delay time and/or an electrical path delay time). delay)) may be compensated for. For example, the electronic device 300 may calculate a path delay time based on various data received by performing wireless communication with a plurality of external electronic devices through the wireless communication circuit 390 . The electronic device 300 may continuously perform wireless communication with a plurality of external electronic devices after compensating for each calculated path delay time.

Referring to FIG. 3 , according to an embodiment, the external electronic device 301 (eg, the electronic device 101 of FIG. 1 ) includes a processor 322 (eg, the processor 120 of FIG. 1 ) and a memory 332 . ) (eg, the memory 130 of FIG. 1 ), an audio circuit 372 (eg, the audio module 170 of FIG. 1 ), an input/output device 382 (eg, the input module 150 of FIG. 1 ) and sound output module 155 ), and/or wireless communication circuitry 392 (eg, communication module 190 of FIG. 1 ). The processor 322 may be operatively coupled to the memory 332 , the audio circuitry 372 , the input/output device 382 , and/or the wireless communication circuitry 392 . The configuration of the external electronic device 301 illustrated in FIG. 3 is exemplary, and embodiments of the present document are not limited thereto. For example, the external electronic device 302 may further include components not shown in FIG. 3 (eg, the display module 160, the interface 177, and/or the antenna module 197 of FIG. 1 ). can

Processor 322 , according to one embodiment, configured as part of an input module included in external electronic device 302 or separately from external electronic device 302 (eg, a dynamic microphone, condenser microphone, or piezo microphone) Receives a voice signal corresponding to a sound (eg, a song sound) acquired from the outside (eg, a user) of the external electronic device 301 through the can be obtained As another example, the external electronic device 301 is connected wirelessly (eg, Bluetooth communication) through the wireless communication circuit 392 (eg, the wireless communication module 192 of FIG. 1 ) to transmit audio data and/or can receive For example, the processor 322 converts a voice signal into audio data using an analog-to-digital converter (ADC) included in the input/output device 382 (eg, the ADC 230 of FIG. 2 ). can be converted As another example, the processor 322 converts audio data into voice using a digital-to-analog converter (DAC) (eg, the DAC 250 of FIG. 2 ) included in the input/output device 382 . can be converted. According to an embodiment, the processor 322 may output a voice signal using a sound output module included in the input/output device 382 . For example, the sound output module may include a speaker (SPK) or a receiver (RCV) such as a dynamic driver or a balanced armature driver. When the sound output module includes a plurality of speakers, the processor 322 outputs an audio signal having a plurality of different channels (eg, stereo or 5.1 channel) through at least some of the plurality of speakers. An audio output interface (eg, the audio output interface 270 of FIG. 2 ) may be controlled. For example, the audio output interface may be directly connected to an external (eg, external speaker or headset) through a connection terminal or wirelessly through a wireless communication circuit 392 to output a voice signal.

The memory 332 may store one or more instructions that, when executed, cause the processor 322 to perform various operations of the electronic device 301 . According to an embodiment, the memory 332 is operatively connected to the processor 322 , and may transmit stored data to the processor 322 or store data transmitted from the processor 322 . For example, the memory 332 may store a parameter related to a data processing operation of the external electronic device 301 . According to an embodiment, the memory 332 may store various applications and/or application managers required for the external electronic device 301 to perform an audio data processing operation. For example, the memory 332 may store a recording application and/or a media application. The recording application may provide a function of recording audio data corresponding to a voice signal input to the external electronic device through the input/output device 382 . The media application may provide a function of outputting audio data stored in the memory 332 to the outside.

Audio circuitry 372 may, according to one embodiment, include an audio input interface (eg, audio input interface 210 of FIG. 2 ), an audio output interface (eg, audio output interface 270 of FIG. 2 ), and/or It may include an audio signal processor (eg, the audio signal processor 240 of FIG. 2 ). The audio circuit 372 may perform various processing operations on audio data. For example, the audio circuit 372 may further include an audio amplification circuit (eg, a speaker amplification circuit). The audio amplification circuit may amplify the voice acquired or output from the input/output device 382 . For example, the audio amplification circuit may be configured as a separate module from the audio circuit 372 . According to another embodiment, an audio amplification circuit (eg, a speaker amplification circuit) may be included in the processor 322 or the input/output device 382 .

The input/output device 382 may obtain audio data from the outside (eg, a user) or output a voice corresponding to the audio data to the outside, according to an embodiment. For example, the processor 322 may obtain audio data corresponding to a voice (eg, a user's utterance) sensed from the outside (eg, a user) by using the input/output device 382 . Audio data obtained by the input/output device 382 may be referred to as data obtained by converting a voice received from the outside into an electrical signal. For example, the processor 322 may control the input/output device 382 to convert the sensed voice using an analog-to-digital conversion circuit and obtain the converted audio data. As another example, the processor 322 may control the input/output device 382 to convert audio data using a digital-to-analog conversion circuit, obtain a converted voice, and output the converted voice to the outside. For example, the input/output device 382 may include an audio or a device configured to receive an audio signal (eg, a microphone, a Bluetooth receiving circuit, or a USB circuit). As another example, the input/output device 382 may include a circuit (eg, a speaker, a Bluetooth transmission circuit, a USB circuit) configured to output an electrical signal as an audio or audio signal.

The wireless communication circuit 392 may perform an operation of electrically connecting the external electronic device 301 to the outside (eg, the electronic device 300 ), according to an embodiment. The description of the wireless communication circuit 392 included in the external electronic device 301 may be replaced with the description of the wireless communication circuit 390 included in the electronic device 300 described above.

4 is a flowchart illustrating an audio data processing operation of an electronic device according to an exemplary embodiment.

components included in the first external electronic device 401, the second external electronic device 402, the third external electronic device 403, and/or the fourth external electronic device 404 shown in FIG. The description may be replaced with the description by the external electronic device 301 of FIG. 3 .

In operation 410, the first external electronic device 401 may acquire first audio data. For example, the first external electronic device 401 may obtain various audio data input from the outside (eg, the first user) using an input device (eg, the input module 150 of FIG. 1 ). For example, the first audio data may be referred to as data including the first user's speech input obtained by the first external electronic device 401 using at least one audio input device.

In operation 420, the first external electronic device 401 may transmit the acquired first audio data to the outside. For example, the first external electronic device 401 may transmit the first audio data to the electronic device 400 through a wireless communication circuit (eg, the wireless communication circuit 392 of FIG. 3 ).

In operation 430 , the electronic device 400 (eg, the electronic device 300 of FIG. 3 ) receives a second message from the first external electronic device 401 through a wireless communication circuit (eg, the wireless communication circuit 390 of FIG. 3 ). 1 Audio data can be received. The electronic device 400 may generate various data based on the first audio data. For example, the electronic device 400 may generate at least one condition related to an audio signal level based on the first audio data. For example, the at least one condition may include a threshold value associated with an echo level of audio data. The threshold value may be an echo level threshold value generated by calculating a root mean square (RMS) level of the first audio data.

In operation 440 , the electronic device 400 may transmit the first audio data to the second external electronic device 402 , the third external electronic device 403 , and/or the fourth external electronic device 404 . For example, the electronic device 400 may transmit the first audio data to the plurality of external electronic devices 402 , 403 , and 404 through a wireless communication circuit.

In operation 450 , the plurality of external electronic devices 402 , 403 , and 404 may output the received first audio data and acquire the audio data output through the input device. For example, the second external electronic device 402, the third external electronic device 403, and/or the fourth external electronic device 404 outputs the first audio data through at least one audio output device, The output audio data may be acquired using at least one input device. For another example, the second external electronic device 402 , the third external electronic device 403 , and/or the fourth external electronic device 404 is connected to an external (eg, a second user, a third user, and/or It is also possible to obtain various audio data input from the fourth user).

In operation 460 , the plurality of external electronic devices 402 , 403 , and 404 may transmit audio data to the electronic device 400 through a wireless communication circuit. For example, the second external electronic device 402 may transmit the second audio data to the electronic device 400 . The second audio data may include the second user's speech input obtained by the second external electronic device 402 using the audio input device and at least a portion of the first audio data output through the audio output device. For example, the third external electronic device 403 may transmit third audio data to the electronic device 400 . The third audio data may include a third user's utterance input obtained by the third external electronic device 403 using the audio input device and at least a portion of the first audio data output through the audio output device. For example, the fourth external electronic device 404 may transmit fourth audio data to the electronic device 400 . The fourth audio data may include the fourth user's utterance input obtained by the fourth external electronic device 404 using the audio input device and at least a portion of the first audio data output through the audio output device.

In operation 470 , the electronic device 400 may identify audio data exceeding a specified condition from among the plurality of received audio data. For example, the electronic device 400 may identify audio data exceeding a threshold value included in the at least one condition generated in operation 430 . For example, the electronic device 400 may identify audio data exceeding a threshold value included in the at least one condition among the second audio data, the third audio data, and the fourth audio data. The threshold value may be an echo level threshold value generated by calculating the RMS level of the first audio data. The echo level threshold value may be a condition related to the audio signal level generated by the electronic device 400 based on preset echo reference data. For example, the electronic device 400 may identify a signal having a specified frequency characteristic as an echo signal by using the echo reference data. The electronic device may identify audio data exceeding a threshold value among audio data received from the outside. The threshold value may be an echo level threshold value generated by calculating a root mean square (RMS) level of at least a portion of the received audio data.

In operation 480 , the electronic device 400 may identify at least one external electronic device corresponding to the identified audio data based on the identification result in operation 470 . For example, the electronic device 400 may include at least one external device corresponding to the identified audio data among the second external electronic device 402 , the third external electronic device 403 , and the fourth external electronic device 404 . The electronic device may be identified. The electronic device 400 may perform an echo cancellation function on audio data associated with the identified at least one external electronic device by using an echo cancellation module (eg, the echo cancellation module 351 of FIG. 3 ).

5 is a block diagram illustrating an audio data processing process of an electronic device according to an exemplary embodiment.

According to an embodiment, the first external electronic device 501 (eg, the first external electronic device 401 of FIG. 4 ) may transmit 510 various audio data to the electronic device 500 . For example, reference numeral 501-1 may be referred to as a processing path of audio data acquired by the first external electronic device 501 . The first external electronic device 501 may acquire the first audio data 551 input from the outside (eg, the first user) using an input device (eg, the input module 150 of FIG. 1 ). The first audio data 551 may be referred to as data including the first user's speech input obtained by the first external electronic device 501 using at least one audio input device. The first external electronic device 501 may transmit the acquired first audio data 551 to the electronic device 500 .

According to an embodiment, the electronic device 500 may generate at least one condition related to the audio signal level based on the first audio data 551 received from the first external electronic device 501 . For example, the at least one condition may include the RMS level of the first audio data 551 . According to an embodiment, the electronic device 500 may transmit the first audio data 551 received from the first external electronic device 501 to the outside (eg, a plurality of external electronic devices 502 ). For example, the electronic device 500 transmits the first audio data 551 to the second external electronic device (eg, the second external electronic device 402 of FIG. 4 ) and the third external electronic device (eg, the third external electronic device (eg, the second external electronic device 402 of FIG. 4 ) The data may be transmitted to the third external electronic device 403) and the fourth external electronic device (eg, the fourth external electronic device 404 of FIG. 4 ). Reference numeral 502-1 denotes a data processing path between the electronic device 500 and a second external electronic device, reference numeral 502-2 denotes a data processing path between the electronic device 500 and a third external electronic device, and reference numeral 502-2 denotes a data processing path between the electronic device 500 and a third external electronic device. 3 may be referred to as a data processing path between the electronic device 500 and the fourth external electronic device, respectively. The calculated and generated echo level threshold may be included.

According to an embodiment, the plurality of external electronic devices 502 outputs the first audio data 551 received from the electronic device 500 through an audio output device, and uses the audio input device to output the first audio data 551 . One audio data 551 may be acquired. The plurality of external electronic devices 502 may acquire the output first audio data 551 and various audio data received from the outside. For example, the second external electronic device may acquire second audio data 552 . The second audio data 552 may include a second user's speech input obtained by the external electronic device using the audio input device and at least a portion of the first audio data 551 output through the audio output device. For example, the third external electronic device may acquire third audio data 553 . The third audio data 553 may include a third user's speech input obtained by the third external electronic device using the audio input device and at least a portion of the first audio data 551 output through the audio output device. have. For example, the fourth external electronic device may acquire fourth audio data 554 . The fourth audio data 554 may include the fourth user's speech input obtained by the fourth external electronic device using the audio input device and at least a portion of the first audio data 551 output through the audio output device. have. In a process in which the plurality of electronic devices 502 perform wireless communication with the electronic device 500, different delay times (eg, network delay time or electrical path delay may occur. For example, in a process in which the electronic device 500 performs wireless communication with the plurality of external electronic devices 502 , a first path delay time D1 between the second external electronic devices and a second path delay time D1 between the second external electronic devices and the third external electronic devices A second path delay time D2 and a third path delay time D3 may occur between the forty-third external electronic device. The plurality of external electronic devices 502 may use audio data (second audio data 552 , third audio data 553 , and fourth audio data 554 ) obtained based on different path delay times. Each may be transmitted to the electronic device 500 .

According to an embodiment, the electronic device 500 may receive various audio data from a plurality of external electronic devices 502 through a wireless communication circuit. For example, the electronic device 500 performs a first path delay time D1 and a second path delay time D1 based on the second audio data 552 , the third audio data 553 , and the fourth audio data 554 , respectively. A path delay time D2 and a third path delay time D32 may be calculated. The electronic device 500 may perform wireless communication with the plurality of external electronic devices 502 by compensating for the calculated path delay times. For example, the electronic device 500 generates a specified condition generated based on the first audio data 551 among the second audio data 552 , the third audio data 553 , and the fourth audio data 554 . Audio data exceeding (eg echo level threshold) can be identified. The electronic device 500 may identify at least one external electronic device (eg, a fourth external electronic device) corresponding to the identified at least one piece of audio data. The electronic device 500 may perform an echo cancellation function on audio data associated with at least one identified external electronic device. As an example, the electronic device 500 may perform an echo cancellation function on audio data associated with the identified at least one external electronic device using an echo cancellation module (eg, the echo cancellation module 351 of FIG. 3 ). have.

6 is a flowchart illustrating an audio data processing operation of an electronic device according to an exemplary embodiment.

In FIG. 6 , the description of the same or similar operations as those of FIG. 4 may be replaced by the description of FIG. 4 . For example, the description of operations 610 to 650 of FIG. 6 may be replaced with the description of operations 410 through 450 of FIG. 4 .

In operation 660 , the fourth external electronic device 604 may transmit fourth audio data to the electronic device 600 . For example, the fourth audio data transmitted by the fourth external electronic device 604 is output through the fourth user's speech input and the audio output device acquired by the fourth external electronic device 604 using the audio input device. It may include at least a portion of the first audio data. For example, at least a portion of the first audio data output through the audio output device may be referred to as an echo signal, and a howling may be generated in the course of performing a multi-party call function between a plurality of electronic devices. .

In operation 670 , the electronic device 600 may receive fourth audio data and determine whether the fourth audio data exceeds a specified condition. In the determining of the specified condition, the electronic device 600 uses a howling removal module (eg, the howling removal module 352 of FIG. 3 ) to designate echo levels of a plurality of audio data (eg, an echo level threshold). value) may correspond to an operation of determining whether or not the value is exceeded. For example, when an echo level of audio data received from a plurality of external electronic devices exceeds a specified value, the electronic device 600 uses at least one of an audio signal waveform or a reference signal included in the specific audio data. Howling can be detected. For example, the electronic device 600 may determine whether the echo level of the fourth audio data exceeds an echo level threshold. When the echo level of the fourth audio data exceeds the echo level threshold, the electronic device 600 identifies a fourth external electronic device 604 corresponding to the fourth audio data, and the fourth external electronic device 604 ) may perform a howling removal function on audio data associated with the . The description of the howling removal function performed by the electronic device 600 may be replaced with the description of the howling removal module 352 of FIG. 3 described above.

In FIG. 6 , the description of operation 670 is disclosed separately from the description of operations 470 and 480 of FIG. 4 , but embodiments of the present document are not limited thereto. For example, after performing operations 470 and 480 , the electronic device 600 may perform operations 670 in the process of transmitting and/or receiving audio data through wireless communication with the plurality of external electronic devices 601 to 604 . can As another example, the electronic device 600 may perform operation 670 after omitting operations 470 and 480 .

7 is a block diagram 700 illustrating an audio data processing process of an electronic device according to an exemplary embodiment.

Referring to FIG. 7 , according to an embodiment, the electronic device 700 transmits various data through a plurality of external electronic devices 701 to 704 and a wireless communication circuit (eg, the communication module 190 of FIG. 1 ). may transmit and/or receive. For example, the electronic device 700 may process and/or operate on audio data processed while the plurality of external electronic devices 701 to 704 perform a multi-party call function. Hereinafter, an operation of the electronic device 700 processing audio data will be sequentially described.

Referring to reference number 710 , the electronic device 700 may receive audio data from the first external electronic device 701 through a wireless communication circuit. For example, audio data transmitted by the first external electronic device 701 may be acquired by the first external electronic device 701 using at least one audio input device (eg, the input module 150 of FIG. 1 ). It may be referred to as data including the first user's utterance input. The electronic device 700 may receive the first audio data and generate at least one condition related to the audio signal level based on the first audio data. For example, the at least one condition related to the audio signal level may include a threshold value (eg, an echo level threshold value). The electronic device 700 stores the generated echo level threshold in a memory (eg, the memory 130 of FIG. 1 ), and compares the echo levels of audio data other than the first audio data with the stored echo level threshold. action can be performed.

Referring to reference number 720 , the electronic device 700 may transmit the first audio data to the second external electronic device 702 , the third external electronic device 703 , and the fourth external electronic device 704 . For example, the plurality of external electronic devices 701 to 704 may output the received first audio data through at least one audio output device (eg, the sound output module 155 of FIG. 1 ). The plurality of external electronic devices 701 to 704 may acquire audio data including a part of the output first audio data and an external input acquired using at least one audio input device.

With reference to reference number 730 , the fourth external electronic device 704 may transmit audio data obtained by reference number 720 to the electronic device 700 . For example, the fourth external electronic device 704 may transmit fourth audio data to the electronic device 700 . The fourth audio data may include a fourth user utterance input obtained by the fourth external electronic device 704 using the audio input device and at least a portion of the first audio data output through the audio output device. The electronic device 700 may analyze the received fourth audio data based on the threshold value generated by reference number 710 . For example, the electronic device 700 may determine whether the echo level of the fourth audio data exceeds a pre-generated echo level threshold. For example, the electronic device 700 may detect a howling generated by the audio signal waveform included in the first audio data or the fourth audio data transmitted by the fourth reference signal external electronic device 704 .

Referring to reference number 740, the electronic device 700 performs a specified function using the echo cancellation module 751 and/or the howling cancellation module 752, and then transmits audio data to an external (eg, a first external electronic device ( 701), the second external electronic device 702, and the third external electronic device 703). For example, when it is determined that the echo level of the fourth audio data exceeds the echo level threshold, the electronic device 700 performs the howling removal module 752 with respect to the audio data associated with the fourth external electronic device 704 . (eg, the howling removal module 352 of FIG. 3 ) may be used to perform the howling removal operation. For example, the electronic device 700 may change an audio signal level of audio data associated with the fourth external electronic device 704 and transmit audio data including the changed audio signal level to the outside.

An electronic device according to an embodiment disclosed in this document may include a wireless communication circuit, a processor, and a memory operatively connected to the processor. For example, the memory may be configured such that, when executed, the processor receives first audio data from a first external electronic device through the wireless communication circuit, and at least one associated with an audio signal level based on the first audio data generates a condition of , transmits the first audio data to a second external electronic device and a third external electronic device, and receives the first audio data from the second external electronic device and the third external electronic device through the wireless communication circuit, respectively Receive second audio data and third audio data, identify audio data exceeding a threshold value included in the at least one condition among the second audio data and the third audio data, and communicate with the second external electronic device One of the third external electronic devices that identifies at least one external electronic device corresponding to the identified audio data and performs an echo cancellation function on audio data associated with the identified at least one external electronic device The above instructions may be stored.

According to an embodiment, the threshold value may be an echo level threshold value generated by calculating a root mean square (RMS) level of the first audio data.

According to an embodiment, the first audio data includes a first user's speech input obtained by the first external electronic device using at least one audio input device, and the second audio data includes the second audio data. 2 an external electronic device includes at least a portion of a second user's speech input acquired using an audio input device and at least a portion of the first audio data output through an audio output device, wherein the third audio data includes: The electronic device may include a third user's utterance input obtained using the audio input device and at least a portion of the first audio data output through the audio output device.

According to an embodiment, when the one or more instructions are executed, a first path delay that occurs while the processor performs wireless communication with the second external electronic device based on the second audio data calculating a time, calculating a second path delay time generated while performing wireless communication with the third external electronic device based on the third audio data, and calculating the calculated first path delay time and the second path delay time It may be configured to perform wireless communication with the second external electronic device and the third external electronic device by compensating for a path delay time.

According to an embodiment, when the one or more instructions are executed, after the processor performs the echo cancellation function, an echo level of audio data received from the identified at least one external electronic device is designated. Monitoring is performed based on a period, and when the echo level of the monitored audio data exceeds the echo level threshold, howling canceling the audio data associated with the identified at least one external electronic device It can be set to perform a function.

According to an embodiment, when the one or more instructions are executed, the processor monitors audio data received from the second electronic device and the third electronic device based on the specified period, and , when the echo level of the monitored audio data is equal to or less than the threshold value, the howling removal function may be set to end.

According to an embodiment, the one or more instructions may be executed by the processor when the echo level of the audio data received from the identified at least one external electronic device exceeds the threshold value. The method may be configured to detect howling generated by the identified at least one external electronic device by using at least one of an audio signal waveform or a reference signal included in the first audio data.

According to an embodiment, the one or more instructions, when executed, control the processor to change an audio signal level of audio data associated with the identified at least one external electronic device, and configure the wireless communication circuitry. It can be set to be transmitted to the outside through

An electronic device for relaying audio data between a plurality of external electronic devices according to an embodiment disclosed herein may include a wireless communication circuit, a processor, and a memory operatively connected to the processor. . For example, when the memory is executed, the processor receives first audio data from a first external electronic device through the wireless communication circuit, and uses the first audio data to set an echo level threshold. threshold), transmitting the first audio data to a second external electronic device and a third external electronic device, and an echo level of the second audio data and the third audio data exceeds the echo level threshold. Identifies data, identifies at least one external electronic device corresponding to the identified audio data among the second external electronic device and the third external electronic device, and audio data associated with the identified at least one external electronic device One or more instructions for selectively performing an echo cancellation function may be stored.

According to an embodiment, when the one or more instructions are executed, a first path delay that occurs while the processor performs wireless communication with the second external electronic device based on the second audio data calculating a time, calculating a second path delay time generated while performing wireless communication with the third external electronic device based on the third audio data, and calculating the calculated first path delay time and the second path delay time It may be configured to perform wireless communication with the second external electronic device and the third external electronic device by compensating for a path delay time.

According to one embodiment, the one or more instructions, when executed, cause the processor to:

After performing the echo cancellation function, an echo level of audio data received from the identified at least one external electronic device is monitored based on a specified period, and the echo level of the monitored audio data is determined to be the echo level When the threshold value is exceeded, it may be set to perform a howling canceling function on the audio data.

According to an embodiment, the one or more instructions, when executed, control the processor to change an audio signal level of the audio data associated with the identified at least one external electronic device, the wireless communication circuitry It may be set to transmit to the outside through .

A method for an electronic device to process audio data according to an embodiment disclosed in this document includes receiving first audio data from a first external electronic device through the wireless communication circuit, based on the first audio data to generate at least one condition related to an audio signal level, transmitting the first audio data to a second external electronic device and a third external electronic device, and through the wireless communication circuit, the second external electronic device and receiving second audio data and third audio data, respectively, from the third external electronic device, and audio data exceeding a threshold value included in the at least one condition of the second audio data and the third audio data. identifying at least one external electronic device corresponding to the identified audio data from among the second external electronic device and the third external electronic device; It may include an operation of performing an echo cancellation function on the associated audio data.

According to an embodiment, in a method for providing a function for an electronic device to process audio data, a first path delay occurring while performing wireless communication with the second external electronic device based on the second audio data calculating a time, calculating a second path delay time that occurs while performing wireless communication with the third external electronic device based on the third audio data, and the calculated first path delay time; Compensating for the second path delay time may further include performing wireless communication with the second external electronic device and the third external electronic device.

According to an embodiment, in a method for providing a function for an electronic device to process audio data, after performing the echo cancellation function, an echo level of the audio data associated with the identified at least one external electronic device is designated The method may further include an operation of monitoring based on a period and performing a howling canceling function on the audio data when the echo level of the monitored audio data exceeds the echo level threshold value. can

According to an embodiment of the present disclosure, in a method for providing a function for an electronic device to process audio data, after performing the howling removal function, the audio data received from the second electronic device and the third electronic device are The method may further include an operation of monitoring based on a period and an operation of terminating execution of the howling removal function when the echo level of the monitored audio data is equal to or less than the threshold value.

According to an embodiment, the monitoring (monitoring) of the echo level of the audio data received from the at least one identified external electronic device based on a specified period may include: When the echo level of the audio data exceeds the threshold, a howling generated by the identified at least one external electronic device is performed using at least one of an audio signal waveform or a reference signal included in the first audio data. It may include a sensing motion.

According to an embodiment, the operation of performing a howling canceling function on the audio data associated with the identified at least one external electronic device may include: It may include controlling to change the signal level and transmitting the signal to the outside through the wireless communication circuit.

Claims (20)

In an electronic device,
radio communication circuit;
processor; and
a memory operatively coupled to the processor; wherein the memory, when executed, causes the processor to:
receiving first audio data from a first external electronic device through the wireless communication circuit;
generating at least one condition related to an audio signal level based on the first audio data;
transmitting the first audio data to a second external electronic device and a third external electronic device;
receiving second audio data and third audio data from the second external electronic device and the third external electronic device, respectively, through the wireless communication circuit;
identify audio data exceeding a threshold value included in the at least one condition among the second audio data and the third audio data;
identify at least one external electronic device corresponding to the identified audio data from among the second external electronic device and the third external electronic device;
and storing one or more instructions for performing an echo cancellation function with respect to audio data associated with the identified at least one external electronic device.
The method according to claim 1,
The threshold value is an echo level threshold value generated by calculating a root mean square (RMS) level of the first audio data.
The method according to claim 1,
The first audio data includes a first user's speech input obtained by the first external electronic device using at least one audio input device,
The second audio data includes a second user's speech input obtained by the second external electronic device using an audio input device and at least a portion of the first audio data output through an audio output device,
The third audio data includes a third user's speech input obtained by the third external electronic device using an audio input device and at least a portion of the first audio data output through an audio output device, .
The method according to claim 1,
The one or more instructions, when executed, cause the processor to:
calculating a first path delay time that occurs while performing wireless communication with the second external electronic device based on the second audio data;
calculating a second path delay time that occurs while performing wireless communication with the third external electronic device based on the third audio data;
The electronic device is configured to perform wireless communication with the second external electronic device and the third external electronic device by compensating for the calculated first path delay time and the second path delay time.
The method according to claim 1,
The one or more instructions, when executed, cause the processor to:
after performing the echo cancellation function, monitoring an echo level of audio data received from the identified at least one external electronic device based on a specified period;
an electronic device configured to perform a howling canceling function on the audio data associated with the identified at least one external electronic device when the echo level of the monitored audio data exceeds the echo level threshold.
6. The method of claim 5,
The one or more instructions, when executed, cause the processor to:
monitoring audio data received from the second electronic device and the third electronic device based on the specified period;
and when the echo level of the monitored audio data is equal to or less than the threshold value, the electronic device is configured to terminate the howling cancellation function.
6. The method of claim 5,
The one or more instructions, when executed, cause the processor to:
When the echo level of the audio data received from the identified at least one external electronic device exceeds the threshold value, the identification is performed using at least one of an audio signal waveform or a reference signal included in the first audio data. An electronic device configured to detect a howling caused by the at least one external electronic device.
6. The method of claim 5,
The one or more instructions, when executed, cause the processor to:
an electronic device configured to control to change an audio signal level of audio data associated with the identified at least one external electronic device, and transmit to the outside through the wireless communication circuit.
A method for providing a function for an electronic device to process audio data, the method comprising:
receiving first audio data from a first external electronic device through the wireless communication circuit;
generating at least one condition related to an audio signal level based on the first audio data;
transmitting the first audio data to a second external electronic device and a third external electronic device;
receiving second audio data and third audio data from the second external electronic device and the third external electronic device, respectively, through the wireless communication circuit;
identifying audio data exceeding a threshold value included in the at least one condition among the second audio data and the third audio data;
identifying at least one external electronic device corresponding to the identified audio data from among the second external electronic device and the third external electronic device; and
performing an echo cancellation function on audio data associated with the identified at least one external electronic device; A method comprising
10. The method of claim 9,
The threshold value is an echo level threshold value generated by calculating a root mean square (RMS) level of the first audio data.
10. The method of claim 9,
A method for providing a function for an electronic device to process audio data, the method comprising:
calculating a first path delay time that occurs while performing wireless communication with the second external electronic device based on the second audio data;
calculating a second path delay time that occurs while performing wireless communication with the third external electronic device based on the third audio data; and
performing wireless communication with the second external electronic device and the third external electronic device by compensating for the calculated first path delay time and the second path delay time; A method further comprising:
10. The method of claim 9,
A method for providing a function for an electronic device to process audio data, the method comprising:
after performing the echo cancellation function, monitoring an echo level of audio data received from the identified at least one external electronic device based on a specified period; and
performing a howling canceling function on the audio data associated with the identified at least one external electronic device when the echo level of the monitored audio data exceeds the echo level threshold; A method further comprising:
13. The method of claim 12,
A method for providing a function for an electronic device to process audio data, the method comprising:
monitoring audio data received from the second electronic device and the third electronic device based on the specified period; and
terminating execution of the howling cancellation function when the echo level of the monitored audio data is equal to or less than the threshold value; A method further comprising:
13. The method of claim 12,
The operation of monitoring an echo level of the audio data received from the identified at least one external electronic device based on a specified period includes:
When the echo level of the audio data received from the identified at least one external electronic device exceeds the threshold value, the identification is performed using at least one of an audio signal waveform or a reference signal included in the first audio data. detecting howling generated by at least one external electronic device; A method comprising
13. The method of claim 12,
The operation of performing a howling canceling function on the audio data associated with the identified at least one external electronic device includes:
controlling an audio signal level of audio data associated with the identified at least one external electronic device to change, and transmitting it to the outside through the wireless communication circuit; A method comprising
An electronic device for relaying audio data between a plurality of external electronic devices, the electronic device comprising:
radio communication circuit;
processor; and
a memory operatively coupled to the processor; wherein the memory, when executed, causes the processor to:
receiving first audio data from a first external electronic device through the wireless communication circuit;
After generating an echo level threshold using the first audio data, the first audio data is transmitted to a second external electronic device and a third external electronic device;
identify data in which an echo level exceeds the echo level threshold value among the second audio data and the third audio data;
identify at least one external electronic device corresponding to the identified audio data among the second external electronic device and the third external electronic device;
and storing one or more instructions for selectively performing an echo cancellation function on audio data associated with the identified at least one external electronic device.
17. The method of claim 16,
The first audio data includes a first user's speech input obtained by the first external electronic device using at least one audio input device,
The second audio data includes a second user's speech input obtained by the second external electronic device using an audio input device and at least a portion of the first audio data output through an audio output device,
The third audio data includes a third user's speech input obtained by the third external electronic device using an audio input device and at least a portion of the first audio data output through an audio output device, .
17. The method of claim 16,
The one or more instructions, when executed, cause the processor to:
calculating a first path delay time that occurs while performing wireless communication with the second external electronic device based on the second audio data;
calculating a second path delay time that occurs while performing wireless communication with the third external electronic device based on the third audio data;
The electronic device is configured to perform wireless communication with the second external electronic device and the third external electronic device by compensating for the calculated first path delay time and the second path delay time.
17. The method of claim 16,
The one or more instructions, when executed, cause the processor to:
after performing the echo cancellation function, monitoring an echo level of audio data received from the identified at least one external electronic device based on a specified period;
an electronic device configured to perform a howling canceling function on the audio data associated with the identified at least one external electronic device when the echo level of the monitored audio data exceeds the echo level threshold.
20. The method of claim 19,
The one or more instructions, when executed, cause the processor to:
an electronic device configured to control to change an audio signal level of audio data associated with the identified at least one external electronic device, and transmit to the outside through the wireless communication circuit.

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