CN208112924U - A kind of audio transmission system - Google Patents
A kind of audio transmission system Download PDFInfo
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- CN208112924U CN208112924U CN201820591110.3U CN201820591110U CN208112924U CN 208112924 U CN208112924 U CN 208112924U CN 201820591110 U CN201820591110 U CN 201820591110U CN 208112924 U CN208112924 U CN 208112924U
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Abstract
The utility model relates to a kind of audio transmission systems, receiving module including transmitting module and with transmitting module wireless communication connection, transmitting module includes data acquisition circuit and the first main control chip, data acquisition circuit, first main control chip is for receiving control signal and audio signal that the data acquisition circuit is collected and transmitted, and signal and audio signal separation will be controlled, and the wireless control signal form that the control signal of separation is converted into 2.4GHz frequency range is sent to receiving module, the wireless digital audio signal form that isolated audio signal is converted into 5.8GHz frequency range is sent to receiving module；Receiving module includes that can receive and handle control signal and audio signal, and audio signal is played using playback equipment.The audio transmission system will control signal and audio signal is separated and be respectively adopted 2.4GHz frequency range and 5.8GHz frequency range is transmitted, so that will not interfere with each other between them.
Description
Technical field
The utility model relates to audio transmission systems.
Background technique
It is limited to abandon distance caused by using wired connection, line complexity, the various disadvantages such as inconvenient for use, existing skill
Voice communication in art uses wireless telecommunications more and more.Such as the Chinese invention of Publication No. CN107295444A《It is based on
The wireless audio transmission system of ZigBee》A kind of wireless audio transmission system based on ZigBee is disclosed, including audio is adopted
Collect unit, using the audio sensor being made of microphone, audio collection circuit, for acquiring audio data；Audio transmission list
Member, using CC2530 chip, 8051CPU for being carried by CC2530 by the collected audio data of audio collection unit into
Row analog-to-digital conversion converts analog signals into the digital signal that machine can identify, by software section to collected audio number
After carrying out coding compression, data are wirelessly sent to audio playing unit using the wireless transceiver of CC2530；Audio plays
Unit, for receiving the data to come by CC2530 transmitter wireless transmission, and after carrying out denoising by filter circuit,
It is connected on loudspeaker after being amplified again by amplifying circuit, realizes the broadcasting of audio；Power supply unit, for being adopted to audio
Collection, transmission and playing module provide voltage output, and guarantee each module has stable voltage supply.
But this kind of above-mentioned ZigBee wireless communication technique and existing frequently-used audio communication technologies are usually adopted
It is communicated with 2.4GHz frequency range.But there is the problems such as interference is big, real-time is poor in the frequency range.With mentioning for people's living standard
Height, for wireless audio communication, more stringent requirements are proposed, it is desirable to provide a kind of real-time is good, the audio transmission system that interferes less
System.
Utility model content
Technical problem to be solved in the utility model is that provide a kind of real-time good for the status of the prior art, few dry
The audio transmission system disturbed.
The utility model solves technical solution used by above-mentioned technical problem：A kind of audio transmission system, including hair
Module and the receiving module with transmitting module wireless communication connection are penetrated,
The transmitting module includes data acquisition circuit and the first main control chip, the data acquisition circuit, for acquiring
Control signal and audio signal are simultaneously sent to first main control chip；First main control chip, for receiving the data
The control signal and the audio signal that Acquisition Circuit issues, and the control signal and the audio signal are separated,
And the wireless control signal form that the control signal of separation is converted into 2.4GHz frequency range is sent to the receiving module, it will
The wireless digital audio signal form that the audio signal of separation is converted into 5.8GHz frequency range is sent to the receiving module；
The receiving module includes the second main control chip, pcm encoder circuit, audio power amplifier circuit and playback equipment,
Second main control chip, the audio letter of the wireless digital audio signal form for receiving 5.8GHz frequency range
Number, and send the audio signal of digital audio and video signals form to the pcm encoder circuit, it is also used to receive 2.4GHz
The control signal of the wireless control signal form of frequency range, and send the control signal to playback equipment；
The pcm encoder circuit is believed for receiving the audio signal of digital audio and video signals form, and by the audio
Number being converted into analog audio signal form from digital audio and video signals form is then forwarded to the audio power amplifier circuit；
The audio power amplifier circuit, for receiving the audio signal of analog audio signal form and being transferred to described broadcast
Put equipment；
The playback equipment is received for receiving the control signal and by the control and playing of the control signal
The audio signal of analog audio signal form.
Further, the transmitting module further includes digital audio processing circuit, for receiving first main control chip point
The audio signal from after, and first main control chip is then forwarded to after the audio signal is carried out noise reduction process.
Preferably, the first main control chip model BK5866.This kind of chip is more suitable for this system use, and performance is good
It is good,
Preferably, the transmitting module and the receiving module are communicated to connect by wifi.Wifi communication mode is selected to pass
Transmission quality is good.
Preferably, the playback equipment is loudspeaker.Select loudspeaker result of broadcast good.
Compared with prior art, the utility model has the advantage of：Control signal and audio signal are used into different frequencies
Duan Jinhang wireless transmission, so that will not be interfered with each other between them；In addition, converting audio signals into the number of 5.8GHz frequency range
Audio signal form is transmitted, and 5.8GHz frequency range is ISM frequency range one higher than 2.4GHZ frequency, open, it is deferred to
In worlds such as 802.11a, FCC Part 15, ETSI EN 301489, ETSI EN 301893, EN 50385, EN 60950
Standard, only part wireless mouse, wireless router and digital cordless phone use at present, the interference of 5.8GHz frequency range in environment
Signal is few, thus, it is interfered less using the audio signal of 5.8GHz band transmissions, real-time is good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.
As shown in Figure 1, the utility model embodiment provides a kind of a kind of audio transmission system of audio transmission system, including
Transmitting module and the receiving module connected with transmitting module wireless communication.The transmitting module of the present embodiment passes through with receiving module
Wifi communication connection.
Transmitting module includes data acquisition circuit and the first main control chip.Wherein, data acquisition circuit is used for acquisition control
Signal and audio signal are simultaneously sent to the first main control chip.First main control chip, the control that Acquisition Circuit issues for receiving data
Signal processed and audio signal, and signal and audio signal separation will be controlled, and isolated control signal is converted into 2.4GHz frequency
The wireless control signal form of section is sent to receiving module, and isolated audio signal is converted into the wireless digital of 5.8GHz frequency range
Audio signal form is sent to receiving module.Transmitting module further includes digital audio processing circuit, for receiving the first master control core
Audio signal after piece separation, and the first main control chip is then forwarded to after audio signal is carried out noise reduction process.The of this implementation
One main control chip model BK5866.
Receiving module includes the second main control chip, pcm encoder circuit, audio power amplifier circuit and playback equipment.Second master control
Chip is used to receive the audio signal of the wireless digital audio signal form of 5.8GHz frequency range, and by digital audio and video signals form
Audio signal sends pcm encoder circuit to, is also used to receive the control signal of the wireless control signal form of 2.4GHz frequency range, and
Send control signal to playback equipment.Pcm encoder circuit is used to receive the audio signal of digital audio and video signals form, and by sound
Frequency signal is converted into analog audio signal form from digital audio and video signals form and is then forwarded to audio power amplifier circuit.Audio frequency power amplifier electricity
Road is used to receive the audio signal of analog audio signal form and is transferred to playback equipment.Playback equipment is for receiving control signal
And the control of suspension control signal and play the audio signal of the analog audio signal form received.The playback equipment of this implementation is
Loudspeaker.
Claims (5)
1. a kind of audio transmission system, the receiving module including transmitting module and with transmitting module wireless communication connection,
It is characterized in that：
The transmitting module includes data acquisition circuit and the first main control chip,
The data acquisition circuit for acquisition control signal and audio signal and is sent to first main control chip；
First main control chip, for receiving the control signal and audio letter that the data acquisition circuit issues
Number, and the control signal and the audio signal are separated, and the control signal of separation is converted into 2.4GHz frequency range
Wireless control signal form be sent to the receiving module, the audio signal of separation is converted into the nothing of 5.8GHz frequency range
Line digital audio signal form is sent to the receiving module；
The receiving module includes the second main control chip, pcm encoder circuit, audio power amplifier circuit and playback equipment,
Second main control chip, the audio signal of the wireless digital audio signal form for receiving 5.8GHz frequency range,
And send the audio signal of digital audio and video signals form to the pcm encoder circuit, it is also used to receive 2.4GHz frequency range
Wireless control signal form the control signal, and send the control signal to playback equipment；
The pcm encoder circuit, for receiving the audio signal of digital audio and video signals form, and by the audio signal from
Digital audio and video signals form is converted into analog audio signal form and is then forwarded to the audio power amplifier circuit；
The audio power amplifier circuit is set for receiving the audio signal of analog audio signal form and being transferred to the broadcasting
It is standby；
The playback equipment, for receiving the control signal and being played the simulation received by the control of the control signal
The audio signal of audio signal form.
2. audio transmission system according to claim 1, it is characterised in that：The transmitting module further includes at digital audio
Circuit is managed, carries out noise reduction for receiving the audio signal after first main control chip separates, and by the audio signal
First main control chip is then forwarded to after processing.
3. audio transmission system according to claim 1, it is characterised in that：The first main control chip model
BK5866。
4. according to claim 1 to audio transmission system described in 3 any claims, it is characterised in that：The transmitting module
It is communicated to connect with the receiving module by wifi.
5. according to claim 1 to audio transmission system described in 3 any claims, it is characterised in that：The playback equipment
For loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820591110.3U CN208112924U (en) | 2018-04-24 | 2018-04-24 | A kind of audio transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820591110.3U CN208112924U (en) | 2018-04-24 | 2018-04-24 | A kind of audio transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208112924U true CN208112924U (en) | 2018-11-16 |
Family
ID=64115599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820591110.3U Active CN208112924U (en) | 2018-04-24 | 2018-04-24 | A kind of audio transmission system |
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| Country | Link |
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| CN (1) | CN208112924U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599142A (en) * | 2020-12-14 | 2021-04-02 | 北京百瑞互联技术有限公司 | Bluetooth transmission method, equipment and storage medium for adjusting background sound and human voice |
| CN113556144A (en) * | 2021-06-18 | 2021-10-26 | 珠海惠威科技有限公司 | Wireless audio transmission system |
| US11259164B2 (en) | 2020-02-27 | 2022-02-22 | Shure Acquisition Holdings, Inc. | Low overhead control channel for wireless audio systems |
| CN115276707A (en) * | 2022-07-27 | 2022-11-01 | 深圳市中诺无线科技有限公司 | 2.4G wireless digital audio transmission circuit |
-
2018
- 2018-04-24 CN CN201820591110.3U patent/CN208112924U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11259164B2 (en) | 2020-02-27 | 2022-02-22 | Shure Acquisition Holdings, Inc. | Low overhead control channel for wireless audio systems |
| US11895569B2 (en) | 2020-02-27 | 2024-02-06 | Shure Acquisition Holdings, Inc. | Low overhead control channel for wireless audio systems |
| CN112599142A (en) * | 2020-12-14 | 2021-04-02 | 北京百瑞互联技术有限公司 | Bluetooth transmission method, equipment and storage medium for adjusting background sound and human voice |
| CN112599142B (en) * | 2020-12-14 | 2024-04-09 | 北京百瑞互联技术股份有限公司 | Bluetooth transmission method, device and storage medium for adjusting background sound and human voice |
| CN113556144A (en) * | 2021-06-18 | 2021-10-26 | 珠海惠威科技有限公司 | Wireless audio transmission system |
| CN113556144B (en) * | 2021-06-18 | 2022-06-28 | 珠海惠威科技有限公司 | Wireless audio transmission system |
| CN115276707A (en) * | 2022-07-27 | 2022-11-01 | 深圳市中诺无线科技有限公司 | 2.4G wireless digital audio transmission circuit |
| CN115276707B (en) * | 2022-07-27 | 2023-11-24 | 深圳市中诺无线科技有限公司 | 2.4G wireless digital audio transmission circuit |
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