CN116582803A - Self-adaptive control method, system, storage medium and terminal for loudspeaker array - Google Patents
Self-adaptive control method, system, storage medium and terminal for loudspeaker array Download PDFInfo
- Publication number
- CN116582803A CN116582803A CN202310645962.1A CN202310645962A CN116582803A CN 116582803 A CN116582803 A CN 116582803A CN 202310645962 A CN202310645962 A CN 202310645962A CN 116582803 A CN116582803 A CN 116582803A
- Authority
- CN
- China
- Prior art keywords
- loudspeaker
- sound field
- time domain
- impulse response
- adaptive control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000004044 response Effects 0.000 claims abstract description 39
- 230000003044 adaptive effect Effects 0.000 claims description 31
- 230000005236 sound signal Effects 0.000 claims description 22
- 230000006870 function Effects 0.000 claims description 5
- 238000005316 response function Methods 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- 230000000452 restraining effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a self-adaptive control method, a system, a storage medium and a terminal of a loudspeaker array, wherein the self-adaptive control method of the loudspeaker array comprises the following steps: sequentially turning on each loudspeaker in the loudspeaker array; the loudspeaker which is started later determines the time domain impulse response of the loudspeaker which is started later according to the sound field formed by the loudspeaker which is started earlier; the system comprises: speaker opening means and time domain impulse response determining means; the storage medium includes: a memory; the terminal comprises: a processor. The invention has the advantages of realizing the remote control of the loudspeaker array of the self-adaptive loudspeaker array and the remote cloud console, and the like.
Description
Technical Field
The present invention relates to the technical field of speaker control, and in particular, to a method, a system, a storage medium, and a terminal for adaptively controlling a speaker array.
Background
The speaker array is an array type speaker system formed by arranging a plurality of speakers according to a certain geometric array type, and related conventional technologies generally change geometric structure parameters of the speaker array and electrical signal parameters of each speaker array element to form different specific sound fields, so that self-adaptive control of the speaker array cannot be realized, and external environments have great influence on the use effect of the speaker array, for example: when the speaker array is in a very noisy use environment, the speaker array having a specific sound field is easily caused to have poor use effect due to interference from an external environment.
Disclosure of Invention
In order to improve the use effect of the traditional loudspeaker array, the invention provides a self-adaptive control method, a system, a storage medium and a terminal of the loudspeaker array.
In a first aspect, the present invention provides an adaptive control method of a speaker array, which may include the steps of:
sequentially turning on each loudspeaker in the loudspeaker array;
the loudspeaker which is started later determines the time domain impulse response of the loudspeaker which is started later according to the sound field formed by the loudspeaker which is started earlier.
By adopting the technical scheme, the self-adaptive control of the loudspeaker array is realized.
The present invention may be further configured in a preferred example to:
the step of determining the time domain impulse response of the later-on loudspeaker according to the sound field formed by the earlier-on loudspeaker comprises:
a controller electrically connected with the speaker array, for collecting the audio signals output by the previously opened speakers;
a sound field formed by the previously opened speakers is determined based on the audio signal, from which the later opened speakers determine a time domain impulse response.
In the step of determining the time domain impulse response of the later-opened loudspeaker according to the sound field formed by the earlier-opened loudspeaker, the method for determining the time domain impulse response is a function of:
wherein f (t) is a time domain impulse response function, t is time domain impulse response time, the value range of tau is [0, ] and infinity ], f is the frequency of the audio signal of the sound field, and n is the number of loudspeakers.
In the above technical solution, the time domain impulse response of the loudspeaker which is started later is determined by the audio signal output by the loudspeaker which is started before, so that the sound field of the adaptive loudspeaker array is controlled to be very stable.
The present invention may be further configured in a preferred example to:
the adaptive control method of the speaker array may further include the steps of:
the later-opened loudspeaker adjusts the time domain impulse response and suppresses side lobes of a sound field formed by the earlier-opened loudspeaker.
By adopting the technical scheme, the side lobe of the sound field formed by the loudspeaker can be suppressed, and the using effect of the loudspeaker array is improved.
The present invention may be further configured in a preferred example to:
in the step of adjusting the time domain impulse response of the loudspeaker which is started later and restraining the side lobe of the sound field formed by the loudspeaker which is started before, the method for restraining the side lobe of the sound field is as follows:
wherein B is suppressed sound field side lobe, B p For side lobe response of sound field, B m And f is the audio signal frequency of the sound field, and m is a positive integer.
By adopting the technical scheme, the side lobe is suppressed through the frequency of the audio signal of the sound field, and even if the loudspeaker array is in a very noisy use environment, a very good side lobe suppression effect can be achieved.
In a second aspect, the present invention provides an adaptive control system implementing the adaptive control method of a speaker array, the adaptive control system may include:
a speaker opening device for sequentially opening each speaker in the speaker array;
time domain impulse response determining means for determining the time domain impulse response of a later-on loudspeaker based on the sound field formed by a previously-on loudspeaker.
Aspects of another aspect of the present invention may be further configured in a preferred example to:
the adaptive control system further includes:
the audio signal collector is connected with the controller of the later-opened loudspeaker through an electric signal, and is used for collecting the audio signals output by the earlier-opened loudspeaker.
Aspects of another aspect of the present invention may be further configured in a preferred example to:
the adaptive control system may further include:
and the sound field sidelobe suppressor is used for adjusting the time domain impulse response of the loudspeaker which is started later and suppressing sidelobes of a sound field formed by the loudspeaker which is started earlier.
In a third aspect, the present invention provides a storage medium comprising: and the memory stores computer instructions, the computer instructions are loaded by the memory, and the steps of the adaptive control method of the loudspeaker array are executed.
In a fourth aspect, the present invention provides a terminal, comprising: a processor that performs the steps of the adaptive control method of the speaker array.
In summary, compared with the prior art, the invention has at least the following beneficial effects:
1. according to the self-adaptive control method of the loudspeaker array, through the self-adaptive control of the loudspeaker array, certain specific sound fields of the sound field formed by the loudspeaker array can be formed by the loudspeaker according to the sound field environment where the loudspeaker is positioned, so that the influence of the external environment on the use effect of the loudspeaker array can be eliminated.
2. The self-adaptive control method of the loudspeaker array suppresses the side lobe through the audio signal frequency, and can better improve the use effect of the loudspeaker array.
3. In addition, the terminal can adopt a remote cloud console, and a plurality of users can remotely regulate and control the loudspeaker array through the remote cloud console, so that the remote regulation and control of the loudspeaker array is further facilitated.
Drawings
Fig. 1 is an overall flowchart of an adaptive control method of a speaker array of the present invention.
Fig. 2 is a block diagram of an adaptive control system implementing the adaptive control method of the present invention.
Fig. 3 is a schematic view of a storage medium connection terminal of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Examples
As shown in fig. 1, which is an overall flowchart of the adaptive control method of a speaker array of the present embodiment, the adaptive control method of a speaker array of the present embodiment implements adaptive control of a speaker array, and specifically includes the following steps:
sequentially turning on each loudspeaker in the loudspeaker array;
the loudspeaker which is started later determines the time domain impulse response of the loudspeaker which is started later according to the sound field formed by the loudspeaker which is started earlier.
The step of determining the time domain impulse response of the loudspeaker after opening specifically includes:
a controller electrically connected with the speaker array, for collecting the audio signals output by the previously opened speakers;
a sound field formed by the previously opened speakers is determined based on the audio signal, from which the later opened speakers determine a time domain impulse response.
In order to make the sound field control of the adaptive speaker array stable, the time domain impulse response of the speaker which is started later is determined by the audio signal output by the speaker which is started before, specifically:
in the step of determining the time domain impulse response of the later-opened loudspeaker according to the sound field formed by the earlier-opened loudspeaker, the method for determining the time domain impulse response is a function of:
wherein f (t) is a time domain impulse response function, t is time domain impulse response time, the value range of tau is [0, ] and infinity ], f is the frequency of the audio signal of the sound field, and n is the number of loudspeakers.
In order to better improve the use effect of the speaker array, the adaptive control method of the speaker array of the embodiment specifically further includes the following steps:
the later-opened loudspeaker adjusts the time domain impulse response and suppresses side lobes of a sound field formed by the earlier-opened loudspeaker.
When the loudspeaker array is in a very noisy use environment, in order to achieve a very good side lobe suppression effect, the side lobes are suppressed by adopting the following method:
in the step of adjusting the time domain impulse response of the loudspeaker which is started later and restraining the side lobe of the sound field formed by the loudspeaker which is started before, the method for restraining the side lobe of the sound field is as follows:
wherein B is suppressed sound field side lobe, B p For side lobe response of sound field, B m And f is the audio signal frequency of the sound field, and m is a positive integer.
As shown in fig. 2, a block diagram of an adaptive control system for implementing the adaptive control method of a speaker array according to the present embodiment, where the adaptive control system specifically includes:
a speaker opening device for sequentially opening each speaker in the speaker array;
time domain impulse response determining means for determining a time domain impulse response of a later-on speaker from a sound field formed by a previously-on speaker;
the audio signal collector is connected with the controller of the later-opened loudspeaker through an electric signal and is used for collecting the audio signal output by the earlier-opened loudspeaker;
and the sound field sidelobe suppressor is used for adjusting the time domain impulse response of the loudspeaker which is started later and suppressing sidelobes of a sound field formed by the loudspeaker which is started earlier.
As shown in fig. 3, a schematic diagram of a storage medium connection terminal of the present embodiment is shown, where the storage medium includes: a memory in which computer instructions are stored, the computer instructions being loaded by the memory and executing the steps of the adaptive control method of the speaker array; the terminal comprises: a processor that performs the steps of the adaptive control method of the speaker array; the storage medium is installed on the loudspeaker array, the storage medium and the terminal are connected through a network, a user can issue a remote control instruction to the storage medium through the terminal, the storage medium is matched with the terminal to remotely control the loudspeaker array, the close-range control of the control loudspeaker array is inconvenient in some application scenes, when the situation that the control is needed in the use process of the loudspeaker array occurs, the loudspeaker array is remotely controlled through the terminal by the self-adaptive control method of the embodiment, remote control of the loudspeaker array is convenient, in addition, the terminal of the embodiment adopts a remote cloud console, a plurality of users can remotely control the loudspeaker array through the remote cloud console, and the remote control of the loudspeaker array is further facilitated.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (10)
1. A method for adaptively controlling a speaker array, comprising the steps of:
sequentially turning on each loudspeaker in the loudspeaker array;
the loudspeaker which is started later determines the time domain impulse response of the loudspeaker which is started later according to the sound field formed by the loudspeaker which is started earlier.
2. The method of adaptive control of a loudspeaker array according to claim 1, wherein the step of determining the time domain impulse response of the later-on loudspeaker from the sound field formed by the earlier-on loudspeaker comprises:
a controller electrically connected with the speaker array, for collecting the audio signals output by the previously opened speakers;
a sound field formed by the previously opened speakers is determined based on the audio signal, from which the later opened speakers determine a time domain impulse response.
3. The method of adaptively controlling a speaker array according to claim 1, wherein in the step of determining a time domain impulse response of the later-on speaker from a sound field formed by the earlier-on speaker, the method of determining the time domain impulse response is a function of:
wherein f (t) is a time domain impulse response function, t is time domain impulse response time, the value range of tau is [0, ] and infinity ], f is the frequency of the audio signal of the sound field, and n is the number of loudspeakers.
4. The adaptive control method of a speaker array according to claim 1, further comprising the steps of:
the later-opened loudspeaker adjusts the time domain impulse response and suppresses side lobes of a sound field formed by the earlier-opened loudspeaker.
5. The method of claim 4, wherein in the step of suppressing side lobes of a sound field formed by a previously opened speaker, the method of suppressing the side lobes of the sound field is a suppression function of:
wherein B is suppressed sound field side lobe, B p For side lobe response of sound field, B m And f is the audio signal frequency of the sound field, and m is a positive integer.
6. An adaptive control system that implements the adaptive control method of a speaker array according to claim 1, comprising:
a speaker opening device for sequentially opening each speaker in the speaker array;
time domain impulse response determining means for determining the time domain impulse response of a later-on loudspeaker based on the sound field formed by a previously-on loudspeaker.
7. The adaptive control system of claim 6, further comprising:
the audio signal collector is connected with the controller of the later-opened loudspeaker through an electric signal, and is used for collecting the audio signals output by the earlier-opened loudspeaker.
8. The adaptive control system of claim 6, further comprising:
and the sound field sidelobe suppressor is used for adjusting the time domain impulse response of the loudspeaker which is started later and suppressing sidelobes of a sound field formed by the loudspeaker which is started earlier.
9. A storage medium, comprising: a memory, characterized in that the memory has stored therein computer instructions, which are loaded by the memory and which perform the steps of the method for adaptive control of a loudspeaker array according to any of the claims 1-5.
10. A terminal, comprising: a processor performing the steps of the method of adaptive control of a loudspeaker array according to any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310645962.1A CN116582803B (en) | 2023-06-01 | 2023-06-01 | Self-adaptive control method, system, storage medium and terminal for loudspeaker array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310645962.1A CN116582803B (en) | 2023-06-01 | 2023-06-01 | Self-adaptive control method, system, storage medium and terminal for loudspeaker array |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116582803A true CN116582803A (en) | 2023-08-11 |
| CN116582803B CN116582803B (en) | 2023-10-20 |
Family
ID=87535762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310645962.1A Active CN116582803B (en) | 2023-06-01 | 2023-06-01 | Self-adaptive control method, system, storage medium and terminal for loudspeaker array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116582803B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117319902A (en) * | 2023-11-28 | 2023-12-29 | 广州市声讯电子科技股份有限公司 | Control method and control system for multi-scene loudspeaker array |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100142733A1 (en) * | 2008-12-10 | 2010-06-10 | Choi Jung-Woo | Apparatus and Method for Generating Directional Sound |
| CN201557235U (en) * | 2009-11-20 | 2010-08-18 | 广州市迪士普音响科技有限公司 | Column loudspeaker with function of sound wave side lobe suppression |
| CN102611962A (en) * | 2012-02-09 | 2012-07-25 | 苏州上声电子有限公司 | Airspace response balance and sound field control method and device of microphone array based on wireless communication network |
| CN103385009A (en) * | 2011-12-27 | 2013-11-06 | 松下电器产业株式会社 | Sound field control device and sound field control method |
| WO2014012945A1 (en) * | 2012-07-16 | 2014-01-23 | Thomson Licensing | Method and device for rendering an audio soundfield representation for audio playback |
| US20150208188A1 (en) * | 2014-01-20 | 2015-07-23 | Sony Corporation | Distributed wireless speaker system with automatic configuration determination when new speakers are added |
| CN105100330A (en) * | 2015-08-26 | 2015-11-25 | 广东欧珀移动通信有限公司 | Method and mobile terminal for optimizing equipment sound effect |
| CN108694957A (en) * | 2018-04-08 | 2018-10-23 | 湖北工业大学 | The echo cancelltion design method formed based on circular microphone array beams |
| CN109417668A (en) * | 2016-07-05 | 2019-03-01 | 索尼公司 | Sound field forms device and method and program |
| CN110769352A (en) * | 2018-07-25 | 2020-02-07 | 西安中兴新软件有限责任公司 | Signal processing method and device and computer storage medium |
| CN110933559A (en) * | 2019-11-28 | 2020-03-27 | 深圳创维－Rgb电子有限公司 | Intelligent sound box sound effect self-adaptive adjusting method and system and storage medium |
| CN113747306A (en) * | 2021-08-26 | 2021-12-03 | 宁波东源音响器材有限公司 | Sound field control method of loudspeaker array |
-
2023
- 2023-06-01 CN CN202310645962.1A patent/CN116582803B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100142733A1 (en) * | 2008-12-10 | 2010-06-10 | Choi Jung-Woo | Apparatus and Method for Generating Directional Sound |
| CN201557235U (en) * | 2009-11-20 | 2010-08-18 | 广州市迪士普音响科技有限公司 | Column loudspeaker with function of sound wave side lobe suppression |
| CN103385009A (en) * | 2011-12-27 | 2013-11-06 | 松下电器产业株式会社 | Sound field control device and sound field control method |
| CN102611962A (en) * | 2012-02-09 | 2012-07-25 | 苏州上声电子有限公司 | Airspace response balance and sound field control method and device of microphone array based on wireless communication network |
| WO2014012945A1 (en) * | 2012-07-16 | 2014-01-23 | Thomson Licensing | Method and device for rendering an audio soundfield representation for audio playback |
| US20150208188A1 (en) * | 2014-01-20 | 2015-07-23 | Sony Corporation | Distributed wireless speaker system with automatic configuration determination when new speakers are added |
| CN105100330A (en) * | 2015-08-26 | 2015-11-25 | 广东欧珀移动通信有限公司 | Method and mobile terminal for optimizing equipment sound effect |
| CN109417668A (en) * | 2016-07-05 | 2019-03-01 | 索尼公司 | Sound field forms device and method and program |
| CN108694957A (en) * | 2018-04-08 | 2018-10-23 | 湖北工业大学 | The echo cancelltion design method formed based on circular microphone array beams |
| CN110769352A (en) * | 2018-07-25 | 2020-02-07 | 西安中兴新软件有限责任公司 | Signal processing method and device and computer storage medium |
| CN110933559A (en) * | 2019-11-28 | 2020-03-27 | 深圳创维－Rgb电子有限公司 | Intelligent sound box sound effect self-adaptive adjusting method and system and storage medium |
| CN113747306A (en) * | 2021-08-26 | 2021-12-03 | 宁波东源音响器材有限公司 | Sound field control method of loudspeaker array |
Non-Patent Citations (3)
| Title |
|---|
| B.G.NAGARAJA ET AL: "Efficient window for monolingual and crosslingual speaker identification using MFCC", 《2013 INTERNATIONAL CONFERENCE ON ADVANCED COMPUTING AND COMMUNICATION》 * |
| 彭妙颜 等: "相控阵扬声器系统", 《科技成果》 * |
| 李婷婷 等: "一种新型的参量阵扬声器阵列设计与优化", 《压电与声光》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117319902A (en) * | 2023-11-28 | 2023-12-29 | 广州市声讯电子科技股份有限公司 | Control method and control system for multi-scene loudspeaker array |
| CN117319902B (en) * | 2023-11-28 | 2024-03-12 | 广州市声讯电子科技股份有限公司 | Control method and control system for multi-scene loudspeaker array |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116582803B (en) | 2023-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1919251B1 (en) | Beamforming weights conditioning for efficient implementations of broadband beamformers | |
| EP3343559B1 (en) | De-reverberation control method and device thereof | |
| JP6196320B2 (en) | Filter and method for infomed spatial filtering using multiple instantaneous arrival direction estimates | |
| CN110191396B (en) | Audio processing method, device, terminal and computer readable storage medium | |
| CN116582803B (en) | Self-adaptive control method, system, storage medium and terminal for loudspeaker array | |
| EP3430823A1 (en) | Sound reproduction system | |
| WO2020180964A1 (en) | Placement of multiple feedforward microphones in an active noise reduction (anr) system | |
| US10665220B1 (en) | Active noise reduction (ANR) system with multiple feedforward microphones and multiple controllers | |
| CN111445917A (en) | Echo cancellation method, device and computer storage medium | |
| Seydnejad et al. | Broadband beamforming using Laguerre filters | |
| CN107682802B (en) | Method and device for debugging sound effect of audio equipment | |
| EP3661178A1 (en) | Method for playing sound and multi-screen terminal | |
| CN113170255A (en) | Compensation for binaural loudspeaker directivity | |
| JP4256631B2 (en) | Auto gain control device | |
| CN112399302B (en) | Audio playing method and device of wearable audio playing device | |
| CN114071220B (en) | Sound effect adjusting method and device, storage medium and electronic equipment | |
| CN110492869A (en) | A kind of improved segmentation area block LMS adaptive filter algorithm | |
| CN117376781A (en) | Audio device and method of operating an audio device | |
| CN115835094A (en) | Audio signal processing method, system, device, product and medium | |
| CN112397079A (en) | Filter, adaptive filtering method thereof and computer readable storage medium | |
| CN111787458A (en) | Audio signal processing method and electronic equipment | |
| JP3064685B2 (en) | Microphone device | |
| CN109921715A (en) | A kind of control method, device and the system of birotor fan | |
| WO2024016793A1 (en) | Voice signal processing method and apparatus, device, and computer readable storage medium | |
| CN220043611U (en) | Miniature directive property recording device and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |