CN219834335U

CN219834335U - Bluetooth sound system

Info

Publication number: CN219834335U
Application number: CN202321301541.9U
Authority: CN
Inventors: 李东航
Original assignee: Guangdong Nuen Intelligent Technology Co ltd
Current assignee: Guangdong Nuen Intelligent Technology Co ltd
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2023-10-13
Anticipated expiration: 2033-05-26

Abstract

The embodiment of the utility model provides a Bluetooth sound system, and belongs to the technical field of audio. The Bluetooth sound system comprises first sound equipment and second sound equipment, wherein the first sound equipment and the second sound equipment are connected through Bluetooth, and the first sound equipment and the second sound equipment are arranged at intervals; under the condition that the first sound equipment is connected with a playing source, the first sound equipment divides an audio signal sent by the playing source into a first audio signal and a second audio signal, the first sound equipment plays the first audio signal, and the first sound equipment sends the second audio signal to the second sound equipment to be played through the second sound equipment. The Bluetooth sound system provided by the utility model can improve the stereo effect of audio playing.

Description

Bluetooth sound system

Technical Field

The utility model relates to the technical field of audio, in particular to a Bluetooth sound system.

Background

In the prior art, bluetooth sound in the market can only work on a single machine, and can not support multichannel wireless and bluetooth playing at the same time, but the indoor area of an audio-visual education room, a multimedia classroom, a lecture room and the like for teaching is large, and the effect of full coverage of sound can not be achieved due to the power limitation of equipment, so that the limitation of use and functions is caused.

Disclosure of Invention

The embodiment of the utility model provides a Bluetooth sound system, which can solve the problems of low coverage and poor sound effect caused by the single work of a Bluetooth sound in the prior art.

In a first aspect of an embodiment of the present utility model, there is provided a bluetooth sound system, including:

the first sound equipment and the second sound equipment are connected through Bluetooth, and the first sound equipment and the second sound equipment are arranged at intervals;

under the condition that the first sound equipment is connected with a playing source, the first sound equipment divides an audio signal sent by the playing source into a first audio signal and a second audio signal, the first sound equipment plays the first audio signal, and the first sound equipment sends the second audio signal to the second sound equipment to be played through the second sound equipment.

Optionally, an audio codec is provided in the first audio device, and the first audio device divides the audio signal sent by the playing source into the first audio signal and the second audio signal through the audio codec.

Optionally, a digital signal processor is disposed in the first audio device, and the digital signal processor is configured to determine types of the first audio signal and the second audio signal according to a distance between the first audio device and the second audio device.

Optionally, when the distance between the first audio device and the second audio device is smaller than a preset value, the first audio signal is a left channel signal, and the second audio signal is a right channel signal;

and under the condition that the distance between the first sound equipment and the second sound equipment is larger than the preset value, the first audio signal and the second audio signal are the same audio signal.

Optionally, the first audio device includes a first bluetooth module and a second bluetooth module, the first bluetooth module is connected with the playing source, and the second bluetooth module is connected with the second audio device.

Optionally, the transmission distance of the second bluetooth module is greater than the transmission distance of the first bluetooth module.

Optionally, the first audio device includes a WiFi module and a bluetooth module, the WiFi module is connected with the playing source, and the bluetooth module is connected with the second audio device.

Optionally, the first audio device and the second audio device are each provided with an equalizer.

Optionally, the playing source is a mobile phone or a computer.

Optionally, the playing source is connected with the first audio device through a data line, and the playing source sends the audio signal to the first audio device through the data line.

The Bluetooth sound system provided by the embodiment of the utility model comprises two sound devices, wherein one sound device is connected with a playing source, acquires an audio signal of the playing source, divides the audio signal into two paths of audio signals, sends one path of audio signal to the other sound device, and then plays the two paths of audio signals respectively through the two sound devices; because two sound equipment are connected through bluetooth, can set up two stereo sets in the different positions in the space, so broadcast two way signals of same audio signal through the stereo set of different positions, both can improve the coverage of sound, can realize stereophonic effect again.

Drawings

Fig. 1 is a schematic structural diagram of a bluetooth sound system according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a bluetooth sound system according to an embodiment of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

It should be understood that, in various embodiments of the present utility model, the sequence number of each process does not mean that the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present utility model.

It should be understood that in the present utility model, "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that in the present utility model, "plurality" means two or more. "and/or" is merely an association relationship describing an association object, and means that three relationships may exist, for example, and/or B may mean: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. "comprising A, B and C", "comprising A, B, C" means that all three of A, B, C comprise, "comprising A, B or C" means that one of the three comprises A, B, C, and "comprising A, B and/or C" means that any 1 or any 2 or 3 of the three comprises A, B, C.

It should be understood that in the present utility model, "B corresponding to a", "a corresponding to B", or "B corresponding to a" means that B is associated with a, from which B can be determined. Determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information. The matching of A and B is that the similarity of A and B is larger than or equal to a preset threshold value. As used herein, "if" may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to detection" depending on the context.

The technical scheme of the utility model is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

Fig. 1 schematically illustrates a structural diagram of a bluetooth sound system according to an embodiment of the present utility model, where, as shown in fig. 1, the bluetooth sound system includes a first sound device 101 and a second sound device 102, where the first sound device 101 and the second sound device 102 are connected by bluetooth, and the first sound device 101 and the second sound device 102 are disposed at intervals;

wherein, in the case where the first acoustic device 101 and the play source are connected, the first acoustic device 101 divides the audio signal transmitted by the play source into a first audio signal and a second audio signal, the first acoustic device 101 plays the first audio signal, and the first acoustic device 101 transmits the second audio signal to the second acoustic device 102 to be played by the second acoustic device 102.

In the prior art, bluetooth can only be connected with one device, so that audio can be connected and played only through one sound and a mobile phone or a computer, and under the condition of lower sound power, the coverage range of sound is limited, and a region with lower sound exists. For example, when the indoor area of the audio-visual education room, the multimedia classroom, the lecture room etc. for teaching is bigger, there is the sound blind area, influences the teaching effect.

In this case, the bluetooth sound system provided by the present utility model may include two or more sound devices. Based on bluetooth 2.4G transmission, two audio devices are started simultaneously, and when the wireless serial function is turned on, the audio that is turned on first serves as a first audio device 101, i.e., an active audio, and the other audio is a second audio device 102, serving as an impulse audio. At this time, the active sound equipment can process the audio signal sent by the playing source into the audio signals of two channels, wherein the audio signal of one channel is directly played through the active sound equipment, and the audio signal of the other channel is sent to the driven sound equipment for playing. Therefore, the active sound and the impulse sound can be placed at different positions, so that the whole coverage of sound in space can be realized, and the stereophonic effect can also be realized.

In general, in a binaural system, a stereo effect can be achieved by dividing left and right channels. The left and right channels of an audio signal are distinguished by the difference in arrival time of the sound between the ears and the difference in intensity of the sound between the ears. The time difference is caused by the distance, when the sound is transmitted from the front, the distances are equal, so that the time difference is not generated, but the time for reaching the right ear is about thirty microseconds less than that of the left ear if the sound is three degrees to the right, and the sound source is distinguished by the thirty microseconds. The intensity difference is caused by the attenuation of the signal, which occurs naturally due to distance or by the occlusion of the human head, which attenuates the sound, so that the intensity of the sound heard by the ear near the sound source is greater than that of the other ear.

In the embodiment of the present utility model, an audio codec may be provided in the first audio apparatus 101, and the first audio apparatus 101 divides an audio signal transmitted from a play source into a first audio signal and a second audio signal through the audio codec. The first audio signal and the second audio signal are respectively different channel signals. For example, the first audio signal is a left channel audio signal and the second audio signal is a right channel audio signal; or the first audio signal is a right channel audio signal and the second audio signal is a left channel audio signal.

Optionally, a digital signal processor is provided in the first audio device 101, the digital signal processor being configured to determine the type of the first audio signal and the second audio signal based on the distance between the first audio device 101 and the second audio device 102.

The digital signal processor (Digital Signal Processor, DSP) is a processor composed of large-scale or very large-scale integrated circuit chips for performing digital signal processing tasks. Digital signal processing is a theory and technique that digitally represents and processes signals. Digital signal processing and analog signal processing are subsets of signal processing. The purpose of digital signal processing is to measure or filter real world continuous analog signals. It is therefore necessary to convert the signal from the analog domain to the digital domain before digital signal processing takes place, which is typically achieved by means of an analog-to-digital converter. The output of digital signal processing is often also converted to the analog domain, which is achieved by digital-to-analog converters.

In the embodiment of the utility model, the stereo effect can be adjusted by using the DSP. The DSP may adjust the stereo effect according to the distance, for example by the first audio device 101 emitting the left channel and the second audio device 102 emitting the right channel. The maximum attainable effective distance between the first audio device 101 and the second audio device 102 is determined according to the distance that bluetooth can transmit, for example, for bluetooth 2.4G, the effective distance between the two may be 30m. That is, the second acoustic device 102 can be set in a range of 30m in radius around the first acoustic device 101, so that the coverage of sound can be greatly expanded. When the Bluetooth sound system provided by the embodiment of the utility model is placed in a classroom, a multimedia classroom or a studio environment, sound can be covered in all directions, and a stereo effect can be generated.

Optionally, in the case that the distance between the first audio device 101 and the second audio device 102 is smaller than a preset value, the first audio signal is a left channel signal, and the second audio signal is a right channel signal; in the case where the distance between the first audio apparatus 101 and the second audio apparatus 102 is greater than the preset value, the first audio signal and the second audio signal are the same audio signal.

It can be understood that, in the case that the distance between the first audio device 101 and the second audio device 102 is smaller than the preset value, it indicates that a stereo effect needs to be achieved at this time, so that different channel signals, such as a left channel signal being an accompaniment sound and a right channel signal being a human voice signal, are played by the first audio device 101 and the second audio device 102 respectively, so that a better hearing experience can be obtained for a listener.

In the case where the distance between the first acoustic device 101 and the second acoustic device 102 is smaller than the preset value, it is indicated that a larger sound coverage area needs to be achieved by both acoustic devices at this time. Therefore, the first audio signal and the second audio signal can be set to the same audio signal, so that the second audio device 102 can supplement and strengthen the sound coverage blind area of the first audio device 101, thereby improving the sound playing coverage area.

Optionally, the playing source is a mobile phone or a computer. The playing source is an electronic device, such as a mobile phone, a tablet computer, a television device, etc., that can play audio or video.

In an alternative embodiment, the first audio device 101 includes a first bluetooth module and a second bluetooth module, the first bluetooth module being connected to the playback source, the second bluetooth module being connected to the second audio device 102. That is, the first audio device 101 is connected to the playing source and the second audio device 102 through two different bluetooth modules, respectively, so that signals can be implemented without interference.

Optionally, the transmission distance of the second bluetooth module is greater than the transmission distance of the first bluetooth module. Generally, the distance between the playing source and the first audio device 101 is small, for example, in a teaching environment, the playing source and the first audio device 101 are both disposed near a podium, and the second audio device may be disposed behind a classroom or at a corner to improve the coverage of sound, so that the transmission distance of the second bluetooth module is required to be longer than that of the first bluetooth module. The transmission distance of the first Bluetooth module is set smaller, so that the cost can be reduced, and the power consumption can be saved.

In addition, the first audio device 101 further includes a WiFi module and a bluetooth module, the WiFi module is connected with the playing source, and the bluetooth module is connected with the second audio device 102. That is, the first audio device 101 is connected to the playback source and the second audio device 102 via different wireless communication modules. For example, the first audio device 101 and the computer or the mobile phone playing the audio are located in the same wireless local area network, and transmit the audio signal through the wireless local area network, and when receiving the audio signal sent by the computer or the mobile phone playing the audio, the audio signal is divided into two channels, wherein one channel signal is sent to the second audio device 102 through the bluetooth module and played through the second audio device 102.

Alternatively, the playback source and the first acoustic device 101 are connected by a data line, and the playback source transmits an audio signal to the first acoustic device 101 by the data line. In the common scene of teaching, the broadcast source is the computer equipment of setting on the podium, and first stereo set 101 also sets up on the podium, and first stereo set 101 and computer equipment are directly connected through the data line, so both can guarantee data transmission rate also can guarantee audio signal's transmission quality, and broadcast source computer equipment can also supply power for first stereo set 101 through the data line, so need not to set up battery or external power cord for first stereo set 101 additionally, has simplified bluetooth stereo set's structure.

Optionally, the first audio device 101 and the second audio device 102 are each provided with an equalizer. The equalizer can respectively adjust the amplification of the electric signals with various frequency components, and compensates the defects of the loudspeaker and the sound field by adjusting the electric signals with various different frequencies, compensates and modifies various sound sources and other special functions. The first audio device 101 and the second audio device 102 are both provided with an equalizer, so that the playing quality can be improved, and the hearing experience is further improved.

As shown in fig. 2, in the case of starting the serial signal mode, the first audio device 101 is connected to the playing source, the first audio device 101 divides the audio signal sent by the playing source into a first audio signal and a second audio signal, the first audio device 101 plays the first audio signal, and the first audio device 101 sends the second audio signal to the second audio device 102 to be played by the second audio device 102. AMP in the figure means an amplifier, and AMP further includes PREAMP (front stage) and powerramp (rear stage), and only a speaker in sound plays audio through the speaker.

The Bluetooth sound system provided by the embodiment of the utility model comprises two sound devices, wherein one sound device is connected with a playing source, acquires an audio signal of the playing source, divides the audio signal into two paths of audio signals, sends one path of audio signal to the other sound device, and then plays the two paths of audio signals respectively through the two sound devices; because the two sound equipment are connected through Bluetooth, the two sound equipment can be arranged at different positions in space, and thus, two paths of signals of the same audio signal are played through the sound equipment at different positions. When the distance between the two sound boxes is smaller, the two sound boxes can respectively play the left sound channel and the right sound channel, so that the effect of stereo can be realized; when the distance between the two sounds is larger, the two sounds are enabled to play the same audio signals, so that the second sound can be used as the supplement of the first sound, and the coverage of sound playing can be improved.

It should be noted that all features disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature claimed is one example only of a generic set of equivalent or similar features. Where used, further, preferably, still further and preferably, the brief description of the other embodiment is provided on the basis of the foregoing embodiment, and further, preferably, further or more preferably, the combination of the contents of the rear band with the foregoing embodiment is provided as a complete construct of the other embodiment. A further embodiment is composed of several further, preferably, still further or preferably arrangements of the strips after the same embodiment, which may be combined arbitrarily.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model 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 or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. A bluetooth sound system, comprising:

2. A bluetooth sound system according to claim 1, wherein: the first audio equipment is provided with an audio coder and decoder, and divides the audio signal sent by the playing source into the first audio signal and the second audio signal through the audio coder and decoder.

3. A bluetooth sound system according to claim 1, wherein: the first audio equipment is provided with a digital signal processor, and the digital signal processor is used for determining the types of the first audio signal and the second audio signal according to the distance between the first audio equipment and the second audio equipment.

4. A bluetooth sound system according to claim 3, wherein:

when the distance between the first sound equipment and the second sound equipment is smaller than a preset value, the first audio signal is a left channel signal, and the second audio signal is a right channel signal;

5. A bluetooth sound system according to claim 1, wherein: the first sound equipment comprises a first Bluetooth module and a second Bluetooth module, the first Bluetooth module is connected with the playing source, and the second Bluetooth module is connected with the second sound equipment.

6. A bluetooth sound system according to claim 5, wherein: the transmission distance of the second Bluetooth module is greater than that of the first Bluetooth module.

7. A bluetooth sound system according to claim 1, wherein: the first sound equipment comprises a WiFi module and a Bluetooth module, the WiFi module is connected with the playing source, and the Bluetooth module is connected with the second sound equipment.

8. A bluetooth sound system according to claim 1, wherein: the first sound equipment and the second sound equipment are both provided with an equalizer.

9. A bluetooth sound system according to claim 1, wherein: the playing source is a mobile phone or a computer.

10. A bluetooth sound system according to claim 1, wherein: the playing source is connected with the first sound equipment through a data line, and the playing source sends the audio signal to the first sound equipment through the data line.