CN110177363B - Bluetooth data transmission method and device, Bluetooth chip and storage medium - Google Patents
Bluetooth data transmission method and device, Bluetooth chip and storage medium Download PDFInfo
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- CN110177363B CN110177363B CN201910449959.6A CN201910449959A CN110177363B CN 110177363 B CN110177363 B CN 110177363B CN 201910449959 A CN201910449959 A CN 201910449959A CN 110177363 B CN110177363 B CN 110177363B
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/26—Speech to text systems
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
- G10L2015/223—Execution procedure of a spoken command
Abstract
The invention discloses a Bluetooth data transmission method, a Bluetooth data transmission device, a Bluetooth chip and a storage medium. The method is applied to a Bluetooth device, the Bluetooth device comprises a Bluetooth chip, and the method comprises the following steps: establishing a first protocol connection and a second protocol connection between the terminal equipment and the Bluetooth chip; when the Bluetooth equipment is confirmed to enter the awakening recognition state, acquiring voice data to be recognized, and compressing the voice data to be recognized according to a compression multiple negotiated in advance; sending the compressed voice data to be recognized to terminal equipment based on first protocol connection; the voice data to be recognized is used for indicating the terminal equipment to acquire the recognized voice data; and receiving the recognized voice data returned by the terminal equipment based on the second protocol connection. The method can greatly improve the bidirectional transmission rate of the Bluetooth, so that the Bluetooth equipment is more abundantly and flexibly applied to the aspect of voice interaction audio signal transmission, and the user experience in the aspect of Bluetooth voice interaction can be greatly improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a bluetooth data transmission method and apparatus, a bluetooth chip, and a storage medium.
Background
In the current bluetooth protocol, the total average uplink and downlink data transmission bandwidth is 768kbps (where kbps is also called bit rate and refers to the transmission rate of digital signals), the downlink is generally transmitted by using standard A2DP (Advanced Audio Distribution Profile, bluetooth Audio transmission model protocol), and the average data transmission bandwidth is 384 kbps; when the downlink A2DP plays, the uplink can only adopt BLE (Bluetooth Low Energy technology) to transmit data, and the transmission rate is only 16 kbps; while BLE carries out uplink data transmission, the A2DP module will reduce the data transmission rate to ensure the stability of Bluetooth communication.
Another protocol for simultaneous uplink and downlink transmission is HFP (bluetooth Hands-free Profile), which HFP protocol can be used for transmission of call data, has relatively low requirement on the sound quality of audio, and only supports 16kbps and 8 kbps.
The current bluetooth bidirectional transmission protocol has the technical problems that: (1) when the BLE protocol is adopted for uplink data transmission, the uplink voice transmission rate is only 16kbps, and the requirement of voice interaction real-time performance cannot be met; since the total average data transmission bandwidth of the uplink and the downlink is fixed, when the uplink voice transmission rate is increased, the downlink transmission rate is affected, so that the uplink high-rate transmission is not supported while the downlink high-rate data transmission is caused; (2) when the HFP protocol is adopted to realize the bluetooth bidirectional transmission, the HFP protocol only supports the transmission of the call data, and the uplink and downlink transmission rates are only 16kbps, so the real-time requirement of voice interaction cannot be met, and the downlink content playing quality can be influenced.
Disclosure of Invention
The object of the present invention is to solve at least to some extent one of the above mentioned technical problems.
To this end, a first object of the present invention is to propose a bluetooth data transmission method. The method can greatly improve the bidirectional transmission rate of the Bluetooth, so that the Bluetooth equipment is more abundantly and flexibly applied to the aspect of voice interaction audio signal transmission, and the user experience in the aspect of Bluetooth voice interaction can be greatly improved.
The second purpose of the invention is to provide a bluetooth data transmission device.
The third purpose of the invention is to provide a bluetooth chip.
A fourth object of the invention is to propose a computer-readable storage medium.
In order to achieve the above object, a bluetooth data transmission method provided in an embodiment of a first aspect of the present invention is applied to a bluetooth device, where the bluetooth device includes a bluetooth chip, and the method includes: establishing a first protocol connection and a second protocol connection between the terminal equipment and the Bluetooth chip; when the Bluetooth equipment is confirmed to enter the awakening recognition state, acquiring voice data to be recognized, and compressing the voice data to be recognized according to a compression multiple negotiated in advance; sending the compressed voice data to be recognized to the terminal equipment based on the first protocol connection; the voice data to be recognized is used for indicating the terminal equipment to acquire recognized voice data; and receiving the recognized voice data returned by the terminal equipment based on the second protocol connection.
According to the Bluetooth data transmission method, the first protocol connection and the second protocol connection between the terminal equipment and the Bluetooth chip can be established through the Bluetooth equipment, when the Bluetooth equipment is confirmed to enter the awakening recognition state, the voice data to be recognized is obtained, the voice data to be recognized is compressed according to the pre-negotiated compression multiple, the compressed voice data to be recognized is sent to the terminal equipment based on the first protocol connection, the terminal equipment can recognize the voice data to be recognized by adopting a voice recognition technology to obtain recognized voice data, the recognized voice data is returned to the Bluetooth equipment based on the second protocol connection, and therefore the Bluetooth equipment can obtain the recognized voice data returned by the terminal equipment, and voice recognition and interaction functions between the Bluetooth equipment and the terminal equipment are achieved. The first protocol connection can support the transmission of voice interaction audio signals between the Bluetooth equipment and other equipment, and when the Bluetooth equipment transmits voice data with other equipment, the first protocol connection can negotiate with the terminal equipment for compression times when transmitting data, and the compression of the voice audio data is realized by dynamically negotiating for compression data, so that the maximum data transmission quantity can be ensured under the current environment, the bidirectional high-speed transmission function of the Bluetooth voice data is greatly improved, the application of the Bluetooth in the aspect of voice interaction audio signal transmission is richer and more flexible, and audio transmission instructions, data transmission speed and data transmission speed in the aspect of Bluetooth voice interaction can be improved, Speech recognition rate and speech interaction real-time.
According to one embodiment of the invention, the bluetooth chip comprises a first protocol module and a second protocol module; wherein, the establishing of the first protocol connection and the second protocol connection of the terminal device and the Bluetooth chip comprises: establishing a first protocol connection between the terminal equipment and a Bluetooth chip through the first protocol module; and establishing a second protocol connection between the terminal equipment and the Bluetooth chip through the second protocol module.
According to one embodiment of the invention, the first protocol module is a private protocol RMP protocol module; the second protocol module is a standard A2DP protocol module.
According to one embodiment of the invention, the first protocol module is arranged between a serial cable emulation protocol (RFCOMM) layer and an Application layer in the Bluetooth chip.
According to an embodiment of the present invention, compressing the voice data to be recognized according to a pre-negotiated compression multiple includes: detecting the quality of an environment Bluetooth channel of the Bluetooth device and a signal of the Bluetooth chip; negotiating a compression multiple with the terminal equipment according to the detected quality of the environment Bluetooth channel and the signal of the Bluetooth chip; and compressing the voice data to be recognized according to the negotiated compression multiple.
In order to achieve the above object, a bluetooth data transmission device according to an embodiment of a second aspect of the present invention includes: the connection establishing module is used for establishing a first protocol connection and a second protocol connection between the terminal equipment and the Bluetooth chip; the voice data processing module is used for acquiring voice data to be recognized when the Bluetooth device is determined to enter the awakening recognition state, and compressing the voice data to be recognized according to a pre-negotiated compression multiple; the voice data uploading module is used for sending the compressed voice data to be recognized to the terminal equipment based on the first protocol connection; the voice data to be recognized is used for indicating the terminal equipment to acquire recognized voice data; and the identification data receiving module is used for receiving the identified voice data returned by the terminal equipment based on the second protocol connection.
The Bluetooth data transmission device of the embodiment of the invention can establish the first protocol connection and the second protocol connection between the terminal equipment and the Bluetooth chip through the connection establishment module, the voice data processing module acquires the voice data to be recognized when the Bluetooth equipment is confirmed to enter the awakening recognition state, and compresses the voice data to be recognized according to a pre-negotiated compression multiple (such as 4 times), the voice data uploading module sends the compressed voice data to be recognized to the terminal equipment based on the first protocol connection, the terminal equipment can recognize the voice data to be recognized by adopting a voice recognition technology to obtain recognized voice data and returns the recognized voice data to the Bluetooth equipment based on the second protocol connection, therefore, the recognition data receiving module can obtain the recognized voice data returned by the terminal equipment, and the voice recognition and interaction functions between the Bluetooth equipment and the terminal equipment are realized. The first protocol connection can support the transmission of voice interaction audio signals between the Bluetooth equipment and other equipment, and when the Bluetooth equipment transmits voice data with other equipment, the first protocol connection can negotiate with the terminal equipment for compression times when transmitting data, and the compression of the voice audio data is realized by dynamically negotiating for compression data, so that the maximum data transmission quantity can be ensured under the current environment, the bidirectional high-speed transmission function of the Bluetooth voice data is greatly improved, the application of the Bluetooth in the aspect of voice interaction audio signal transmission is richer and more flexible, and audio transmission instructions, data transmission speed and data transmission speed in the aspect of Bluetooth voice interaction can be improved, Speech recognition rate and speech interaction real-time.
According to one embodiment of the invention, the bluetooth chip comprises a first protocol module and a second protocol module; wherein the connection establishing module is specifically configured to: establishing a first protocol connection between the terminal equipment and a Bluetooth chip through the first protocol module; and establishing a second protocol connection between the terminal equipment and the Bluetooth chip through the second protocol module.
According to one embodiment of the invention, the first protocol module is a private protocol RMP protocol module; the second protocol module is a standard A2DP protocol module.
According to one embodiment of the invention, the first protocol module is arranged between a serial cable emulation protocol (RFCOMM) layer and an Application layer in the Bluetooth chip.
According to an embodiment of the present invention, the voice data processing module is specifically configured to: detecting the quality of an environment Bluetooth channel of the Bluetooth device and a signal of the Bluetooth chip; negotiating a compression multiple with the terminal equipment according to the detected quality of the environment Bluetooth channel and the signal of the Bluetooth chip; and compressing the voice data to be recognized according to the negotiated compression multiple.
In order to achieve the above object, a bluetooth chip according to a third embodiment of the present invention includes: the first protocol module is used for establishing first protocol connection between the terminal equipment and the Bluetooth chip; the second protocol module is used for establishing second protocol connection between the terminal equipment and the Bluetooth chip; the voice data to be recognized acquisition module is used for acquiring the voice data to be recognized when the first protocol module is confirmed to enter the awakening recognition state; the first protocol module is further configured to compress the voice data to be recognized according to a compression multiple negotiated in advance, and send the compressed voice data to be recognized to the terminal device based on the first protocol connection; the voice data to be recognized is used for indicating the terminal equipment to acquire recognized voice data; the second protocol module is further configured to receive the recognized voice data returned by the terminal device based on the second protocol connection.
The Bluetooth chip of the embodiment of the invention can establish a first protocol connection between the terminal equipment and the Bluetooth chip through the first protocol module, the second protocol module establishes a second protocol connection between the terminal equipment and the Bluetooth chip, the voice data to be recognized is acquired through the voice data to be recognized acquisition module when the first protocol module is confirmed to enter the awakening recognition state, the voice data to be recognized is compressed through the first protocol module according to the pre-negotiated compression multiple, the compressed voice data to be recognized is sent to the terminal equipment based on the first protocol connection, the terminal equipment can recognize the voice data to be recognized by adopting the voice recognition technology to obtain the recognized voice data, and the recognized voice data is returned to the Bluetooth equipment based on the second protocol connection, so that the second protocol module can obtain the recognized voice data returned by the terminal equipment, therefore, the voice recognition and interaction functions between the Bluetooth device and the terminal device are realized. The first protocol connection can support the transmission of voice interaction audio signals between the Bluetooth chip and other equipment, and when the Bluetooth chip is in voice data transmission with other equipment, the first protocol connection can negotiate with the terminal equipment for compression times when transmitting data, and the voice data compression is realized by dynamically negotiating the compression data, so that the maximum data transmission quantity can be ensured under the current environment, the bidirectional high-speed transmission function of the Bluetooth voice data can be greatly improved, the application of the Bluetooth in the voice interaction audio signal transmission aspect is richer and more flexible, and audio transmission instructions, data transmission speed and the like in the Bluetooth voice interaction aspect can be improved, Speech recognition rate and speech interaction real-time.
According to one embodiment of the invention, the first protocol module is a private protocol RMP protocol module; the second protocol module is a standard A2DP protocol module.
According to one embodiment of the invention, the first protocol module is arranged between a serial cable emulation protocol (RFCOMM) layer and an Application layer in the Bluetooth chip.
According to an embodiment of the present invention, the first protocol module is further configured to enter a recognition response state and notify an audio output unit to output the recognized voice data when it is determined that the second protocol module receives the recognized voice data returned by the terminal device.
According to an embodiment of the present invention, the first protocol module is specifically configured to: detecting the quality of the environment Bluetooth channel of the Bluetooth device and the signal of the Bluetooth chip, negotiating with the terminal device about the compression multiple according to the detected quality of the environment Bluetooth channel and the signal of the Bluetooth chip, and compressing the voice data to be recognized according to the negotiated compression multiple.
To achieve the above object, a computer-readable storage medium according to a fourth embodiment of the present invention is provided, on which a computer program is stored, and the computer program, when executed by a processor, implements the bluetooth data transmission method according to the first embodiment of the present invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a bluetooth data transmission method according to one embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a design of a bluetooth protocol stack in a bluetooth chip according to an embodiment of the present invention;
fig. 3 is an exemplary diagram of a specific state switching of an RMP protocol module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a bluetooth data transmission apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a bluetooth chip according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A bluetooth data transmission method, apparatus, bluetooth chip, and computer-readable storage medium according to embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a bluetooth data transmission method according to one embodiment of the present invention. It should be noted that the bluetooth data transmission method according to the embodiment of the present invention may be applied to a bluetooth device, and the bluetooth device may include, but is not limited to, a bluetooth chip. As shown in fig. 1, the bluetooth data transmission method may include:
s110, establishing a first protocol connection and a second protocol connection between the terminal equipment and the Bluetooth chip.
In one embodiment of the present invention, the bluetooth chip may include, but is not limited to, a first protocol module and a second protocol module. In the embodiment of the invention, the first protocol connection between the terminal equipment and the Bluetooth chip can be established through the first protocol module in the Bluetooth chip, and the second protocol connection between the terminal equipment and the Bluetooth chip can be established through the second protocol module. As an example, the first protocol module is a private protocol RMP (Remote microphone Profile) protocol module; the second protocol module is a standard A2DP protocol module.
That is, the bluetooth device may establish a first protocol connection (e.g., a proprietary protocol RMP protocol) through a first protocol module in the bluetooth chip and a second protocol connection (e.g., a standard A2DP protocol) through a second protocol module, thereby implementing bluetooth bidirectional data transmission with the terminal device based on the first protocol connection and the second protocol connection. In the embodiment of the present invention, the bluetooth device may implement uplink data transmission in bluetooth bidirectional data transmission with a terminal device based on the first protocol connection; the bluetooth device may implement downlink data transmission in bluetooth bidirectional data transmission with the terminal device based on the second protocol connection.
It should be noted that, in an embodiment of the present invention, the terminal device may include, but is not limited to, a mobile terminal (e.g., a mobile phone, a tablet computer, a personal digital assistant, and other hardware devices with various operating systems), and a PC. The bluetooth device may include, but is not limited to, a bluetooth headset, a bluetooth speaker, and other devices that implement voice data transmission based on the bluetooth protocol, etc. For example, assuming that the terminal device is a mobile phone and the bluetooth device end is used as a center, the bluetooth bidirectional data transmission between the bluetooth device end and the mobile phone can be divided into uplink data transmission and downlink data transmission, where the uplink data transmission part is completed by a private protocol RMP protocol and the downlink data transmission part is completed by a standard A2DP protocol.
It should be noted that, in an embodiment of the present invention, the first protocol module may be disposed between the serial cable emulation protocol RFCOMM layer and the Application layer in the bluetooth chip. That is, the first protocol provided by the first protocol module can run between the serial cable emulation protocol RFCOMM layer and the Application layer in the bluetooth chip. For example, as shown in fig. 2, the bluetooth protocol stack of the bluetooth chip may include a BaseBand protocol (BaseBand), a Link Management Protocol (LMP), a logical link control and adaptation protocol (L2CAP), a serial cable emulation protocol (RFCOMM), a private protocol RMP protocol, and an Application layer protocol (Application), wherein the private protocol RMP protocol runs between the RFCOMM layer and the Application layer of the bluetooth chip.
And S120, when the Bluetooth device is confirmed to enter the awakening recognition state, acquiring voice data to be recognized, and compressing the voice data to be recognized according to the pre-negotiated compression multiple.
It should be noted that, in the embodiment of the present invention, when transmitting voice data through the first protocol connection (i.e. RMP protocol connection), the bluetooth device and the terminal device may negotiate a compression multiple, where the setting of the compression multiple is related to the quality of the bluetooth channel in the environment where the bluetooth device is located and the signal of the bluetooth chip, for example, a clean environment may set a low compression (e.g. 2 times, 4 times), and a noisy environment may set a high compression (e.g. 8 times, 16 times). Generally, the environment can be considered clean if only bluetooth is operating. If bluetooth and WiFi are working together and WiFi throughput is high, the two will interfere with each other, and the environment may be considered noisy. Specific noisy or clean is related to specific environment, and the specific compression multiple needs to be set by judging and debugging the use environment. It can be appreciated that the lower the compression factor, the better the recognition rate of the sound will perform.
For example, when the A2DP protocol connection, RMP protocol connection, and network link between the bluetooth device and the terminal device have been successfully established, it may be determined that the communication preparation between the bluetooth device and the terminal device is completed and the bluetooth device is idle waiting for wakeup. When the Bluetooth equipment is confirmed to enter the awakening recognition state, the voice data to be recognized can be obtained, the quality of the environment Bluetooth channel of the Bluetooth equipment and the signal of the Bluetooth chip can be detected, the compression multiple is negotiated with the terminal equipment according to the detected quality of the environment Bluetooth channel and the signal of the Bluetooth chip, and the voice data to be recognized is compressed according to the negotiated compression multiple.
In one embodiment of the present invention, whether the bluetooth device enters the wakeup identification state may be determined by: whether the microphone on the Bluetooth device collects the voice of people in the surrounding environment or not can be judged, if yes, the Bluetooth device can be controlled to enter a wakeup identification state, the audio data collected by the microphone can be obtained at the moment, the audio data is used as voice data to be identified, and the voice data to be identified is compressed according to the compression multiple negotiated in advance.
In another embodiment of the present invention, whether the bluetooth device enters the wakeup identification state may be determined by: the method can receive the audio collected by a microphone on the Bluetooth device, and judge whether the audio has a preset awakening word audio (such as an 'awakening' audio, a 'hello' audio, an 'opening' audio or a 'starting' audio) or not, if not, the Bluetooth device is controlled to continue to wait for awakening in an idle state; otherwise, controlling the Bluetooth equipment to enter a wakeup identification state, and at the moment, taking the audio data collected by the microphone as the voice data to be identified, and compressing the voice data to be identified according to the pre-negotiated compression multiple.
And S130, sending the compressed voice data to be recognized to the terminal equipment based on the first protocol connection. The voice data to be recognized is used for indicating the terminal equipment to acquire the recognized voice data.
That is, after compressing the voice data to be recognized, the compressed voice data to be recognized may be sent to the terminal device based on the first protocol connection, so as to implement transmission of uplink data of the bluetooth device. The voice data to be recognized is used for indicating the terminal equipment to acquire the recognized voice data.
And S140, receiving the recognized voice data returned by the terminal equipment based on the second protocol connection.
That is to say, after the bluetooth device sends the compressed voice data to be recognized to the terminal device based on the first protocol connection, the terminal device may recognize the voice data to be recognized by using a voice recognition technology to obtain recognized voice data, and return the recognized voice data to the bluetooth device based on the second protocol connection, so that the bluetooth device may obtain the recognized voice data returned by the terminal device, thereby implementing voice recognition and interaction functions between the bluetooth device and the terminal device.
It should be noted that, in the embodiment of the present invention, the RMP protocol module may be divided into two sub-modules, namely, an instruction transmission sub-module and a voice link sub-module. The command transmission submodule can be used for interrupt processing of equipment information interaction and voice awakening; the voice link sub-module can be used for stable voice data transmission, and when no data transmission exists for a long time, the link of RFCOMM (Bluetooth virtual Serial Port) and SPP (Serial Port Profile) is disconnected, and the RMP protocol module enters dormancy. The RMP protocol module may have multiple states, for example, the RMP protocol module may have an idle state, a wait for wakeup identification state, a wakeup identification state, and a busy state, and the specific state switching of the RMP protocol module may be as shown in fig. 3, where the idle state may represent an initialization state, and the application initialization is for establishing a connection; the waiting awakening identification state can indicate that the Bluetooth RMP protocol module, the A2DP protocol module and a network link are connected, the preparation work is completed, and the Bluetooth equipment is idle and waits to be awakened; the wakeup identification state may indicate that identification is started when a wakeup event is received, for example, voice data to be identified is received, the voice data to be identified is decoded, identification is responded, and a busy state is entered, and if a response of the terminal device is not received for a long time, a link is considered to be disconnected, and an idle state can be entered; the busy state can represent an identification response state, at which time the audio output unit of the bluetooth device is playing the sound after the response, and enters the wait wakeup state again after the identification is finished.
In summary, the RMP protocol according to the embodiment of the present invention may be distinguished between the existing BLE protocol and the HFP protocol by: the RMP protocol can support the transmission of voice interaction audio signals between the Bluetooth equipment and other equipment, and when voice data transmission is carried out with other equipment, the RMP protocol can negotiate compression multiples with the terminal equipment when the first protocol is connected and transmits data, the compression of the voice audio data is realized by dynamically negotiating the compression data, the maximum data transmission quantity can be ensured under the current environment, the uplink voice transmission rate of the Bluetooth equipment can be improved, the downlink data transmission rate of the Bluetooth equipment can be ensured at the same time, and the purpose of bidirectional high-speed transmission of the Bluetooth is achieved.
According to the Bluetooth data transmission method, the first protocol connection and the second protocol connection between the terminal equipment and the Bluetooth chip can be established through the Bluetooth equipment, when the Bluetooth equipment is confirmed to enter the awakening recognition state, the voice data to be recognized is obtained, the voice data to be recognized is compressed according to the pre-negotiated compression multiple, the compressed voice data to be recognized is sent to the terminal equipment based on the first protocol connection, the terminal equipment can recognize the voice data to be recognized by adopting a voice recognition technology to obtain recognized voice data, the recognized voice data is returned to the Bluetooth equipment based on the second protocol connection, and therefore the Bluetooth equipment can obtain the recognized voice data returned by the terminal equipment, and voice recognition and interaction functions between the Bluetooth equipment and the terminal equipment are achieved. The first protocol connection can support the transmission of voice interaction audio signals between the Bluetooth equipment and other equipment, and when the Bluetooth equipment transmits voice data with other equipment, the first protocol connection can negotiate with the terminal equipment for compression times when transmitting data, and the compression of the voice audio data is realized by dynamically negotiating for compression data, so that the maximum data transmission quantity can be ensured under the current environment, the bidirectional high-speed transmission function of the Bluetooth voice data is greatly improved, the application of the Bluetooth in the aspect of voice interaction audio signal transmission is richer and more flexible, and audio transmission instructions, data transmission speed and data transmission speed in the aspect of Bluetooth voice interaction can be improved, Speech recognition rate and speech interaction real-time.
Corresponding to the bluetooth data transmission methods provided in the foregoing embodiments, an embodiment of the present invention further provides a bluetooth data transmission apparatus, and since the bluetooth data transmission apparatus provided in the embodiment of the present invention corresponds to the bluetooth data transmission methods provided in the foregoing embodiments, the embodiments of the foregoing bluetooth data transmission method are also applicable to the bluetooth data transmission apparatus provided in this embodiment, and will not be described in detail in this embodiment. Fig. 4 is a schematic structural diagram of a bluetooth data transmission apparatus according to an embodiment of the present invention. As shown in fig. 4, the bluetooth data transmission apparatus 400 may include: a connection establishing module 410, a voice data processing module 420, a voice data uploading module 430 and a recognition data receiving module 440.
Specifically, the connection establishing module 410 is configured to establish a first protocol connection and a second protocol connection between the terminal device and the bluetooth chip. It should be noted that, in the embodiment of the present invention, the bluetooth chip includes a first protocol module and a second protocol module; the connection establishing module 410 is specifically configured to: establishing a first protocol connection between the terminal equipment and the Bluetooth chip through a first protocol module; and establishing a second protocol connection between the terminal equipment and the Bluetooth chip through a second protocol module.
In the embodiment of the present invention, the first protocol module is a private protocol RMP protocol module; the second protocol module is a standard A2DP protocol module. As an example, the first protocol module is arranged between a serial cable emulation protocol (RFCOMM) layer and an Application layer in the Bluetooth chip.
The voice data processing module 420 is configured to, when it is determined that the bluetooth device enters the wakeup identification state, acquire the voice data to be identified, and compress the voice data to be identified according to the compression multiple negotiated in advance. As an example, the voice data processing module 420 detects the quality of the bluetooth channel in the environment of the bluetooth device and the signal of the bluetooth chip, negotiates a compression multiple with the terminal device according to the detected quality of the bluetooth channel in the environment and the signal of the bluetooth chip, and compresses the voice data to be recognized according to the negotiated compression multiple.
The voice data uploading module 430 is configured to send the compressed voice data to be recognized to the terminal device based on the first protocol connection. The voice data to be recognized can be used for indicating the terminal equipment to acquire the recognized voice data.
The identification data receiving module 440 is configured to receive the identified voice data returned by the terminal device based on the second protocol connection.
The Bluetooth data transmission device of the embodiment of the invention can establish the first protocol connection and the second protocol connection between the terminal equipment and the Bluetooth chip through the connection establishment module, the voice data processing module acquires the voice data to be recognized when the Bluetooth equipment is confirmed to enter the awakening recognition state, and compresses the voice data to be recognized according to a pre-negotiated compression multiple (such as 4 times), the voice data uploading module sends the compressed voice data to be recognized to the terminal equipment based on the first protocol connection, the terminal equipment can recognize the voice data to be recognized by adopting a voice recognition technology to obtain recognized voice data and returns the recognized voice data to the Bluetooth equipment based on the second protocol connection, therefore, the recognition data receiving module can obtain the recognized voice data returned by the terminal equipment, and the voice recognition and interaction functions between the Bluetooth equipment and the terminal equipment are realized. The first protocol connection can support the transmission of voice interaction audio signals between the Bluetooth equipment and other equipment, and when the Bluetooth equipment transmits voice data with other equipment, the first protocol connection can negotiate with the terminal equipment for compression times when transmitting data, and the compression of the voice audio data is realized by dynamically negotiating for compression data, so that the maximum data transmission quantity can be ensured under the current environment, the bidirectional high-speed transmission function of the Bluetooth voice data is greatly improved, the application of the Bluetooth in the aspect of voice interaction audio signal transmission is richer and more flexible, and audio transmission instructions, data transmission speed and data transmission speed in the aspect of Bluetooth voice interaction can be improved, Speech recognition rate and speech interaction real-time.
In order to implement the above embodiment, the present invention further provides a bluetooth chip.
Corresponding to the bluetooth data transmission methods provided in the foregoing embodiments, an embodiment of the present invention further provides a bluetooth chip, and since the bluetooth chip provided in the embodiment of the present invention corresponds to the bluetooth data transmission methods provided in the foregoing embodiments, the implementation of the foregoing bluetooth data transmission method is also applicable to the bluetooth chip provided in this embodiment, and will not be described in detail in this embodiment. Fig. 5 is a schematic structural diagram of a bluetooth chip according to an embodiment of the present invention. As shown in fig. 5, the bluetooth chip 500 may include: a first protocol module 510, a second protocol module 520 and a to-be-recognized voice data acquisition module 530.
Specifically, the first protocol module 510 is configured to establish a first protocol connection between the terminal device and the bluetooth chip. In the embodiment of the present invention, the first protocol module 510 may be disposed between the serial cable emulation protocol RFCOMM layer and the Application layer in the bluetooth chip 500.
The second protocol module 520 is used for establishing a second protocol connection between the terminal device and the bluetooth chip.
The to-be-recognized voice data obtaining module 530 is configured to obtain the to-be-recognized voice data when it is determined that the first protocol module 510 enters the wakeup recognition state.
The first protocol module 510 is further configured to compress the voice data to be recognized according to a pre-negotiated compression multiple, and send the compressed voice data to be recognized to the terminal device based on the first protocol connection; the voice data to be recognized is used for indicating the terminal equipment to acquire the recognized voice data. As an example, the first protocol module 510 detects the quality of the bluetooth channel in the environment of the bluetooth device and the signal of the bluetooth chip, negotiates a compression multiple with the terminal device according to the detected quality of the bluetooth channel in the environment and the signal of the bluetooth chip, and compresses the voice data to be recognized according to the negotiated compression multiple.
The second protocol module 520 is further configured to receive the recognized voice data returned by the terminal device based on the second protocol connection.
In an embodiment of the present invention, the first protocol module 510 is further configured to enter a recognition response state and notify the audio output unit to output the recognized voice data when it is determined that the second protocol module 520 receives the recognized voice data returned by the terminal device. That is, the second protocol module 520 may notify the first protocol module 510 when receiving the recognized voice data returned by the terminal device based on the second protocol connection, so that the first protocol module 510 may enter a recognition response state and notify the audio output unit in the bluetooth device to output the recognized voice data, thereby implementing the voice recognition and interaction functions between the bluetooth device and the terminal device.
The Bluetooth chip of the embodiment of the invention can establish a first protocol connection between the terminal equipment and the Bluetooth chip through the first protocol module, the second protocol module establishes a second protocol connection between the terminal equipment and the Bluetooth chip, the voice data to be recognized is acquired through the voice data to be recognized acquisition module when the first protocol module is confirmed to enter the awakening recognition state, the voice data to be recognized is compressed through the first protocol module according to the pre-negotiated compression multiple, the compressed voice data to be recognized is sent to the terminal equipment based on the first protocol connection, the terminal equipment can recognize the voice data to be recognized by adopting the voice recognition technology to obtain the recognized voice data, and the recognized voice data is returned to the Bluetooth equipment based on the second protocol connection, so that the second protocol module can obtain the recognized voice data returned by the terminal equipment, therefore, the voice recognition and interaction functions between the Bluetooth device and the terminal device are realized. The first protocol connection can support the transmission of voice interaction audio signals between the Bluetooth chip and other equipment, and when the Bluetooth chip is in voice data transmission with other equipment, the first protocol connection can negotiate with the terminal equipment for compression times when transmitting data, and the voice data compression is realized by dynamically negotiating the compression data, so that the maximum data transmission quantity can be ensured under the current environment, the bidirectional high-speed transmission function of the Bluetooth voice data can be greatly improved, the application of the Bluetooth in the voice interaction audio signal transmission aspect is richer and more flexible, and audio transmission instructions, data transmission speed and the like in the Bluetooth voice interaction aspect can be improved, Speech recognition rate and speech interaction real-time.
In order to implement the above embodiments, the present invention further proposes a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the bluetooth data transmission method according to any of the above embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (12)
1. A Bluetooth data transmission method is applied to a Bluetooth device, the Bluetooth device comprises a Bluetooth chip, and the method is characterized by comprising the following steps:
establishing a first protocol connection and a second protocol connection between a terminal device and the Bluetooth chip, wherein the Bluetooth device realizes uplink data transmission in Bluetooth bidirectional transmission with the terminal device based on the first protocol connection, and the Bluetooth device realizes downlink data transmission in Bluetooth bidirectional transmission with the terminal device based on the second protocol connection;
when the Bluetooth equipment is confirmed to enter the awakening recognition state, acquiring voice data to be recognized, and compressing the voice data to be recognized according to a compression multiple negotiated in advance;
sending the compressed voice data to be recognized to the terminal equipment based on the first protocol connection; the voice data to be recognized is used for indicating the terminal equipment to acquire recognized voice data;
receiving the recognized voice data returned by the terminal equipment based on the second protocol connection;
wherein determining whether the Bluetooth device enters a wakeup identification state comprises:
receiving audio collected by a microphone on the Bluetooth equipment;
judging whether the collected audio contains awakening words or not;
if so, controlling the Bluetooth equipment to enter a wakeup identification state, taking the audio data collected by the microphone as the voice data to be identified, and executing the step of compressing the voice data to be identified according to the pre-negotiated compression multiple;
otherwise, controlling the Bluetooth equipment to continue to be idle and wait for awakening.
2. The method of claim 1, wherein the bluetooth chip comprises a first protocol module and a second protocol module; wherein, the establishing of the first protocol connection and the second protocol connection of the terminal device and the Bluetooth chip comprises:
establishing a first protocol connection between the terminal equipment and a Bluetooth chip through the first protocol module;
and establishing a second protocol connection between the terminal equipment and the Bluetooth chip through the second protocol module.
3. The method according to claim 1 or 2, characterized in that the first protocol module is a proprietary protocol RMP protocol module; the second protocol module is a standard A2DP protocol module.
4. The method as claimed in claim 2, wherein the first protocol module is disposed between a serial cable emulation protocol (RFCOMM) layer and an Application layer in the Bluetooth chip.
5. The method according to any one of claims 1 to 4, wherein compressing the voice data to be recognized according to a pre-negotiated compression multiple comprises:
detecting the quality of an environment Bluetooth channel of the Bluetooth device and a signal of the Bluetooth chip;
negotiating a compression multiple with the terminal equipment according to the detected quality of the environment Bluetooth channel and the signal of the Bluetooth chip;
and compressing the voice data to be recognized according to the negotiated compression multiple.
6. A Bluetooth data transmission device, wherein the Bluetooth data transmission device implements uplink data transmission in Bluetooth bidirectional transmission with a terminal device based on a first protocol connection, and implements downlink data transmission in Bluetooth bidirectional transmission with the terminal device based on a second protocol connection, the Bluetooth data transmission device comprising:
the connection establishing module is used for establishing a first protocol connection and a second protocol connection between the terminal equipment and the Bluetooth chip;
the voice data processing module is used for acquiring voice data to be recognized when the Bluetooth device is determined to enter the awakening recognition state, and compressing the voice data to be recognized according to a pre-negotiated compression multiple;
the voice data uploading module is used for sending the compressed voice data to be recognized to the terminal equipment based on the first protocol connection; the voice data to be recognized is used for indicating the terminal equipment to acquire recognized voice data;
the identification data receiving module is used for receiving the identified voice data returned by the terminal equipment based on the second protocol connection;
wherein determining whether the Bluetooth device enters a wakeup identification state comprises:
receiving audio collected by a microphone on the Bluetooth equipment;
judging whether the collected audio contains awakening words or not;
if so, controlling the Bluetooth equipment to enter a wakeup identification state, taking the audio data collected by the microphone as the voice data to be identified, and executing the step of compressing the voice data to be identified according to the pre-negotiated compression multiple;
otherwise, controlling the Bluetooth equipment to continue to be idle and wait for awakening.
7. The utility model provides a bluetooth chip, its characterized in that, bluetooth chip realize based on first agreement connect with terminal equipment's the ascending data transmission in the bluetooth bidirectional transfer, bluetooth chip realize based on the second agreement connect with terminal equipment's the descending data transmission in the bluetooth bidirectional transfer, bluetooth chip includes:
the first protocol module is used for establishing first protocol connection between the terminal equipment and the Bluetooth chip;
the second protocol module is used for establishing second protocol connection between the terminal equipment and the Bluetooth chip;
the voice data to be recognized acquisition module is used for acquiring the voice data to be recognized when the first protocol module is confirmed to enter the awakening recognition state;
the first protocol module is further configured to compress the voice data to be recognized according to a compression multiple negotiated in advance, and send the compressed voice data to be recognized to the terminal device based on the first protocol connection; the voice data to be recognized is used for indicating the terminal equipment to acquire recognized voice data;
the second protocol module is further configured to receive the recognized voice data returned by the terminal device based on the second protocol connection;
wherein determining whether the Bluetooth device enters a wakeup identification state comprises:
receiving audio collected by a microphone on the Bluetooth equipment;
judging whether the collected audio contains awakening words or not;
if so, controlling the Bluetooth equipment to enter a wakeup identification state, taking the audio data collected by the microphone as the voice data to be identified, and executing the step of compressing the voice data to be identified according to the pre-negotiated compression multiple;
otherwise, controlling the Bluetooth equipment to continue to be idle and wait for awakening.
8. The bluetooth chip according to claim 7, wherein the first protocol module is a private protocol RMP protocol module; the second protocol module is a standard A2DP protocol module.
9. The bluetooth chip according to claim 7 or 8, wherein the first protocol module is disposed between a serial cable emulation protocol RFCOMM layer and an Application layer in the bluetooth chip.
10. The bluetooth chip according to claim 7, wherein the first protocol module is further configured to enter a recognition response state and notify an audio output unit to output the recognized voice data when it is determined that the second protocol module receives the recognized voice data returned by the terminal device.
11. The bluetooth chip according to any one of claims 7 to 10, wherein the first protocol module is specifically configured to: detecting the quality of the environment Bluetooth channel of the Bluetooth device and the signal of the Bluetooth chip, negotiating with the terminal device about the compression multiple according to the detected quality of the environment Bluetooth channel and the signal of the Bluetooth chip, and compressing the voice data to be recognized according to the negotiated compression multiple.
12. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the bluetooth data transmission method according to one of claims 1 to 5.
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| CN111123766A (en) * | 2019-12-09 | 2020-05-08 | 重庆顺泰铁塔制造有限公司 | Bluetooth Mesh-based smart factory data acquisition method and system |
| CN111818493B (en) * | 2020-05-21 | 2023-11-07 | 上海橙群微电子有限公司 | Data transmission method, wireless network system, node, and readable storage medium |
| CN112423280A (en) * | 2020-10-27 | 2021-02-26 | 上海影创信息科技有限公司 | Wireless communication method, system and medium based on Bluetooth private protocol |
| CN114765761A (en) * | 2021-01-15 | 2022-07-19 | Oppo广东移动通信有限公司 | Audio data transmission method, electronic device and storage medium |
| CN113075381A (en) * | 2021-03-15 | 2021-07-06 | 华南理工大学 | Test system for simulating karst earthing collapse caused by subway vibration in karst area |
| CN117202259B (en) * | 2023-11-07 | 2024-02-06 | 深圳市丰禾原电子科技有限公司 | Data processing method and system of Bluetooth headset |
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