CN111246346B - Wireless multi-audio acquisition interoperation system - Google Patents
Wireless multi-audio acquisition interoperation system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72406—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by software upgrading or downloading
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
- H04M1/72412—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories using two-way short-range wireless interfaces
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72442—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality for playing music files
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Abstract
The invention relates to the technical field of audio, and discloses a wireless multi-audio acquisition interoperation system, which comprises intelligent terminal equipment and at least one embedded equipment, wherein the embedded equipment comprises a Bluetooth connecting unit, a low-delay wireless audio module, an audio acquisition unit, a digital-to-analog converter, an analog-to-digital converter, an audio processing unit, an A2DP decoder and an audio encoder, and a plurality of channels are adopted between the Bluetooth module of the intelligent terminal equipment and the Bluetooth connecting unit of the embedded equipment for uplink and downlink transmission of audio signals; the Bluetooth module of the intelligent terminal device and the Bluetooth connection unit of the embedded device establish Bluetooth pairing based on A2DP connection. The invention can realize that the music stream signal is randomly selected on the operating system of the intelligent terminal equipment and is delivered to any embedded equipment, and the received embedded equipment and the collected sound signal are subjected to signal processing and sound mixing to obtain a stereo sound mixing signal which is automatically broadcasted and shared to other embedded equipment.
Description
Technical Field
The invention relates to the technical field of audio, in particular to a wireless multi-audio acquisition interoperation system.
Background
At present, the bluetooth audio equipment with voice interaction function usually needs to pass through cell-phone APP, and the user can control this equipment. However, because the access protocols of the bluetooth audio devices established by the current voice platforms are not compatible with each other, when the user operates the bluetooth audio devices of a plurality of different access protocols, a plurality of corresponding APPs need to be downloaded and used. Therefore, the operation difficulty of the user is increased, the equipment use experience of the user is influenced, and the excessive APP can cause the shortage of mobile phone resources and bring the poor equipment use experience.
At present, chinese patent application with publication number CN110366157A discloses a bluetooth voice acquisition and interaction method, which relates to a mobile data terminal, a bluetooth audio device, a data distribution module, and a voice platform, where the bluetooth audio device includes a voice acquisition module, the voice platform includes a voice receiving interaction module and a background server, and a user controls an intelligent hand to complete the functions by controlling an APP. The mutual incompatibility between different bluetooth audio equipment has been overcome, and the user need download corresponding APP and be used for controlling, increases the operation degree of difficulty, influences and uses experience scheduling problem.
However, the technical problem in the above technical solutions is that audio transmission between bluetooth audio devices has high latency, and it is not possible to implement functions such as arbitrarily selecting A2DP audio for delivery or broadcast sharing on an operating system of an intelligent terminal device, which affects user experience. Therefore, it is necessary to design and develop a wireless multi-audio acquisition interoperation system.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a wireless multi-audio acquisition interoperation system, which can realize that a music stream signal is randomly selected on an operation system of intelligent terminal equipment and is delivered to any embedded equipment, and after the received embedded equipment and the acquired sound signal are subjected to signal processing and sound mixing, the obtained stereo sound mixing signal is automatically broadcast and shared to other embedded equipment.
The technical purpose of the invention is realized by the following technical scheme:
a wireless multi-audio acquisition interoperation system comprises an intelligent terminal device and at least one embedded device, wherein the embedded device comprises a Bluetooth connecting unit, a low-delay wireless audio module, an audio acquisition unit, a digital-to-analog converter, an analog-to-digital converter, an audio processing unit, an A2DP decoder and an audio encoder, and multiple channels are adopted between the Bluetooth module of the intelligent terminal device and the Bluetooth connecting unit of the embedded device for uplink and downlink transmission of audio signals; a2DP connection is established between a Bluetooth module of intelligent terminal equipment and a Bluetooth connecting unit of embedded equipment, streaming media playing software installed on the intelligent terminal equipment sends music stream signals to the Bluetooth module, the Bluetooth module of the intelligent terminal equipment transmits the A2DP music stream signals to the Bluetooth connecting unit of the embedded equipment through A2DP connection, the A2DP music stream signals are decoded by an A2DP decoder and then sent to an audio processing unit, sound signals acquired by the audio acquisition unit are sent to the audio processing unit after analog-to-digital conversion by an analog-to-digital converter, the audio processing unit is used for carrying out signal processing and audio mixing on the sound signals and the music stream signals, and stereo audio mixing signals obtained after the signal processing and the audio mixing are sent to a low-delay wireless audio module, the digital-to-analog converter and an audio encoder; the stereo audio mixing signal after the digital-to-analog conversion of the digital-to-analog converter is sent to a local loudspeaker unit for playing; the stereo audio mixing signal subjected to stereo coding by the audio coder is sent to the Bluetooth connecting unit of the embedded equipment, and the Bluetooth connecting unit of the embedded equipment transmits the stereo audio mixing signal to the Bluetooth module of the intelligent terminal equipment in an uplink manner; the low-delay wireless audio module of the embedded device broadcasts and shares a stereo audio mixing signal to other embedded devices by adopting a low-delay RF channel, the low-delay wireless audio module of other embedded devices receives the stereo audio mixing signal and sends the stereo audio mixing signal to the audio processing unit, the audio processing unit carries out signal processing on the stereo audio mixing signal and carries out audio mixing with a sound signal collected by an audio collecting unit of the local embedded device, the audio mixing signal obtained after audio mixing is sent to a digital-to-analog converter, and the audio mixing signal after digital-to-analog conversion of the digital-to-analog converter is sent to a local loudspeaker unit for playing.
The invention is further arranged that the sound signal collected by the audio collection unit is a microphone signal, a line in signal or a receiving terminal signal of an external wireless microphone.
The invention is further arranged that the signal processing of the audio processing unit is reverberation, equalization, pitch change, depersonalization, noise reduction, distortion, echo, edging, vibrato, harmony or chorus.
The invention is further arranged that the encoding mode of the audio encoder is stereo encoding, and the frequency band is a full frequency signal with a sampling frequency greater than 16 khz.
The invention is further provided that the sampling frequency is 44.1khz or 48 khz.
The invention is further set up that SWISS connection is established between the Bluetooth module of the intelligent terminal equipment and the Bluetooth connecting unit of the embedded equipment, and the Bluetooth connecting unit of the embedded equipment and the Bluetooth module of the intelligent terminal equipment are connected through SWISS to carry out uplink and downlink transmission of stereo full-frequency audio signals.
The invention is further arranged that the RF channel on which the audio signals are transmitted between the low-delay wireless audio modules of the two embedded devices is a low-delay wireless communication channel of UHF, 1.2G, 2.3G, 2.4G or 5.8G frequency band.
The invention is further configured that the low-delay wireless audio module of the embedded device is a sending end for sending wireless audio signals or a receiving end for receiving wireless audio signals, and the low-delay wireless audio module as the sending end or the receiving end can be automatically set according to user operation configuration or scenes.
The invention is further set that the intelligent terminal equipment is a mobile phone, a tablet computer, a notebook computer, a PC, a network set-top box, a television and an ios, android, linux, windows and mac intelligent system with a Bluetooth module.
The embedded device further comprises a USB interface and a rechargeable battery, wherein the USB interface is connected with a charging end of the rechargeable battery, and the rechargeable battery is used for supplying power to the Bluetooth connecting unit, the low-delay wireless audio module, the audio acquisition unit, the digital-to-analog converter, the analog-to-digital converter, the audio processing unit, the A2DP decoder and the audio encoder.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the invention relates to a Bluetooth module of an intelligent terminal device and a Bluetooth connecting unit of an embedded device, which are connected by A2DP, a stream media playing software sends music stream signals to the Bluetooth module, the Bluetooth module of the intelligent terminal device transmits A2DP music stream signals to the Bluetooth connecting unit of the embedded device through A2DP connection, the A2DP music stream signals are decoded by an A2DP decoder and then sent to an audio processing unit, the sound signals collected by the audio collecting unit are sent to the audio processing unit after analog-to-digital conversion by an analog-to-digital converter, the sound signals collected by the audio collecting unit are microphone signals, line in signals or receiving terminal signals of an external wireless microphone, the audio processing unit processes and mixes the sound of the sound signals and the music stream signals, the signal processing is reverberation, equalization, transposition, human voice or instrument voice elimination, the stereo mixing signals obtained after the signal processing and mixing are sent to the digital-to the analog-to-digital converter, the stereo audio mixing signal after the digital-to-analog conversion of the digital-to-analog converter is sent to a local loudspeaker unit for playing so as to realize the function of ear return or real-time monitoring.
2. The RF channel based on which the audio signals are transmitted between the low-delay wireless audio modules of the two embedded devices is a low-delay wireless communication channel with UHF, 1.2G, 2.3G, 2.4G or 5.8G frequency bands, so that A2DP audio can be arbitrarily selected on an operating system on the intelligent terminal device and delivered to any embedded device, the embedded device receives an A2DP music stream signal, decodes the signal, processes and mixes the decoded signal with the acquired sound signal, the obtained stereo mixed sound signal is automatically broadcasted and shared to a plurality of other embedded devices through the low-delay wireless communication channel, and the embedded device receiving the audio signals and the sound signal acquired by the local audio acquisition unit are played by a local loudspeaker unit after signal processing and mixed sound.
3. The audio processing unit of the embedded device performs signal processing and sound mixing on a sound signal and a music flow signal, a stereo sound mixing signal obtained after the signal processing and the sound mixing is sent to the audio encoder, the stereo sound mixing signal subjected to stereo encoding by the audio encoder is sent to the Bluetooth connecting unit of the embedded device, and the Bluetooth connecting unit of the embedded device transmits the stereo sound mixing signal to the Bluetooth module of the intelligent terminal device in an uplink manner, so that the stereo sound mixing signal is transmitted back to the intelligent terminal device and other intelligent systems.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a schematic block diagram of the system of the present invention.
Reference numerals: 1. an embedded device; 11. a low-delay wireless audio module; 12. an audio acquisition unit; 13. a digital-to-analog converter; 14. an analog-to-digital converter; 15. an audio processing unit; 16. an audio encoder; 17. a Bluetooth connection unit; 18. an A2DP decoder; 2. an intelligent terminal device; 21. a Bluetooth module; 3. a horn unit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the present invention discloses a wireless multi-audio acquisition interoperation system, which includes an intelligent terminal device 2 and at least one embedded device 1, where the embedded device 1 includes a bluetooth connection unit 17, a low-delay wireless audio module 11, an audio acquisition unit 12, a digital-to-analog converter 13, an analog-to-digital converter 14, an audio processing unit 15, an A2DP decoder 18, and an audio encoder 16, and multiple channels are used between a bluetooth module 21 of the intelligent terminal device 2 and the bluetooth connection unit 17 of the embedded device 1 to perform uplink and downlink transmission of audio signals; an A2DP connection is established between a Bluetooth module 21 of an intelligent terminal device 2 and a Bluetooth connection unit 17 of an embedded device 1, a streaming media playing software installed in the intelligent terminal device 2 sends music stream signals to the Bluetooth module 21, the Bluetooth module 21 of the intelligent terminal device 2 transmits A2DP music stream signals to the Bluetooth connection unit 17 of the embedded device 1 in a downlink manner through the A2DP connection, the A2DP music stream signals are decoded by an A2DP decoder 18 and then sent to an audio processing unit 15, sound signals collected by the audio collecting unit 12 are sent to an audio processing unit 15 after being subjected to analog-to-digital conversion by an analog-to-digital converter 14, the audio processing unit 15 is used for performing signal processing and sound mixing on the sound signals and the music stream signals, and stereo sound mixing signals obtained after the signal processing and the sound mixing are sent to a low-delay wireless audio module 11, the digital-to-analog converter 13 and an audio encoder 16; the stereo audio mixing signal after digital-to-analog conversion by the digital-to-analog converter 13 is sent to the local loudspeaker unit 3 for playing; the stereo audio signal subjected to stereo encoding by the audio encoder 16 is sent to the bluetooth connection unit 17 of the embedded device 1, and the bluetooth connection unit 17 of the embedded device 1 transmits the stereo audio signal to the bluetooth module 21 of the intelligent terminal device 2 in an uplink manner; the low-delay wireless audio module 11 of the embedded device 1 broadcasts a shared stereo audio mixing signal to other embedded devices 1 by using a low-delay RF channel, the low-delay wireless audio module 11 of other embedded devices 1 receives the stereo audio mixing signal and sends the stereo audio mixing signal to the audio processing unit 15, the audio processing unit 15 performs signal processing on the stereo audio mixing signal, and performs audio mixing with a sound signal collected by the audio collecting unit 12 of the local embedded device 1, the audio mixing signal obtained after audio mixing is sent to the digital-to-analog converter 13, and the audio mixing signal after digital-to-analog conversion by the digital-to-analog converter 13 is sent to the local speaker unit 3 for playing.
As shown in fig. 2, the sound signal collected by the audio collection unit 12 is a microphone signal, a line in signal, or a receiving terminal signal of an external wireless microphone. The signal processing of the audio processing unit 15 is reverberation, equalization, pitch change, voice canceling, musical instrument sound canceling, noise reduction, distortion, echo, flanger, vibrato, harmony, or chorus. The encoding mode of the audio encoder 16 is stereo encoding, and the frequency band is a full frequency signal with a sampling frequency greater than 16khz, and the common sampling frequency is 44.1khz or 48 khz. The Bluetooth module 21 of the intelligent terminal device 2 is connected with the Bluetooth connecting unit 17 of the embedded device 1 through SWISS, and the Bluetooth connecting unit 17 of the embedded device 1 is connected with the Bluetooth module 21 of the intelligent terminal device 2 through SWISS to perform uplink and downlink transmission of stereo full-frequency audio signals.
The RF channel on which the audio signals are transmitted between the low-delay wireless audio modules 11 of the two embedded devices 1 is a low-delay wireless communication channel in the UHF, 1.2G, 2.3G, 2.4G, or 5.8G frequency band. The low-delay wireless audio module 11 of the embedded device 1 is a transmitting end for transmitting a wireless audio signal or a receiving end for receiving a wireless audio signal, and the low-delay wireless audio module 11 as the transmitting end or the receiving end can be implemented according to user operation configuration or scene automatic setting. The intelligent terminal device 2 is a mobile phone, a tablet computer, a notebook computer, a PC, a network set-top box, a television, an ios, android, linux, windows and mac intelligent system with a Bluetooth module 21. The embedded device 1 further includes a USB interface and a rechargeable battery, the USB interface is connected to a charging terminal of the rechargeable battery, and the rechargeable battery is used to supply power to the bluetooth connection unit 17, the low-delay wireless audio module 11, the audio acquisition unit 12, the digital-to-analog converter 13, the analog-to-digital converter 14, the audio processing unit 15, the A2DP decoder 18, and the audio encoder 16.
The working principle of the embodiment is as follows:
1. the local loudspeaker unit 3 of the embedded device 1 realizes the working principle of ear return or monitoring:
a2DP connection is established between the Bluetooth module 21 of the intelligent terminal device 2 and the Bluetooth connection unit 17 of the embedded device 1, the streaming media playing software sends music stream signals to the Bluetooth module 21, the Bluetooth module 21 of the intelligent terminal device 2 transmits A2DP music stream signals to the Bluetooth connection unit 17 of one embedded device 1 through A2DP connection, the A2DP music stream signals are decoded by an A2DP decoder 18 and then sent to an audio processing unit 15, the sound signals collected by the audio collecting unit 12 are sent to the audio processing unit 15 after being analog-to-digital converted by an analog-to-digital converter 14, the sound signals collected by the audio collecting unit 12 are microphone signals, line in signals or receiving terminal signals of an external wireless microphone, the audio processing unit 15 performs signal processing and sound mixing on the sound signals and the music stream signals, the signal processing is reverberation, equalization, tone variation, human voice elimination or musical instrument elimination, the stereo audio mixing signal obtained after the signal processing and audio mixing is sent to the digital-to-analog converter 13, and the stereo audio mixing signal after the digital-to-analog conversion by the digital-to-analog converter 13 is sent to the local speaker unit 3 for playing, so that the ear return or real-time monitoring function is realized.
2. The working principle of one of the embedded devices 1 broadcasting the shared music to the other embedded devices 1 is as follows:
the stereo audio mixing signal obtained after signal processing and audio mixing by the audio processing unit 15 of one embedded device 1 is sent to the low-delay wireless audio module 11, the low-delay wireless audio module 11 of the embedded device 1 broadcasts a shared stereo audio mixing signal to other embedded devices 1 by adopting a low-delay RF channel, the low-delay wireless audio module 11 of other embedded devices 1 receives the stereo audio mixing signal and sends the stereo audio mixing signal to the audio processing unit 15, the audio processing unit 15 performs signal processing on the stereo audio mixing signal and performs audio mixing with the sound signal acquired by the audio acquisition unit 12 of other embedded devices 1, the audio mixing signal obtained after audio mixing is sent to the digital-to-analog converter 13, and the audio mixing signal after digital-to-analog conversion by the digital converter 13 is sent to the local loudspeaker unit 3 for playing so as to realize playing in other embedded devices 1.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (9)
1. The utility model provides a wireless many audios gather interoperation system, includes intelligent terminal equipment (2), at least two embedded equipment (1), characterized by: the embedded device (1) comprises a Bluetooth connecting unit (17), a low-delay wireless audio module (11), an audio acquisition unit (12), a digital-to-analog converter (13), an analog-to-digital converter (14), an audio processing unit (15), an A2DP decoder (18) and an audio encoder (16), wherein a plurality of channels are adopted between a Bluetooth module (21) of the intelligent terminal device (2) and the Bluetooth connecting unit (17) of the embedded device (1) for uplink and downlink transmission of audio signals; an A2DP connection is established between a Bluetooth module (21) of an intelligent terminal device (2) and a Bluetooth connection unit (17) of an embedded device (1), a streaming media playing software installed in the intelligent terminal device (2) sends music stream signals to the Bluetooth module (21), the Bluetooth module (21) of the intelligent terminal device (2) transmits the A2DP music stream signals to the Bluetooth connection unit (17) of the embedded device (1) in a downlink mode through an A2DP connection, the A2DP music stream signals are sent to an audio processing unit (15) after being decoded by an A2DP decoder (18), sound signals collected by the audio collecting unit (12) are sent to the audio processing unit (15) after being subjected to analog-to-digital conversion by an analog-to-digital converter (14), the audio processing unit (15) is used for performing signal processing and sound mixing on the sound signals and the music stream signals, and stereo sound mixing signals obtained after the signal processing and the sound mixing are sent to a low-delay wireless audio module (11), A digital-to-analog converter (13) and an audio encoder (16); the stereo audio mixing signal after digital-to-analog conversion by the digital-to-analog converter (13) is sent to a local loudspeaker unit (3) for playing; the stereo mixing signals subjected to stereo coding by the audio coder (16) are sent to a Bluetooth connecting unit (17) of the embedded device (1), and the Bluetooth connecting unit (17) of the embedded device (1) transmits the stereo mixing signals to a Bluetooth module (21) of the intelligent terminal device (2) in an uplink mode; the low-delay wireless audio module (11) of the embedded device (1) broadcasts a shared stereo audio mixing signal to other embedded devices (1) by adopting a low-delay RF channel, the low-delay wireless audio module (11) of other embedded devices (1) receives the stereo audio mixing signal and sends the stereo audio mixing signal to the audio processing unit (15), the audio processing unit (15) performs signal processing on the stereo audio mixing signal and performs audio mixing with a sound signal acquired by the audio acquisition unit (12) of the local embedded device (1), the audio mixing signal obtained after audio mixing is sent to the digital-to-analog converter (13), and the audio mixing signal subjected to digital-to-analog conversion by the digital-to-analog converter (13) is sent to the local loudspeaker unit (3) for playing; the Bluetooth module (21) of the intelligent terminal device (2) is connected with the Bluetooth connecting unit (17) of the embedded device (1) through SWISS, and the Bluetooth connecting unit (17) of the embedded device (1) is connected with the Bluetooth module (21) of the intelligent terminal device (2) through SWISS to carry out uplink and downlink transmission of stereo full-frequency audio signals.
2. The wireless multi-audio-capture interoperability system of claim 1, wherein: the sound signal collected by the audio collection unit (12) is a microphone signal, a line in signal or a receiving terminal signal of an external wireless microphone.
3. The wireless multi-audio-capture interoperability system of claim 1, wherein: the signal processing of the audio processing unit (15) is reverberation, equalization, pitch change, vocal cancellation, musical instrument cancellation, noise reduction, distortion, echo, edging, vibrato, harmony or chorus.
4. The wireless multi-audio-capture interoperability system of claim 1, wherein: the audio encoder (16) is configured to encode stereo audio and to band full frequency signals having a sampling frequency greater than 16 kHz.
5. The wireless multi-audio-capture interoperability system of claim 4, wherein: the sampling frequency is 44.1kHz or 48 kHz.
6. The wireless multi-audio-capture interoperability system of claim 1, wherein: the RF channel based on which the audio signals are transmitted between the low-delay wireless audio modules (11) of the two embedded devices (1) is a low-delay wireless communication channel of UHF, 1.2G, 2.3G, 2.4G or 5.8G frequency band.
7. The wireless multi-audio-capture interoperability system of claim 6, wherein: the low-delay wireless audio module (11) of the embedded device (1) is a sending end for sending wireless audio signals or a receiving end for receiving the wireless audio signals, and the low-delay wireless audio module (11) serving as the sending end or the receiving end can be automatically set according to user operation configuration or scenes.
8. The wireless multi-audio collection interoperation system according to any one of claims 1 to 7, wherein: the intelligent terminal device (2) is a mobile phone, a tablet personal computer, a notebook computer, a network set-top box and a television with a Bluetooth module (21).
9. The wireless multi-audio collection interoperation system according to any one of claims 1 to 7, wherein: the embedded device (1) further comprises a USB interface and a rechargeable battery, wherein the USB interface is connected with a charging end of the rechargeable battery, and the rechargeable battery is used for supplying power to the Bluetooth connecting unit (17), the low-delay wireless audio module (11), the audio acquisition unit (12), the digital-to-analog converter (13), the analog-to-digital converter (14), the audio processing unit (15), the A2DP decoder (18) and the audio encoder (16).
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