Audio switching system and method

Abstract

Disclosed in the present invention are an audio switching system and method. The system comprises at least two audio receiving devices and an audio sending device. Each audio receiving device of the system has either of two states, i.e., a target audio receiving device and a non-target audio receiving device. When the target audio receiving device and the audio sending device perform audio transmission by means of a Bluetooth bidirectional connection, the non-target audio receiving device monitors audio data transmitted to the target audio receiving device by the audio sending device, and receives connection information of the target audio receiving device and the audio sending device; and when the target audio receiving device detects an audio switching operation, the state of each audio receiving device is switched to another state, which is different from the current state, among the two states, i.e., the target audio receiving device and the non-target audio receiving device. By means of implementing the present invention, the problem of a data communication packet loss increase caused by switching delay, disconnection abnormalities, connection abnormalities and the shortening of a communication distance during an audio switching process is solved.

Description

Audio switching system and method Technical Field

[0001] The present invention relates to the technical field of audio communication, and in particular to an audio switching system and method. Background Art

[0002] Currently, the combination of Bluetooth headsets and Bluetooth base stations is becoming increasingly popular in high-end personal office settings. The need for connectivity between headsets, base stations, and mobile phones, as well as for flexible switching between call and music channels, is also growing. Some existing solutions do not support connectivity and channel switching between multiple devices. Some use two Bluetooth chips on the base station to handle connections between the base and headsets, and between the base and the phone, respectively. Some establish Bluetooth connections between the base, headsets, and phone in pairs, with a single Bluetooth chip on the base station forwarding private notification commands. Some use a single Bluetooth chip on the base station to simultaneously establish two eSCO / A2DP channels.

[0003] Using two chips on the Base will bring about problems such as high chip usage cost, difficult antenna design, difficult hardware layout and high development difficulty; using one chip on the Base, when the Base is connected to the mobile phone, the connection is first disconnected, and then a private notification command is sent to the headset through the Base, and the headset then establishes a connection with the mobile phone. This process will have a large delay and may cause abnormal disconnection or connection failure; using one chip on the Base to establish two eSCO / A2DP channels and forward audio data, there will also be delays in audio switching, and establishing two audio communication connections on the Base will result in unstable connections, easy disconnection and shorter communication distances, which will lead to increased data communication packet loss.

[0004] Therefore, how to use a Bluetooth chip on Base to solve the problems of audio switching delay, abnormal disconnection, abnormal connection, and increased data communication packet loss caused by shorter communication distance has become an urgent problem that needs to be solved. Summary of the Invention

[0005] The embodiments of the present invention provide an audio switching system and method, which can effectively solve the problems of audio switching delay, abnormal disconnection, abnormal connection, and increased data communication packet loss caused by shortened communication distance when using a single chip on a Base in the prior art.

[0006] An embodiment of the present invention provides an audio switching system, comprising: at least two audio receiving devices and one audio sending device;

[0007] In the case where an audio receiving device is bidirectionally connected to another audio receiving device and an audio sending device via Bluetooth, the audio receiving device may be in either of two states: a target audio receiving device or a non-target audio receiving device.

[0008] The target audio receiving device and the audio sending device perform audio transmission via a Bluetooth bidirectional connection; wherein the target audio receiving device is an audio receiving device that is currently bidirectionally connected to the audio sending device via Bluetooth;

[0009] The non-target audio receiving device monitors the audio data transmitted from the audio sending device to the target audio receiving device through a preset monitoring technology, and receives connection information of the Bluetooth two-way connection between the target audio receiving device and the audio sending device through a Bluetooth connection; wherein the non-target audio receiving device is an audio receiving device that is not currently connected to the audio sending device through Bluetooth two-way connection;

[0010] When the audio receiving device detects the audio switching operation, the state of the audio receiving device is switched to another state different from the current state, one of the two states of the target audio receiving device and the non-target audio receiving device.

[0011] Furthermore, when the audio receiving device detects the audio switching operation, the state of the audio receiving device is switched to another state different from the current state of the target audio receiving device or the non-target audio receiving device, including:

[0012] Generate an audio switching instruction and transmit the audio switching instruction to the non-target audio receiving device, so that the non-target audio receiving device is changed to a new target audio receiving device and performs audio transmission with the audio sending device through a Bluetooth two-way connection;

[0013] Changing to a new non-target audio receiving device and switching to monitoring mode, monitoring audio data transmitted from the audio sending device to the new target audio receiving device using a preset monitoring technology; and

[0014] The connection information of the new target audio receiving device and the audio sending device for a Bluetooth two-way connection is received via the Bluetooth connection.

[0015] Furthermore, in the case where an audio receiving device is bidirectionally connected to another audio receiving device and an audio sending device via Bluetooth:

[0016] The target audio receiving device is further configured to, upon receiving an audio switching instruction transmitted by a non-target audio receiving device, change to a new non-target audio receiving device and switch to a monitoring mode, monitoring audio data transmitted by the audio sending device to the new target audio receiving device through a preset monitoring technology;

[0017] receiving, via Bluetooth connection, connection information for a new target audio receiving device to establish a Bluetooth bidirectional connection with the audio sending device;

[0018] When the non-target audio receiving device detects the audio switching operation, it changes to a new target audio receiving device, generates the audio switching instruction, and performs audio transmission with the audio sending device via a Bluetooth two-way connection.

[0019] Furthermore, the two audio receiving devices are a base and a headset; the audio sending device is a mobile phone.

[0020] Furthermore, the preset monitoring technology includes: TrueWireless Mirroring technology or MCSync technology.

[0021] Furthermore, the connection mode of the Bluetooth bidirectional connection includes any one of the following and their combination: BREDR connection and BLE connection.

[0022] As an improvement to the above solution, another embodiment of the present invention provides an audio switching method applicable to a target audio receiving device in an audio switching system, the audio switching method comprising:

[0023] When an audio switching operation is detected, an audio switching instruction is generated and transmitted to a non-target audio receiving device, so that the non-target audio receiving device is changed to a new target audio receiving device and performs audio transmission with the audio sending device via a Bluetooth two-way connection;

[0024] Changing to a new non-target audio receiving device and switching to monitoring mode, monitoring audio data transmitted from the audio sending device to the new target audio receiving device using a preset monitoring technology; and

[0025] The connection information of the new target audio receiving device and the audio sending device for a Bluetooth two-way connection is received via the Bluetooth connection.

[0026] Further, upon receiving an audio switching instruction transmitted by a non-target audio receiving device, the device changes to a new non-target audio receiving device and switches to a monitoring mode, monitoring audio data transmitted from the audio sending device to the new target audio receiving device through a preset monitoring technology;

[0027] receiving, via Bluetooth connection, connection information for a new target audio receiving device to establish a Bluetooth bidirectional connection with the audio sending device;

[0028] When the non-target audio receiving device detects the audio switching operation, it changes to a new target audio receiving device, generates the audio switching instruction, and performs audio transmission with the audio sending device via a Bluetooth two-way connection.

[0029] Furthermore, the preset monitoring technology includes: TrueWireless Mirroring technology or MCSync technology.

[0030] Furthermore, the connection mode of the Bluetooth bidirectional connection includes any one of the following and their combination: BREDR connection and BLE connection.

[0031] The following beneficial effects are achieved by implementing the present invention:

[0032] The present invention provides an audio switching system, comprising at least two audio receiving devices and an audio transmitting device. When an audio receiving device is respectively connected to another audio receiving device and an audio transmitting device via Bluetooth bidirectional connection, the audio receiving device includes either a target audio receiving device or a non-target audio receiving device. The target audio receiving device and the audio transmitting device perform audio transmission via Bluetooth bidirectional connection. The target audio receiving device is an audio receiving device currently connected to the audio transmitting device via Bluetooth bidirectional connection. The non-target audio receiving device monitors the audio data transmitted to the target audio receiving device by the audio transmitting device through a preset monitoring technology, and receives connection information of the Bluetooth bidirectional connection between the target audio receiving device and the audio transmitting device via Bluetooth connection. The non-target audio receiving device is an audio receiving device that is not currently connected to the audio transmitting device via Bluetooth bidirectional connection. When the audio receiving device detects an audio switching operation, the audio receiving device switches the state of the audio receiving device to the other state of the target audio receiving device or the non-target audio receiving device, which is different from the current state. There is no need to disconnect first and then forward the private notification instruction before establishing the connection, so there will be no disconnection exceptions or connection failures; there is no need to forward audio data or establish two-way audio communication connections, so there will be no unstable connection, easy disconnection and shortened communication distance when forwarding audio data, and thus there will be no increase in data communication packet loss; at the same time, the target audio receiving device and the non-target audio receiving device receive the data of the audio sending device at the same time, and the communication data between the target audio receiving device and the audio sending device can be synchronized to the non-target audio receiving device, ensuring the synchronization of the communication time slots at both ends of the audio devices and eliminating the delay in the audio switching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a schematic diagram of the architecture of an audio switching system provided by an embodiment of the present invention;

[0034] FIG2 is a flow chart of an audio switching method provided by an embodiment of the present invention;

[0035] FIG3 is a schematic diagram of a first connection of the prior art provided by an embodiment of the present invention;

[0036] FIG4 is a schematic diagram of a first switching method in the prior art provided by an embodiment of the present invention;

[0037] FIG5 is a second connection diagram of the prior art provided by an embodiment of the present invention;

[0038] FIG6 is a schematic diagram of a second switching method in the prior art provided by an embodiment of the present invention;

[0039] 7 is a first connection diagram of an audio switching system provided by an embodiment of the present invention;

[0040] 8 is a second connection diagram of an audio switching system provided by an embodiment of the present invention;

[0041] FIG9 is a schematic diagram of switching logic provided by an embodiment of the present invention;

[0042] FIG10 is a first structural diagram of an audio switching device provided by an embodiment of the present invention;

[0043] FIG11 is a second structural diagram of an audio switching device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] 1 , which is a schematic diagram of the architecture of an audio switching system provided by an embodiment of the present invention, including: at least two audio receiving devices and one audio sending device;

[0046] In the case where an audio receiving device is bidirectionally connected to another audio receiving device and an audio sending device via Bluetooth, the audio receiving device may be in either of two states: a target audio receiving device or a non-target audio receiving device.

[0047] The target audio receiving device and the audio sending device perform audio transmission via a Bluetooth bidirectional connection; wherein the target audio receiving device is an audio receiving device that is currently bidirectionally connected to the audio sending device via Bluetooth;

[0048] The non-target audio receiving device monitors the audio data transmitted from the audio sending device to the target audio receiving device through a preset monitoring technology, and receives connection information of a Bluetooth two-way connection between the target audio receiving device and the audio sending device through a Bluetooth connection; wherein the non-target audio receiving device is an audio receiving device that is not currently connected to the audio sending device through Bluetooth two-way connection;

[0049] When the audio receiving device detects the audio switching operation, the audio receiving device switches the state of the audio receiving device to another state different from the current state of the target audio receiving device or the non-target audio receiving device;

[0050] In a preferred embodiment of the present invention, the two audio receiving devices are a base and headphones; the audio sending device is a mobile phone. The audio receiving device is a device that receives Bluetooth calls or music audio, and the audio receiving device must have monitoring mode; the audio sending device is a device that provides Bluetooth calls or music audio. The objects that work with the base and headphones are not limited to mobile phones, but can also be PCs, phones, tablets, and other devices that provide Bluetooth calls or music audio. That is, it can be a combination of not only a base, headphones, and a mobile phone, but also a base, headphones, and PC, or a base, headphones, and a phone, or a base, headphones, and a tablet. The combination with the mobile phone is not limited to a base and headphones, but can also be two headphones, two bases, and other devices that receive Bluetooth calls or music audio. That is, when the base and headphones are used together, the headphones can be replaced by a phone, a handset, and another base, or the base can be replaced by a phone, a handset, and another headphones. The devices that replace the base and mobile phone must have monitoring mode.

[0051] Preferably, when the audio receiving device detects the audio switching operation, switching the state of the audio receiving device to another state different from the current state of the target audio receiving device or the non-target audio receiving device comprises:

[0052] Generate an audio switching instruction and transmit the audio switching instruction to the non-target audio receiving device, so that the non-target audio receiving device is changed to a new target audio receiving device and performs audio transmission with the audio sending device through a Bluetooth two-way connection;

[0053] Changing to a new non-target audio receiving device and switching to monitoring mode, monitoring audio data transmitted from the audio sending device to the new target audio receiving device using a preset monitoring technology; and

[0054] The connection information of the new target audio receiving device and the audio sending device for a Bluetooth two-way connection is received via the Bluetooth connection.

[0055] Preferably, when an audio receiving device is connected to another audio receiving device and an audio sending device via Bluetooth bidirectional connection:

[0056] The target audio receiving device is further configured to, upon receiving an audio switching instruction transmitted by a non-target audio receiving device, change to a new non-target audio receiving device and switch to a monitoring mode, monitoring audio data transmitted by the audio sending device to the new target audio receiving device through a preset monitoring technology;

[0057] receiving, via Bluetooth connection, connection information for a new target audio receiving device to establish a Bluetooth bidirectional connection with the audio sending device;

[0058] When the non-target audio receiving device detects the audio switching operation, it changes to a new target audio receiving device, generates the audio switching instruction, and performs audio transmission with the audio sending device via a Bluetooth two-way connection;

[0059] Specifically, an audio receiving device can also send data, and an audio sending device can also receive data. When the audio receiving device acts as a target audio receiving device and communicates with an audio sending device, it can send data, and when the audio sending device communicates with a target audio receiving device, it can receive data. This is a process of information exchange between the two parties. For example, if someone speaks on the target audio receiving device, the target audio receiving device sends audio data to the audio sending device, and the audio sending device receives this audio data. The two parties then exchange information, meaning that the target audio receiving device and the audio sending device communicate with each other. Furthermore, the audio data sent by the target audio receiving device to the audio sending device is real-time, equivalent to a user speaking on the target audio receiving device. Once the target audio receiving device sends the current audio data to the audio sending device, the data transmission ends. After the audio mode is switched, the target audio no longer sends audio data. The data sent and received by the audio receiving device and the audio sending device includes not only audio data, but also other control data. When an audio receiving device is bidirectionally connected to another audio receiving device via Bluetooth and an audio receiving device is bidirectionally connected to an audio sending device via Bluetooth, the target audio receiving device and the audio sending device perform audio transmission via the bidirectional Bluetooth connection, wherein the target audio receiving device is the audio receiving device that is currently bidirectionally connected to the audio sending device via Bluetooth. At this time, the call audio and music audio on the audio sending device are played on the target audio receiving device, and the data of the target audio receiving device is also sent to the audio sending device, thereby realizing the function of the target audio receiving device connecting to the audio sending device for calls and listening to music; when the target audio receiving device and the audio sending device are bidirectionally connected via Bluetooth, the non-target audio receiving device monitors the data transmitted from the audio sending device to the target audio receiving device, wherein the non-target audio receiving device is an audio receiving device that is not currently bidirectionally connected to the audio sending device via Bluetooth. As shown in Figure 7, when the target audio receiving device is the Base, the non-target audio receiving device is the headset, and the audio sending device is the mobile phone, the Base and the mobile phone perform audio transmission via a two-way Bluetooth connection, enabling call audio and music audio on the mobile phone to be played on the Base. The Base's data is transmitted to the mobile phone, enabling the Base to connect to the mobile phone for calls and music listening. At this time, the headset monitors the data transmitted from the mobile phone to the Base and synchronously receives the connection information of the two-way Bluetooth connection between the Base and the mobile phone through the Bluetooth connection between the Base and the headset. When the target audio receiving device is the headset, the non-target audio receiving device is the Base, and the audio sending device is the mobile phone, the headset and the mobile phone perform audio transmission via a two-way Bluetooth connection, enabling call audio and music audio on the mobile phone to be played on the headset. The headset's data is transmitted to the mobile phone, enabling the headset to connect to the mobile phone for calls and music listening. At this time, the Base monitors the data transmitted from the mobile phone to the headset and synchronously receives the connection information of the two-way Bluetooth connection between the headset and the mobile phone through the Bluetooth connection between the headset and the Base.

[0060] Specifically, the communication protocol of the audio switching instruction between the Base and the headset can be based on a standard Bluetooth protocol or a private protocol; when the target audio receiving device detects the audio switching operation, it generates an audio switching instruction and transmits the audio switching instruction to the non-target audio receiving device, so that the non-target audio receiving device is changed to a new target audio receiving device and transmits audio with the audio sending device through a Bluetooth two-way connection; at the same time, the target audio receiving device is changed to a new non-target audio receiving device and switches to a monitoring mode, monitors the data transmitted from the audio sending device to the new target audio receiving device through a preset monitoring technology, and receives the connection information of the Bluetooth two-way connection between the new target audio receiving device and the audio sending device through the Bluetooth connection between the new target audio receiving device. As shown in Figures 7 and 8, when the target audio receiving device is a base, the non-target audio receiving device is a headset, and the audio transmitting device is a mobile phone, the base generates an audio switching instruction upon detecting an audio switching operation and transmits the audio switching instruction to the headset, thereby enabling the headset to perform audio transmission with the mobile phone via a Bluetooth bidirectional connection. Simultaneously, the base switches to monitoring mode, monitors data transmitted from the mobile phone to the headset using a preset monitoring technology, and receives connection information of the Bluetooth bidirectional connection between the headset and the mobile phone via the Bluetooth connection between the headset and the headset, thereby switching from the connection mode of Figure 7 to the connection mode of Figure 8. When the target audio receiving device is a headset, the non-target audio receiving device is a base, and the audio transmitting device is a mobile phone, the headset generates an audio switching instruction upon detecting an audio switching operation and transmits the audio switching instruction to the base, thereby enabling the base to perform audio transmission with the mobile phone via a Bluetooth bidirectional connection. Simultaneously, the headset switches to monitoring mode, monitors data transmitted from the mobile phone to the base using a preset monitoring technology, and receives connection information of the Bluetooth bidirectional connection between the base and the mobile phone via the Bluetooth connection between the headset and the headset, thereby switching from the connection mode of Figure 8 to the connection mode of Figure 7.

[0061] Preferably, the audio transmission between the audio receiving device and the audio sending device can use standard eSCO (extended connection-oriented synchronous logical transport), SCO (connection-oriented synchronous logical transport), LE Audio (low-energy Bluetooth audio transmission) or other private protocols; when an audio receiving device is respectively connected to another audio receiving device and an audio sending device via Bluetooth bidirectional connection: the target audio receiving device is also used to change to a new non-target audio receiving device and switch to monitoring mode when receiving an audio switching instruction transmitted by a non-target audio receiving device, monitor the data transmitted by the audio sending device to the new target audio receiving device through a preset monitoring technology, and receive the connection information of the new target audio receiving device and the audio sending device for Bluetooth bidirectional connection through a Bluetooth connection, wherein, when the non-target audio receiving device detects the audio switching operation, it changes to the new target audio receiving device and generates the audio switching instruction, and performs audio transmission with the audio sending device via the Bluetooth bidirectional connection. When the target audio receiving device is a Base, the non-target audio receiving device is a headset, and the audio sending device is a mobile phone, the Base is also used to switch to monitoring mode when receiving the audio switching instruction transmitted by the headset, monitor the data transmitted from the mobile phone to the headset through the preset Bluetooth monitoring technology, and receive the connection information of the Bluetooth two-way connection between the headset and the mobile phone through the Bluetooth connection between the headset; wherein, when the headset detects the audio switching operation, it generates an audio switching instruction and transmits audio to the mobile phone through the Bluetooth two-way connection. When the target audio receiving device is a headset, the non-target audio receiving device is a Base, and the audio sending device is a mobile phone, the headset is also used to switch to monitoring mode when receiving the audio switching instruction transmitted by the Base, monitor the data transmitted from the mobile phone to the Base through the preset Bluetooth monitoring technology, and receive the connection information of the Bluetooth two-way connection between the Base and the mobile phone through the Bluetooth connection between the headset and the Base, wherein, when the Base detects the audio switching operation, it generates an audio switching instruction and transmits audio to the mobile phone through the Bluetooth two-way connection.

[0062] Preferably, an audio receiving device is respectively connected to another audio receiving device and an audio sending device via Bluetooth in a two-way manner, and the connection mode of the Bluetooth two-way connection includes any one of the following and their combination: BREDR connection (traditional Bluetooth connection) and BLE connection (Bluetooth low energy connection). In the case where an audio receiving device is respectively connected to another audio receiving device and an audio sending device via Bluetooth in a two-way manner: the target audio receiving device and the audio sending device transmit audio via BREDR connection, BLE connection, or BREDR connection + BLE connection (the target audio receiving device is the audio receiving device currently connected to the audio sending device via Bluetooth in a two-way manner); the non-target audio receiving device receives the connection information of the Bluetooth two-way connection between the target audio receiving device and the audio sending device via BREDR connection, BLE connection, or BREDR connection + BLE connection with the target audio receiving device (the non-target audio receiving device is the audio receiving device currently not connected to the audio sending device via Bluetooth in a two-way manner). As shown in Figure 7, the connection method between the Base and the phone can be BREDR, BLE, or BREDR+BLE. The connection method between the Base and the headset can be BREDR, BLE, or BREDR+BLE. That is, when the connection method between the Base and the phone is BREDR, BLE, or BREDR+BLE, the connection method between the Base and the headset can be BREDR, BLE, or BREDR+BLE. As shown in Figure 8, the connection method between the headset and the phone can be BREDR, BLE, or BREDR+BLE. The connection method between the headset and the base can be BREDR, BLE, or BREDR+BLE. That is, when the connection method between the headset and the phone is BREDR, BLE, or BREDR+BLE, the connection method between the headset and the base can be BREDR, BLE, or BREDR+BLE. Currently, BREDR connection is the most common, but other connection methods can also be selected based on actual needs.

[0063] Schematically, when an audio receiving device is respectively connected to another audio receiving device and an audio sending device via Bluetooth in a two-way manner, the target audio receiving device is the audio receiving device that is currently connected to the audio sending device via Bluetooth in a two-way manner, and the non-target audio receiving device is the audio receiving device that is currently not connected to the audio sending device via Bluetooth in a two-way manner. The non-target audio receiving device monitors the audio data transmitted from the audio sending device to the target audio receiving device through a preset monitoring technology. The preset monitoring technology includes: TrueWireless Mirroring (true wireless mirroring) technology or MCSync (binaural transmission) technology or other private monitoring technology. When the target audio receiving device is a Base, the non-target audio receiving device is a headset, and the audio sending device is a mobile phone, the headset monitors the audio data transmitted from the mobile phone to the Base through the preset monitoring technology; when the target audio receiving device is a headset, the non-target audio receiving device is a Base, and the audio sending device is a mobile phone, the Base monitors the audio data transmitted from the mobile phone to the headset through the preset monitoring technology.

[0064] In a preferred embodiment of the present invention, an audio transmitting device and a target audio receiving device perform audio transmission via a Bluetooth bidirectional connection. The audio data transmitted from the audio transmitting device to the target audio receiving device is monitored by a non-target audio receiving device. Connection information for the Bluetooth bidirectional connection between the target audio receiving device and the audio transmitting device is transmitted to the non-target audio receiving device via the Bluetooth connection between the target and non-target audio receiving devices. When the original target audio receiving device is replaced with a new non-target audio receiving device, and the original non-target audio receiving device is replaced with a new target audio receiving device, the audio transmitting device and the new target audio receiving device perform audio transmission via the Bluetooth bidirectional connection, i.e., the data transmitted by the audio transmitting device is acknowledged by the new target audio receiving device. When the two audio receiving devices are a base and a headset, and the audio transmitting device is a mobile phone, the mobile phone and the base perform audio transmission via a Bluetooth bidirectional connection, and the audio data transmitted from the mobile phone to the base is monitored by the headset. When a switching operation occurs, the mobile phone and the headset perform audio transmission via the Bluetooth bidirectional connection, and the audio data transmitted from the mobile phone to the headset is monitored by the base.

[0065] In a preferred embodiment of the present invention, in the connection mode of FIG7 , the Base establishes a BREDR Bluetooth bidirectional connection with the mobile phone, and the Base establishes a BREDR Bluetooth bidirectional connection with the headset. The Base has a Bluetooth chip, and the headset also has a Bluetooth chip. In this connection mode, the Base communicates with the mobile phone for data transmission. The headset monitors information sent by the mobile phone to the Base via monitoring path 1 (dashed path in FIG7 ). The headset also receives connection information of the Base and the mobile phone via the BREDR Bluetooth connection synchronized with the Base. When the user needs to switch to the connection mode of FIG8 (needs to switch the Base to play mobile phone audio and make and receive calls on the headset), the user operates on the Base or the headset to trigger a mode switch on the Base or the headset. The Base and the headset then communicate with each other to transmit an audio switching instruction. This audio switching instruction simply negotiates who is the agent. The device that switches to the agent will respond to the mobile phone's message. The Base and the headset transmit the audio switching instruction to the other side based on which side triggers the mode switch operation. The communication negotiated between the Base and the headset can be of any form. The Base and the headset determine who will respond to the mobile phone's message based on whether the mode switch operation is switched to audio transmission mode or monitoring mode (monitoring mode). In this example, the phone itself doesn't receive the audio switching command. From the phone's perspective, it's unaware of the Base and the headset. Externally, the Base and the headset appear to be one device, and the phone doesn't know whether the Base or the headset received the message. At this point, the headset responds to the phone's message, but the Base doesn't. The headset and phone establish a BREDR Bluetooth bidirectional connection. The Base monitors information sent by the phone to the headset via monitoring path 2 (the dotted path in Figure 8). The Base also receives connection information synchronized with the headset's BREDR Bluetooth connection, effectively switching from the connection mode shown in Figure 7 to the connection mode shown in Figure 8. The phone actually sends data over the air in the form of Bluetooth packets, which can be received by any device within range. The Partner and Agent have previously paired with the phone, and both have the relevant pairing information. Therefore, only the Partner and Agent can parse the data sent by the phone, preventing unpaired devices from accidentally connecting or stealing information. In the connection mode of Figure 7, the Agent is the Base, which can obtain the data sent by the mobile phone through the BREDR Bluetooth two-way connection established with the mobile phone. The headset acts as a Partner and clones an Agent at the headset through TrueWireless Mirroring technology, MCSync technology or other private monitoring technology (in fact, the Base is the Agent, and all the information of the two-way Bluetooth connection between the Agent and the mobile phone is copied at the headset).The information that can be received by the Agent can also be received by the Partner, but the Partner cannot send any information.

[0066] Preferably, the switching logic between different scenarios in a single call is shown in Figure 9. When the Base is in a call or music connection with a mobile phone, the audio channel is controlled in the Base to switch to the headphones. At this time, the Base switches to the Partner and notifies the headphones to switch to the Agent, and the call or music connection between the headphones and the mobile phone is switched. When the headphones are in a call or music connection with the mobile phone, the audio channel is controlled in the Base to switch to the Base. At this time, the Base switches to the Agent and notifies the headphones to switch to the Partner, and the call or music connection between the Base and the mobile phone is switched. The Agent establishes an actual two-way Bluetooth connection with the mobile phone, and the Partner only monitors the data communicated between the Agent and the mobile phone. The Base and the headphones are connected via BREDR, BLE, or BREDR + BLE. The BREDR connection is used to synchronize role management, channel selection, and other link management information with the headphones, while the BLE connection can be used to transmit audio control commands and data. The connections between the Base and the headphones, the Base and the mobile phone, and the headphones and the mobile phone use time division multiplexing to minimize interference between the BREDR and BLE connections.

[0067] In an optional embodiment of the present invention, the target audio receiving device will synchronize the connection information of the Bluetooth two-way connection between it and the audio sending device to the non-target audio receiving device. The non-target audio receiving device monitors the information (including audio data and other data) transmitted by the audio sending device to the target audio receiving device, and receives the connection information of the Bluetooth two-way connection between the target audio receiving device and the audio sending device through the Bluetooth connection. The connection information is not all the information between the target audio receiving device and the audio sending device, but some useful information, such as frequency hopping information, entering and exiting sniff mode, etc. (sniff mode is a power consumption management mode in Bluetooth technology). The specific useful information needs to be defined according to the specific implementation of the connection switching scenario. The connection information received by the non-target audio receiving device is used to ensure the synchronization of the communication time slots at both ends of the audio transceiver device, and the information transmitted by the audio sending device to the target audio receiving device is used to ensure that the switched audio receiving device can immediately play the correct audio when switching the audio channel. In the implementation of the prior art of Figures 3-6, as shown in Figure 3, a Bluetooth chip is used on the Base, and Bluetooth connections are established between the Base, the headset, and the mobile phone. When the mobile phone has a call or music playing, if the eSCO / A2DP is connected to the Base at this time and the user also needs to use the Base, the status quo is maintained; if the eSCO / A2DP is connected to the Base at this time, but the user needs to use the headset, the Base will disconnect the eSCO / A2DP connection with the mobile phone (disconnect the audio connection), and then the Base sends a private notification command to the headset. After receiving the private notification command, the headset will actively establish an eSCO / A2DP connection with the mobile phone (create an audio connection), as shown in Figure 4, switching the current audio playback device to the headset; conversely, when the eSCO / A2DP is connected to the headset at the beginning, the operation is similar. As shown in Figure 5, a Bluetooth chip is used on the Base, and the Base is connected to the headset and the mobile phone at the same time. When the mobile phone is on a call or playing music, if the eSCO / A2DP is connected to the Base at this time and the user also needs to use the Base, the status quo will be maintained; if the eSCO / A2DP is connected to the Base at this time, but the user needs to use the headset, the Base will establish an eSCO / A2DP connection with the headset, and then forward the audio to the headset (if it is a call, the audio data received from the headset will also be forwarded to the mobile phone), as shown in Figure 6, switching the current audio playback device to the headset; conversely, the headset can also be used to connect to the Base and the mobile phone at the same time, with similar operations.The switching methods in Figures 3 and 4 require establishing and disconnecting the eSCO / A2DP connection (audio connection) when switching channels. Due to the influence of the Bluetooth implementation method of the mobile phone, it is easy to cause problems such as long switching time and lag. The switching methods in Figures 5 and 6 have extremely high requirements for the Bluetooth chip. Currently, most Bluetooth chips on the market cannot achieve effective communication of two eSCO / A2DP channels at the same time. The Base needs to forward the audio to the headphones, which will result in a large delay between the mobile phone playback and the user actually hearing the sound (the delay time is mainly the time it takes for the Base to forward the audio to the headphones). The audio switching methods of Figures 7 and 8 do not require first disconnecting the audio connection and then forwarding the command, and then establishing the audio connection after receiving the command, nor do they require forwarding audio. When it is necessary to switch from the Base to the headphones to play audio, this solution can synchronize the communication between the headphones and the mobile phone to the Base through monitoring and the Bluetooth two-way connection between the headphones and the Base, thereby realizing the function of freely switching between calls and music between the Base, headphones and mobile phone, and using a Bluetooth chip on the Base can eliminate the delay caused by the audio switching process; at the same time, there is no need to disconnect first and then forward the private notification command before establishing the connection, so there will be no abnormal disconnection or connection failure between the Base and the mobile phone, or the headphones and the mobile phone; there is no need to forward audio data, and there is no need to establish two audio communication connections on the Base, so there is no problem of unstable connection, easy disconnection and shortened communication distance when forwarding audio data, and thus there will be no increase in data communication packet loss.

[0068] The present invention provides an audio switching system comprising at least two audio receiving devices and one audio sending device, wherein the target audio receiving device is the audio receiving device that is currently connected to the audio sending device in a two-way Bluetooth manner, and the non-target audio receiving device is the audio receiving device that is currently not connected to the audio sending device in a two-way Bluetooth manner, the non-target audio receiving device monitors the audio data transmitted from the audio sending device to the target audio receiving device through a preset monitoring technology, and receives connection information of the Bluetooth two-way connection between the target audio receiving device and the audio sending device through a Bluetooth connection, and when only one Bluetooth chip is used on the non-target audio receiving device, the number of Bluetooth connections between the audio receiving device and the audio sending device is simplified, and without relying on the compatibility of the audio sending device and the performance of the Bluetooth chip, it can meet the requirements of the target audio receiving device and the non-target audio receiving device. The target audio receiving device receives the data of the audio sending device at the same time, and the connection information between the target audio receiving device and the audio sending device can be synchronized to the non-target audio receiving device, so that at least two audio receiving devices can receive the data of the audio sending device at the same time, and arbitrary switching and control of calls and music between the audio receiving device and the audio sending device are achieved. The communication time slots at both ends of the audio receiving device and the audio sending device are synchronized, and there is no delay in the switching process; at the same time, there is no need to disconnect first and then forward the private notification instruction and then establish a connection, so there is no disconnection abnormality or connection failure; there is no need to forward audio data and no need to establish two-way audio communication connections, so there is no problem of unstable connection, easy disconnection and shortened communication distance when forwarding audio data, and thus there will be no increase in data communication packet loss.

[0069] 2 is a flow chart of an audio switching method provided by an embodiment of the present invention, which is applicable to a target audio receiving device in an audio switching system. The audio switching method includes:

[0070] When an audio switching operation is detected, an audio switching instruction is generated and transmitted to a non-target audio receiving device, so that the non-target audio receiving device is changed to a new target audio receiving device and performs audio transmission with the audio sending device via a Bluetooth two-way connection;

[0071] Changing to a new non-target audio receiving device and switching to monitoring mode, monitoring audio data transmitted from the audio sending device to the new target audio receiving device using a preset monitoring technology; and

[0072] The connection information of the new target audio receiving device and the audio sending device for a Bluetooth two-way connection is received via the Bluetooth connection.

[0073] Preferably, upon receiving an audio switching instruction transmitted by a non-target audio receiving device, the device is changed to a new non-target audio receiving device and switched to a monitoring mode, and audio data transmitted from the audio sending device to the new target audio receiving device is monitored by a preset monitoring technology;

[0074] Receiving, via Bluetooth connection, connection information for a new target audio receiving device to establish a Bluetooth bidirectional connection with the audio sending device;

[0075] When the non-target audio receiving device detects the audio switching operation, it changes to a new target audio receiving device, generates the audio switching instruction, and performs audio transmission with the audio sending device via a Bluetooth two-way connection.

[0076] Specifically, the method includes at least two audio receiving devices and one audio sending device, and when one audio receiving device is respectively connected to another audio receiving device and an audio sending device via Bluetooth bidirectional connection: the target audio receiving device and the audio sending device perform audio transmission via Bluetooth bidirectional connection; wherein, the target audio receiving device is the audio receiving device that is currently connected to the audio sending device via Bluetooth bidirectional connection; the non-target audio receiving device monitors the audio data transmitted to the target audio receiving device by the audio sending device through a preset monitoring technology, and receives the connection information of the Bluetooth bidirectional connection between the target audio receiving device and the audio sending device via Bluetooth connection; wherein, the non-target audio receiving device is an audio receiving device that is not currently connected to the audio sending device via Bluetooth bidirectional connection. When the target audio receiving device detects an audio switching operation, it generates an audio switching instruction and transmits the audio switching instruction to the non-target audio receiving device, so that the non-target audio receiving device is changed to a new target audio receiving device and performs audio transmission with the audio sending device via a Bluetooth two-way connection; at the same time, the original target audio receiving device is changed to a new non-target audio receiving device and switches to monitoring mode, and monitors the audio data transmitted from the audio sending device to the new target audio receiving device through a preset monitoring technology; and receives the connection information of the Bluetooth two-way connection between the new target audio receiving device and the audio sending device via a Bluetooth connection. When the target audio receiving device is a Base, the non-target audio receiving device is a headset, and the audio sending device is a mobile phone, when the Base detects an audio switching operation, it generates an audio switching instruction and transmits the audio switching instruction to the headset, so that the headset performs audio transmission with the mobile phone via a Bluetooth two-way connection; at the same time, the Base switches to monitoring mode, and monitors the audio data transmitted from the mobile phone to the headset through a preset monitoring technology; and receives the connection information of the Bluetooth two-way connection between the headset and the mobile phone via a Bluetooth connection. When the target audio receiving device is a headset, the non-target audio receiving device is a Base, and the audio sending device is a mobile phone, the headset generates an audio switching instruction and transmits the audio switching instruction to the Base when detecting the audio switching operation, so that the Base can transmit audio with the mobile phone through a Bluetooth two-way connection; at the same time, the headset switches to monitoring mode and monitors the audio data transmitted from the mobile phone to the Base through a preset monitoring technology; and receives the connection information of the Bluetooth two-way connection between the Base and the mobile phone through the Bluetooth connection.

[0077] Preferably, when the target audio receiving device receives the audio switching instruction transmitted by the non-target audio receiving device, it changes to a new non-target audio receiving device and switches to the monitoring mode, and monitors the audio data transmitted by the audio sending device to the new target audio receiving device through a preset monitoring technology; at the same time, the original target audio receiving device receives the connection information of the new target audio receiving device and the audio sending device through a Bluetooth connection; wherein, when the non-target audio receiving device detects the audio switching operation, it changes to the new target audio receiving device, generates the audio switching instruction, and performs audio transmission with the audio sending device through the Bluetooth two-way connection. When the target audio receiving device is a Base, the non-target audio receiving device is a headset, and the audio sending device is a mobile phone, the Base switches to monitoring mode upon receiving the audio switching instruction transmitted by the headset, and monitors the audio data transmitted from the mobile phone to the headset using a preset monitoring technology; at the same time, the Base receives connection information of a Bluetooth two-way connection between the headset and the mobile phone via a Bluetooth connection; preferably, the Base receives connection information of a Bluetooth two-way connection between the headset and the mobile phone forwarded by the headset via a Bluetooth connection established with the headset; wherein, upon detecting an audio switching operation, the headset generates the audio switching instruction and performs audio transmission with the mobile phone via a Bluetooth two-way connection. When the target audio receiving device is a headset, the non-target audio receiving device is a Base, and the audio sending device is a mobile phone, the headset switches to monitoring mode upon receiving the audio switching instruction transmitted by the Base, and monitors the audio data transmitted from the mobile phone to the Base using a preset monitoring technology; at the same time, the headset receives connection information of a Bluetooth two-way connection between the Base and the mobile phone via a Bluetooth connection; wherein, upon detecting an audio switching operation, the Base generates the audio switching instruction and performs audio transmission with the mobile phone via a Bluetooth two-way connection.

[0078] Illustratively, the non-target audio receiving device monitors the audio data transmitted from the audio transmitting device to the target audio receiving device using a pre-defined monitoring technology. The pre-defined monitoring technology includes TrueWireless Mirroring (True Wireless Mirroring) technology, MCSync (Binaural Transmission), or other proprietary monitoring technologies. When the target audio receiving device is a Base, the non-target audio receiving device is a headset, and the audio transmitting device is a mobile phone, the headset monitors the audio data transmitted from the mobile phone to the Base using the pre-defined monitoring technology. When the target audio receiving device is a headset, the non-target audio receiving device is a Base, and the audio transmitting device is a mobile phone, the Base monitors the audio data transmitted from the mobile phone to the headset using the pre-defined monitoring technology.

[0079] Schematically, an audio receiving device is connected to another audio receiving device and an audio transmitting device via Bluetooth. The connection modes of the Bluetooth bidirectional connection include any of the following and their combinations: BREDR connection (traditional Bluetooth connection) and BLE connection (Bluetooth low energy connection). When the audio receiving devices are a base and headphones, and the audio transmitting device is a mobile phone, the connection mode between the base and the mobile phone can be BREDR connection, BLE connection, or BREDR connection + BLE connection. The connection mode between the base and the headphones can be BREDR connection, BLE connection, or BREDR connection + BLE connection. The connection mode between the headphones and the mobile phone can be BREDR connection, BLE connection, or BREDR connection + BLE connection.

[0080] In a preferred embodiment of the present invention, an audio transmitting device and a target audio receiving device perform audio transmission via a Bluetooth bidirectional connection. The audio data transmitted from the audio transmitting device to the target audio receiving device is monitored by a non-target audio receiving device. Connection information for the Bluetooth bidirectional connection between the target audio receiving device and the audio transmitting device is transmitted to the non-target audio receiving device via the Bluetooth connection between the target and non-target audio receiving devices. When the original target audio receiving device is replaced with a new non-target audio receiving device, and the original non-target audio receiving device is replaced with a new target audio receiving device, the audio transmitting device and the new target audio receiving device perform audio transmission via the Bluetooth bidirectional connection, i.e., the data transmitted by the audio transmitting device is acknowledged by the new target audio receiving device. When the two audio receiving devices are a base and a headset, and the audio transmitting device is a mobile phone, the mobile phone and the base perform audio transmission via a Bluetooth bidirectional connection, and the audio data transmitted from the mobile phone to the base is monitored by the headset. When a switching operation occurs, the mobile phone and the headset perform audio transmission via the Bluetooth bidirectional connection, and the audio data transmitted from the mobile phone to the headset is monitored by the base.

[0081] The present invention provides an audio switching method applicable to an audio receiving device in an audio switching system, wherein the audio receiving device can be in either of two states: a target audio receiving device and a non-target audio receiving device. The target audio receiving device is an audio receiving device currently in a two-way Bluetooth connection with an audio transmitting device, and the non-target audio receiving device is an audio receiving device currently not in a two-way Bluetooth connection with the audio transmitting device. When the audio receiving device detects a user's audio switching operation, the audio receiving device switches the state of the audio receiving device to the other state, either the target audio receiving device or the non-target audio receiving device, which is different from the current state. The non-target audio receiving device monitors audio data transmitted from the audio sending device to the target audio receiving device using a preset monitoring technology, and receives connection information for a two-way Bluetooth connection between the target audio receiving device and the audio sending device via a Bluetooth connection. When only one Bluetooth chip is used on the non-target audio receiving device, the number of Bluetooth connections between the audio receiving device and the audio sending device is simplified. Without relying on the compatibility of the audio sending device and the performance of the Bluetooth chip, the target audio receiving device and the non-target audio receiving device can simultaneously receive data from the audio sending device. Moreover, the connection information between the target audio receiving device and the audio sending device can be synchronized to the non-target audio receiving device, thereby enabling at least two audio receiving devices to simultaneously receive data from the audio sending device, achieving arbitrary switching and control of calls and music between the audio receiving device and the audio sending device, and the switching process is not delayed. At the same time, there is no need to disconnect first, forward the private notification command, and then establish a connection, so there is no disconnection abnormality or connection failure. There is no need to forward audio data or establish two-way audio communication connections, so there is no problem of unstable connection, easy disconnection, or shortened communication distance during audio data forwarding, and thus no increase in data communication packet loss.

[0082] 10 is a schematic diagram illustrating the structure of an audio switching device according to an embodiment of the present invention, which is applicable to a target audio receiving device in an audio switching system, including:

[0083] The first switching module is configured to, upon detecting an audio switching operation, generate an audio switching instruction and transmit the audio switching instruction to a non-target audio receiving device, so that the non-target audio receiving device is changed to a new target audio receiving device and performs audio transmission with the audio sending device via a Bluetooth bidirectional connection;

[0084] The device monitoring module is used to change to a new non-target audio receiving device and switch to monitoring mode, and monitor the audio data transmitted from the audio sending device to the new target audio receiving device through a preset monitoring technology;

[0085] The first information synchronization module is configured to receive, via a Bluetooth connection, connection information for a new target audio receiving device to establish a Bluetooth bidirectional connection with the audio sending device.

[0086] Preferably, it also includes:

[0087] The second switching module is configured to, upon receiving an audio switching instruction transmitted by a non-target audio receiving device, change to a new non-target audio receiving device and switch to a monitoring mode, and monitor the audio data transmitted by the audio sending device to the new target audio receiving device through a preset monitoring technology;

[0088] A second information synchronization module is used to receive, via Bluetooth connection, connection information of a new target audio receiving device to establish a Bluetooth bidirectional connection with the audio sending device;

[0089] When the non-target audio receiving device detects the audio switching operation, it changes to a new target audio receiving device, generates the audio switching instruction, and performs audio transmission with the audio sending device via a Bluetooth two-way connection.

[0090] In a preferred embodiment of the present invention, when the target audio receiving device in the audio switching system detects an audio switching operation, it generates an audio switching instruction through the first switching module and transmits the audio switching instruction to the non-target audio receiving device, so that the non-target audio receiving device is changed to a new target audio receiving device and performs audio transmission with the audio sending device through a Bluetooth two-way connection; then it is changed to the new non-target audio receiving device through the device monitoring module and switches to the monitoring mode, and monitors the audio data transmitted from the audio sending device to the new target audio receiving device through a preset monitoring technology; finally, in the first information synchronization module, the connection information of the new target audio receiving device and the audio sending device for a Bluetooth two-way connection is received through the Bluetooth connection. By implementing this embodiment, there is no need to disconnect first and then forward the private notification instruction and then establish a connection, so there will be no abnormal disconnection or connection failure; there is no need to forward audio data and establish two-way audio communication connections, so there will be no unstable connection, easy disconnection and shortened communication distance when forwarding audio data, and thus there will be no increase in data communication packet loss; at the same time, it can meet the needs of the target audio receiving device and the non-target audio receiving device to receive the data of the audio sending device at the same time, and the connection information between the target audio receiving device and the audio sending device can be synchronized to the non-target audio receiving device, so that at least two audio receiving devices can receive the data of the audio sending device at the same time, and achieve arbitrary switching and control of calls and music between the audio receiving device and the audio sending device, and the communication time slots at both ends of the audio receiving device and the audio sending device are synchronized, and there is no delay in the switching process.

[0091] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An audio switching system, characterized in that, Including: At least two audio receiving devices and one audio transmitting device; When an audio receiving device is respectively in a Bluetooth two-way connection with another audio receiving device and an audio transmitting device, the audio receiving device includes either the target audio receiving device or the non-target audio receiving device, where: The target audio receiving device performs audio transmission with the audio transmitting device through Bluetooth two-way connection; among them, the target audio receiving device is the audio receiving device currently in a Bluetooth two-way connection with the audio transmitting device; The non-target audio receiving device monitors the audio data transmitted from the audio transmitting device to the target audio receiving device through a preset monitoring technology, and receives the connection information of the Bluetooth two-way connection between the target audio receiving device and the audio transmitting device through a Bluetooth connection; among them, the non-target audio receiving device is the audio receiving device currently not in a Bluetooth two-way connection with the audio transmitting device; When the audio receiving device detects an audio switching operation, it switches the state of the audio receiving device to another state different from the current state among the two states of the target audio receiving device or the non-target audio receiving device.

2. The audio switching system according to claim 1, wherein When the audio receiving device detects an audio switching operation, switching the state of the audio receiving device to another state different from the current state among the two states of the target audio receiving device or the non-target audio receiving device includes: Generating an audio switching instruction and transmitting the audio switching instruction to the non-target audio receiving device, so that the non-target audio receiving device changes to a new target audio receiving device and performs audio transmission with the audio transmitting device through Bluetooth two-way connection; Changing to a new non-target audio receiving device and switching to the monitoring mode, and monitoring the audio data transmitted from the audio transmitting device to the new target audio receiving device through a preset monitoring technology; and, Receiving the connection information of the Bluetooth two-way connection between the new target audio receiving device and the audio transmitting device through a Bluetooth connection.

3. An audio switching system according to claim 1, characterized in that, When an audio receiving device is respectively in a Bluetooth two-way connection with another audio receiving device and an audio transmitting device: The target audio receiving device is further configured to, when receiving the audio switching instruction transmitted by the non-target audio receiving device, change to a new non-target audio receiving device and switch to the monitoring mode, and monitor the audio data transmitted from the audio transmitting device to the new target audio receiving device through a preset monitoring technology; Receiving the connection information of the Bluetooth two-way connection between the new target audio receiving device and the audio transmitting device through a Bluetooth connection; Among them, when the non-target audio receiving device detects an audio switching operation, it changes to a new target audio receiving device, generates the audio switching instruction, and performs audio transmission with the audio transmitting device through Bluetooth two-way connection.

4. An audio switching system according to claim 1, characterized in that, The two audio receiving devices are respectively Base and headphones; the audio transmitting device is a mobile phone.

5. An audio switching system according to claim 1, characterized in that The preset monitoring technology includes: TrueWireless Mirroring technology or MCSync technology.

6. An audio switching system according to claim 1, characterized in that, The connection methods of the Bluetooth two-way connection include any one of the following and their combinations: BREDR connection and BLE connection.

7. An audio switching method, characterized in that, It is applicable to the target audio receiving device in the audio switching system described in any one of items 1-6; The audio switching method includes: When an audio switching operation is detected, generating an audio switching instruction and transmitting the audio switching instruction to the non-target audio receiving device, so that the non-target audio receiving device changes to a new target audio receiving device and performs audio transmission with the audio transmitting device through a Bluetooth two-way connection; Changing to a new non-target audio receiving device and switching to the listening mode, and listening to the audio data transmitted by the audio transmitting device to the new target audio receiving device through a preset listening technology; and Receiving the connection information of the new target audio receiving device and the audio transmitting device for Bluetooth two-way connection through a Bluetooth connection.

8. The audio switching method according to claim 7, wherein It also includes: When receiving the audio switching instruction transmitted by the non-target audio receiving device, changing to a new non-target audio receiving device and switching to the listening mode, and listening to the audio data transmitted by the audio transmitting device to the new target audio receiving device through a preset listening technology; Receiving the connection information of the new target audio receiving device and the audio transmitting device for Bluetooth two-way connection through a Bluetooth connection; Wherein, when the non-target audio receiving device detects an audio switching operation, it changes to a new target audio receiving device, generates the audio switching instruction, and performs audio transmission with the audio transmitting device through a Bluetooth two-way connection.

9. The audio switching method according to claim 7, characterized in that, The preset listening technology includes: TrueWireless Mirroring technology or MCSync technology.

10. An audio switching method according to claim 7, characterized in that, The connection methods of the Bluetooth two-way connection include any one of the following and their combinations: BREDR connection and BLE connection.

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