CN120415476B

CN120415476B - Auracast technology-based electronic equipment audio broadcast adaptation system and method

Info

Publication number: CN120415476B
Application number: CN202510902665.XA
Authority: CN
Inventors: 余涛
Original assignee: Shenzhen Chipsguide Technology Co ltd
Current assignee: Shenzhen Chipsguide Technology Co ltd
Priority date: 2025-07-01
Filing date: 2025-07-01
Publication date: 2025-09-05
Anticipated expiration: 2045-07-01
Also published as: CN120415476A

Abstract

The invention discloses an electronic equipment audio broadcasting adaptation system and method based on Auracast technology, which relates to the technical field of audio broadcasting, wherein a Auracast transceiver enters a receiving mode, an input source is detected, an audio signal is acquired based on the input source, the audio signal is processed and packaged into a broadcasting packet, a Auracast transceiver enters a transmitting mode, broadcasting parameters are configured, the broadcasting packet is circularly transmitted through a Bluetooth LEAudio protocol, and the Auracast transceiver transmits the broadcasting packet to all receiving ends supporting Auracast function reception in a broadcasting coverage range of the Auracast transceiver. The invention supports a one-to-many broadcast mode, and the transmitting end can simultaneously transmit audio streams to an infinite number of receiving devices without pairing each device separately. The receiving end can receive the signals only by scanning and adding the broadcasting group, and is suitable for scenes requiring large-scale equipment synchronization.

Description

Auracast technology-based electronic equipment audio broadcast adaptation system and method

Technical Field

The invention relates to the technical field of audio broadcasting, in particular to an electronic equipment audio broadcasting adaptation system and method based on Auracast technology.

Background

Auracast is an audio broadcasting technology formally introduced in 2022 by the bluetooth alliance (BluetoothSIG), and is constructed based on the bluetooth LEAudio (low energy audio) protocol. The Bluetooth wireless communication system breaks through the limitation of the traditional Bluetooth one-to-one connection, allows a single transmitter to broadcast audio to an unlimited number of receivers at the same time, provides a revolutionary solution for scenes such as public broadcasting, audio navigation, multi-user audio sharing and the like, increases the markets of electronic equipment such as mobile phones, computers, televisions and the like with a small number of Auracast functions, has poor multi-equipment synchronism in the traditional Bluetooth connection mode, has obvious time delay difference at a receiving end, supports point-to-point or point-to-multi connection (such as 'one-to-two' headphones) in classical Bluetooth (such as A2DP protocol), needs to establish connection for each receiving equipment independently, is strictly limited in connection number (usually not more than 7), and is complex in equipment management (needs to be paired and synchronized one by one). The devices are required to be connected by pairing (PIN code input and manual confirmation), the process is complicated, the receiving end is required to be bound with the transmitting end in advance, and the method is not suitable for accessing temporary or anonymous devices, such as temporary audio receiving in public places.

Disclosure of Invention

The invention aims to provide an electronic equipment audio broadcasting adaptation system and method based on Auracast technology, so as to solve the problem of the deficiency in the background technology.

In order to achieve the above purpose, the invention provides the following technical scheme that the electronic equipment audio broadcasting adaptation system based on Auracast technology comprises:

Auracast the transceiver enters a receiving mode, namely detecting an input source, determining a sound source input mode, acquiring an audio signal based on the input source, processing the audio signal and packaging the audio signal into a broadcast packet;

auracast the transceiver enters a transmitting mode, namely, configuring broadcast parameters, and circularly transmitting broadcast packets through a Bluetooth LEAudio protocol;

The Auracast transceiver transmits the broadcast packet to all receivers supporting Auracast function reception within the Auracast transceiver broadcast coverage.

In a preferred embodiment, the detecting the input source and determining the audio source input mode, collecting the audio signal based on the input source includes:

detecting an input source, analyzing metadata of broadcast information of the input source, judging whether the broadcast information is an encrypted channel, if so, inputting a key verification broadcast code for the encrypted channel, and adding a BIG group after verification is successful;

the BIS timing is synchronized and the audio signal is acquired based on the data source.

In a preferred embodiment, the processing and encapsulating the audio signal into broadcast packets includes:

Constructing a handshake mechanism corresponding to the audio signal, wherein the handshake mechanism comprises a handshake architecture and transmitting information, and the transmitting information comprises a transmitting range and a transmitting object type;

and packaging the audio signal based on the handshake architecture to obtain a broadcast packet.

In a preferred embodiment, the encapsulating the audio signal based on the handshake architecture to obtain a broadcast packet includes:

Configuring a network space corresponding to Auracast transceivers, and setting a handshake map and handshake points in the network space, wherein the handshake points are connected with the handshake map, and the handshake map is a geographic area surface;

Setting a transmitting assistant between the handshake points and the handshake map, wherein the transmitting assistant comprises a transmitting range corresponding to the handshake map and a distribution point;

taking a handshake map, handshake points and a transmitting assistant in a network space as a handshake architecture;

and packaging the audio information according to the handshake architecture to obtain a broadcast packet.

In a preferred embodiment, the step of disposing a transmitting assistant between the handshake point and the handshake map includes:

Carrying out region division on the handshake map to obtain a plurality of region surfaces, setting corresponding distribution points corresponding to the plurality of region surfaces, and binding the distribution points with the corresponding region surfaces;

The plurality of distribution points are all connected with the handshake point, and the plurality of distribution points are used as transmitting assistants.

In a preferred embodiment, the encapsulating the audio information according to the handshake architecture to obtain a broadcast packet includes:

storing the audio information in a handshake point and fixedly storing the audio information;

and providing the storage state of the audio information to a distribution point through a handshake point to complete the encapsulation of the audio information.

In a preferred embodiment, the Auracast transceiver enters a transmit mode:

Determining a broadcasting transmitting area surface, and configuring broadcasting parameters of distribution points corresponding to the area surface;

And acquiring the audio information stored in the distribution point and the handshake point, and broadcasting the audio information to equipment supporting Auracast transceiver connection in the corresponding area.

The invention also provides an electronic equipment audio broadcast adaptation method based on Auracast technology, which comprises the following steps:

Step one, auracast, the transceiver enters a receiving mode, namely detecting an input source, determining a sound source input mode, acquiring an audio signal based on the input source, processing the audio signal and packaging the audio signal into a broadcast packet;

Step two, auracast the transceiver enters a transmitting mode, namely, configuring broadcast parameters, and circularly transmitting broadcast packets through a Bluetooth LEAudio protocol;

step three, auracast transceiver sends broadcast packet to all receiving end supporting Auracast function in broadcast coverage area of Auracast transceiver.

In the technical scheme, the invention has the technical effects and advantages that:

1. The invention supports a one-to-many broadcast mode, and the transmitting end can simultaneously transmit audio streams to an infinite number of receiving devices without pairing each device separately. The receiving end can receive signals only by scanning and adding the broadcasting group, is suitable for scenes (such as public broadcasting, conference live broadcasting, scenic spot guiding and the like) needing large-scale equipment synchronization, and greatly improves the multi-equipment cooperation efficiency. With the broadcast mode, the transmitting end does not need to be paired with the receiving end in advance. The receiving end can actively scan available broadcast audio streams and can freely select to join or leave (similar to FM radio tuning), so that 'instant hearing is supported', and the method is particularly suitable for stranger scenes (such as airport passengers receiving flight notification by using own earphone without connecting special equipment of an airport);

2. The Auracast transceiver of the invention fills the functional blank that audio and video equipment such as mobile phones, computers, televisions and the like can not perform one-to-many audio broadcasting for the speaker earphone. Brings brand new hearing experience to users. At the same time Auracast transceiver supports bluetooth connection, UAC audio input, and then broadcast transmission as Auracast host to all speaker headphones with Auracast function reception for listening, unlimited number of connection restrictions.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

Fig. 1 is a schematic diagram of the connection of Auracast transceivers of the present invention.

Fig. 2 is a flow chart of Auracast transceiver modes of the present invention.

Fig. 3 is a flow chart of the Auracast transceiver operation of the present invention.

Detailed Description

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

Referring to fig. 1-3, an audio broadcast adapting system of an electronic device based on Auracast technology in this embodiment includes:

Auracast the transceiver enters a receiving mode, namely detecting an input source and determining an audio source input mode (Bluetooth connection, UAC wired input or microphone input), (determining whether an encryption channel is adopted, if so, a key is needed to receive an audio signal), acquiring the audio signal based on the input source, processing the audio signal and packaging the audio signal into a broadcasting packet (BIS data packet) (comprising a time sequence stamp, a stream identifier and CRC check);

auracast the transceiver enters a transmission mode, namely, configuring broadcast parameters, (selecting encryption processing) and circularly transmitting broadcast packets through a Bluetooth LEAudio protocol;

The Auracast transceiver transmits the broadcast packet to all receiving ends (mobile phone, computer, television, sound box or earphone) supporting Auracast function reception within the broadcast coverage of the Auracast transceiver.

The Auracast transceiver is used with plug and play, supports various sound source inputs, such as Bluetooth, UAC, microphone and the like, can be connected with a plurality of sound source devices such as a mobile phone, a computer, a television and the like, and broadcasts sounds of the sound source devices such as the mobile phone, the computer, the television and the like. The defect that a mobile phone computer television does not support Auracast functions is overcome.

The Auracast transceiver adopts a standard LC3 protocol, a user can configure encrypted connection and unencrypted connection by himself, and in the unencrypted scene, the compatibility problem of Auracast broadcast connection is greatly expanded, so long as headphones and sound equipment supporting Auracast functions can be normally connected with audio content transmitted by the Auracast transceiver. The encryption state can also protect the privacy problem of the user for special occasions. The cross-brand adaptation compatibility problem is solved.

The Auracast transceiver can work normally only by using an ATS2853P2 chip and adding very few peripheral components, the price is far lower than the cost of a mobile phone computer, and the construction and transformation cost of a transmitter broadcasting system is very low.

The Auracast transceiver is used as a transmitting mode or a receiving mode, the broadcasting operation and the receiving operation are completed by one key, the user is not required to carry out excessive complex operation, and the use is simple and convenient.

The Auracast transceiver has no platform limitation, can be connected as long as the standard Auracast function is supported, can use the same Auracast transceiver for broadcasting and receiving and then outputting to corresponding audio equipment for playing, reduces the platform compatibility limiting scene and solves the problem that most of the existing markets do not support Auracast functions.

In one embodiment, the detecting the input source and determining the audio source input mode, collecting the audio signal based on the input source includes:

Detecting an input source, analyzing metadata (Auracast-ID and encryption mark) of broadcast information of the input source, judging whether the broadcast information is an encrypted channel, if so, inputting a key verification broadcast code for the encrypted channel, and adding a BIG group after verification is successful;

After the system is started, the input source detection stage is first entered. Through the built-in signal scanning module, the module can continuously monitor the wireless environment of the equipment, and actively search Auracast broadcast signals existing around. Once a potential broadcast signal is detected, the system will quickly acquire it and proceed to parse the broadcast information metadata carried in the signal. The two most critical items of information in the broadcast information metadata are Auracast-ID and encryption flags. Auracast-ID is a unique identity for each Auracast broadcast source, such as the "ID card number" of the broadcast source, by which the system can accurately distinguish between different broadcast sources. The encryption mark is a boolean value type mark for visually indicating whether the broadcast channel is protected by encryption technology. The system utilizes a special metadata parsing algorithm to accurately extract Auracast-ID and encryption mark from the captured broadcast signal, and provides basic data for subsequent processing.

After the metadata is analyzed and the encrypted mark is obtained, the system judges according to the value of the mark. If the encryption flag is displayed as "yes", it indicates that the currently detected broadcast channel belongs to the encrypted channel. At this time, the system triggers a key verification mechanism, and requires the user to provide a corresponding decryption key or through a preset key management module.

After receiving the key, the system compares and verifies the key with the encrypted broadcast code in the broadcast signal. The specific verification process involves complex encryption algorithms and decryption operations, and the system will apply the input key to the encrypted broadcast code for decryption operations using the same encryption algorithm as the broadcast source. If the decrypted result matches with the expected broadcast content characteristics, such as a specific check code, a content identifier and the like, the verification is judged to be successful, otherwise, the verification fails, and the system refuses to receive the broadcast content of the encrypted channel and prompts the user to have a key error or take other corresponding error processing measures.

After the key verification is successful, the system will add the electronic device to the corresponding BIG (broadcast information group) group. The BIG group is a logical grouping for managing and distributing broadcast information in Auracast technologies, and joining the BIG group means that the electronic device formally becomes a legal receiving end of the broadcast source.

The system sends request information for joining the BIG group to a broadcast source through a specific protocol and a communication mechanism, wherein the request information comprises relevant identification information of the equipment and verification passing certification data. After receiving the request and confirming the legitimacy, the broadcast source brings the electronic device into the BIG group management list and opens the receiving authority of the broadcast content to the electronic device. The electronic device thus completes the key steps from the detection of joining the broadcast receiving system. After the BIG group is successfully added, the system enters a BIS (broadcast information scheduling) time sequence synchronization stage. BIS time sequence defines the sending and receiving rules of broadcast content in time dimension, and ensures that the receiving end can accurately and orderly receive broadcast information. The system acquires BIS time sequence information by interacting with the broadcast source, and adjusts the working clock and the data receiving rhythm of the system according to the information so as to realize accurate synchronization with the broadcast source.

After BIS time sequence synchronization is completed, the system starts to collect audio signals by utilizing the built-in audio collection module based on the synchronized data source. The audio acquisition module continuously and stably extracts audio data from the broadcast signal according to an audio data format and a transmission standard specified by Auracast protocol, and converts the audio data into a digital audio signal format which can be processed by the electronic equipment, so that preparation is made for subsequent operations such as audio playing and processing.

In one embodiment, the processing and encapsulating the audio signal into broadcast packets includes:

Packaging the audio signal based on a handshake architecture to obtain a broadcast packet;

in one embodiment, the encapsulating the audio signal based on the handshake architecture to obtain a broadcast packet includes:

Configuring a network space corresponding to Auracast transceivers, and setting a handshake map and handshake points in the network space, wherein the handshake points (temporary storage can be provided with a plurality of handshake maps) are connected with the handshake map, and the handshake map is a geographic area surface;

In one embodiment, the disposing a transmitting assistant between the handshake point and the handshake map includes:

In one embodiment, the encapsulating the audio information according to the handshake architecture to obtain a broadcast packet includes:

providing the storage state of the audio information to a distribution point through a handshake point to finish the encapsulation of the audio information;

It should be noted that the distribution network model based on the geographic area includes a spatial topological structure (representing an open range of a broadcast connection), transmitting information, a transmitting range, a transmitting object type, a handshake map, and a geographic area face data structure (such as a polygon coordinate set), wherein the transmitting range is a coverage range defined by geographic area coordinates, the transmitting object type is a receiving device classification (such as a mall customer and an office area employee) based on a position. Spatial boundaries of the audio broadcast are defined. Dynamic updates (e.g., mall area temporary adjustments) are supported. Handshake point-the temporary storage (configurable storage capacity) responsible for audio data, the connection state with the distribution point is maintained. And an assistant is transmitted to realize a space partition broadcasting strategy and support multi-region differentiated audio content. The regional division mechanism of the transmitting assistant further enhances the spatially directed broadcasting capability of map parsing, which parses the geographical region plane of the handshake map into computational geometry models. Meshing, namely dividing the regional surface into a plurality of subareas (such as 100m multiplied by 100m meshing). Distribution point allocation, namely, allocating a special distribution point for each sub-area. The dual functions of the distribution point are that the space agent is used as a broadcasting agent of a specific geographic area, the protocol gateway is used for converting Bluetooth broadcasting protocol and space metadata, and the audio information packaging and fixed storage mechanism is that the packaging method provided by the embodiment combines data fixed storage and state notification. The advantages of fixed storage are low latency distribution, the receiving device can directly read data from a fixed location, reduced broadcast load, only need to transmit status updates rather than complete audio, enhanced reliability, and improved anti-interference capability due to the storage redundancy design. Museum guiding, namely automatically playing corresponding comments according to the exhibition hall area, intelligent transportation, namely broadcasting traffic information in a crossing direction, and market marketing, namely pushing different promotion audios in a partitioning mode. The input source can be other sound sources such as a mobile phone and a television, the input source and the corresponding broadcasted object can have an accurate handshake function, the condition of broadcasting confusion of the broadcasted audio source in different corresponding ranges or devices is avoided, the regional broadcasting can be more accurately carried out, the regional surface is set in advance according to the corresponding requirement of the broadcasting, and then the broadcasting is carried out only through corresponding acquisition and broadcasting between a distribution point and a handshake point, and a specific usable scene such as a scene one is public transportation

On a subway or bus, an audio source device (such as a broadcasting device) of the subway or bus system turns on Auracast the transmitter function. Passengers connect to the audio source via bluetooth using a bluetooth headset, smart watch or cell phone, etc. that supports Auracast. The passengers can freely choose whether to receive the audio content such as broadcast information and music in the carriage, and a plurality of passengers can receive the audio content at the same time without interference.

Scene two, large conference

At a large conference site, the conference sponsor enables Auracast transmitters through an audio source device (e.g., a conference sound system). The participants carry the devices (such as a mobile phone, a tablet computer, a notebook computer, etc.) supporting Auracast and choose to join the conference audio stream. Therefore, the participants can clearly hear the conference through the own equipment, and also can switch different audio channels (such as simultaneous interpretation of different languages) as required, and a large number of participants can receive audio at the same time, so that the conference communication efficiency is improved.

Scene three, tourist attractions

Within the attraction, an audio source device of the attraction (e.g., an attraction presentation system) broadcasts audio such as attraction presentation via Auracast transmitters. The tourist uses equipment (such as intelligent glasses, intelligent tour guide equipment, mobile phones and the like) with Auracast functions to receive audio, the tourist can hear the detailed description of scenic spots at any time in the tour process, and the problems of signal collision and the like can not occur when a plurality of tourists are used simultaneously, so that the tourist obtains better tour experience.

Scene four teacher/tour guide explanation

In scenes such as museums, classrooms and the like, the speaking sound of a tour guide and a teacher is often not guaranteed to be clearly transmitted to tourists and students at each corner, so that corresponding contents cannot be heard, and a Auracast transmitter can transmit a broadcasting function to equipment (such as intelligent glasses, intelligent tour guide equipment, mobile phones and the like) wearing Auracast functions to receive audio through Auracast after acquiring the sound of a corresponding speaker through a microphone.

In one embodiment, the Auracast transceiver enters a transmit mode:

The audio information stored in the handshake point is acquired through the distribution point and broadcast to devices supporting Auracast transceiver connections in the corresponding area plane (the devices may be a plurality of stereo, headphones, television, and may also be connected Auracast receivers).

It should be noted that, entering the transmitting mode, the transceiver starts to enter the operating state of the transmitting mode. And judging whether encryption is carried out, namely configuring a 16-byte broadcast code and an encryption flag, preparing broadcast metadata including AuraCast _ID, the encryption flag, channels and other information, and continuously transmitting broadcast packets. If not, the open broadcast flag is configured, broadcast metadata is prepared (the content is similar to that of encryption, but encryption related specific information is not involved), then a broadcast packet is continuously sent (the transmission mode is that an analog signal input by an audio source (such as a microphone, a UAC interface and Bluetooth) is converted into a digital signal through a 24-bit sigma-delta ADC, firstly, the digital audio stream enters a layered coding engine through an AI noise reduction module to carry out environmental noise suppression (supporting 40dB dynamic range), a core layer adopts LC3 coding to ensure basic tone quality, an enhancement layer adopts SBC coding to provide additional details, a composite data stream with forward error correction capability is formed (the FEC rate can be configured to be 15% -50%), a protocol stack encapsulates the composite data stream into a Bluetooth LEAudio broadcast packet, and the composite data stream is circularly sent on 24 physical channels through a time division multiplexing Technology (TDMA), and each channel occupies 1 time slot to realize multi-device synchronous reception).

The method for adapting audio broadcasting of electronic equipment based on Auracast technology in this embodiment includes:

Step three, the Auracast transceiver transmits the broadcast packet to all receiving ends supporting Auracast function reception in the broadcast coverage area of the Auracast transceiver;

broadcasting end flow:

Audio input, LC3 coding, BIS encapsulation, BIG setup, broadcast transmission.

And the key node is LC3 parameter configuration, encryption processing and synchronous information broadcasting.

The receiving end flow:

Broadcast scanning, BIG synchronization, BIS receiving, LC3 decoding and audio output.

Key nodes are error hiding processing, coding and decoding parameter negotiation and volume control.

And entering a receiving mode, namely starting the transceiver to enter the working state of the receiving mode. Scan auracast broadcast the transceiver scans the surrounding auracast broadcast signals. And judging whether the broadcast signal is found, if not, continuously maintaining the scanning state, and continuously detecting the broadcast signal. The metadata is parsed and includes AuraCast _id, encryption flag, etc. And judging whether the channel is an encrypted channel, if not, directly adding a BIG group, and then synchronizing BIS time sequence and receiving audio. It is necessary to enter a key for authentication. And (3) successfully verifying, namely adding the BIG group, and then synchronizing BIS time sequence and receiving audio. And (3) verification failure, namely prompting errors and requiring retries, wherein the user needs to input the secret key again for verification. Auracast transceiver supporting one-to-many broadcast mode, the transmitting end can simultaneously transmit audio streams to an unlimited number of receiving devices without pairing each device separately. The receiving end can receive signals only by scanning and adding the broadcasting group, is suitable for scenes (such as public broadcasting, conference live broadcasting, scenic spot guiding and the like) needing large-scale equipment synchronization, greatly improves the cooperation efficiency of multiple devices, and adopts a broadcasting mode, the transmitting end does not need to be paired with the receiving end in advance. The receiving end can actively scan available broadcast audio streams and can freely select to join or leave (similar to FM radio tuning), so that the receiving end supports 'instant hearing and instant hearing', and is particularly suitable for stranger scenes (such as airport passengers receiving flight notices by using own earphone without connecting special equipment of an airport). And in the receiving mode, after the signals received by the antenna array are amplified by a low noise amplifier (NF <2 dB), a plurality of channel signals are processed simultaneously by a multichannel coherent demodulator, and the original data stream is recovered by a maximum likelihood estimation algorithm. The intelligent buffer dynamically adjusts the buffer depth of 128ms-512ms, and can tolerate the highest 20% data packet loss rate without affecting the hearing experience in combination with the packet loss concealment algorithm (PLC). The decoded audio stream is subjected to volume equalization through a Dynamic Range Compressor (DRC), is finally converted into an analog signal through a 24-bit DAC and is output to an earphone or a loudspeaker, and a transceiver adopts a double-frequency scanning technology, and simultaneously performs device discovery in a 2.4GHzISM frequency band (used for traditional Bluetooth) and a 1.7GHz frequency band (used for LEAudio), so that the scanning period is shortened to 50ms. When receiving equipment supporting Auracast is detected, a secure pairing channel is immediately established, a 128-bit session key is generated through elliptic curve Diffie-Hellman key Exchange (ECDH), and communication security is ensured. And introducing a high-precision time synchronization protocol (PTPoverBluetooth), and controlling clock deviation among multiple devices within +/-10 mu s through a time stamp comparison and Kalman filtering algorithm to realize sub-millisecond audio synchronization.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An electronic device audio broadcast adaptation system based on Auracast technology, characterized by comprising:

The Auracast transceiver enters receiving mode: it detects the input source and determines the audio source input method, collects the audio signal based on the input source, processes the audio signal and encapsulates it into a broadcast packet;

The step of processing the audio signal and encapsulating the audio signal into a broadcast packet includes:

Constructing a handshake mechanism corresponding to the audio signal, wherein the handshake mechanism includes a handshake architecture and transmission information, and the transmission information includes a transmission range and a transmission object type;

The audio signal is encapsulated based on the handshake architecture to obtain a broadcast packet, including:

A network space is configured corresponding to the Auracast transceiver, and a handshake map and a handshake point are set in the network space, wherein the handshake point is connected to the handshake map, and the handshake map is a geographical area surface;

A launch assistant is set between the handshake point and the handshake map, wherein the launch assistant includes the launch range and distribution point corresponding to the handshake map:

The step of setting a transmitting assistant between the handshake point and the handshake diagram includes:

Divide the handshake graph into regions to obtain multiple regional surfaces, set corresponding distribution points for the multiple regional surfaces, and bind the distribution points to the corresponding regional surfaces;

Connect multiple distribution points to the handshake point and use multiple distribution points as launch assistants;

The handshake graph, handshake points, and launch assistants in cyberspace are used as the handshake architecture;

The audio information is encapsulated according to the handshake architecture to obtain a broadcast packet, including:

The audio information is stored in the handshake point and stored permanently;

The storage status of the audio information is provided to the distribution point through the handshake point to complete the packaging of the audio information;

Auracast transceiver enters transmit mode:

Determine the broadcast transmission area and configure the broadcast parameters of the corresponding distribution points in the area;

The audio information is obtained through the audio information stored in the distribution point and the handshake point, and the audio information is broadcast to the devices in the corresponding area that support Auracast transceiver connection;

The Auracast transceiver sends the advertising packet to all Auracast-supported receivers within the Auracast transceiver's broadcast coverage area, and sends the advertising packet cyclically through the Bluetooth LE Audio protocol.

2. The Auracast-based audio broadcast adaptation system for electronic devices according to claim 1, wherein detecting an input source and determining an audio source input mode, and collecting an audio signal based on the input source, comprises:

Detect the input source, parse the metadata of the broadcast information of the input source, determine whether it is an encrypted channel, if it is an encrypted channel, enter the key to verify the broadcast code, and join the BIG group after successful verification;

Synchronize BIS timing and capture audio signals based on the data source.

3. An electronic device audio broadcast adaptation method based on Auracast technology, for implementing the electronic device audio broadcast adaptation system based on Auracast technology according to any one of claims 1 and 2, characterized in that it comprises:

Step 1: The Auracast transceiver enters receiving mode: detects the input source and determines the audio input method, collects the audio signal based on the input source, processes the audio signal and encapsulates it into a broadcast packet;

Step 2: The Auracast transceiver enters the transmitting mode: configure the broadcast parameters and send the broadcast packets cyclically via the Bluetooth LE Audio protocol;

Step 3: The Auracast transceiver sends the broadcast packet to all Auracast-capable receivers within the broadcast coverage area of the Auracast transceiver.