CN110662207B - High-quality music and voice transmission operation method based on Bluetooth - Google Patents
High-quality music and voice transmission operation method based on Bluetooth Download PDFInfo
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- CN110662207B CN110662207B CN201810705099.3A CN201810705099A CN110662207B CN 110662207 B CN110662207 B CN 110662207B CN 201810705099 A CN201810705099 A CN 201810705099A CN 110662207 B CN110662207 B CN 110662207B
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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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/26—Special purpose or proprietary protocols or architectures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
Abstract
The invention provides a high-quality music and voice transmission operation method based on Bluetooth, which not only obviously improves the sound quality obtained by a user, increases the interaction flexibility between music and voice, but also enhances the user experience by operating uplink or downlink audio frequencies under different protocols of Bluetooth in Bluetooth audio equipment.
Description
Technical Field
The invention belongs to the field of audio frequency, and particularly relates to a high-quality music and voice transmission operation method based on Bluetooth.
Background
Nowadays, there are various karaoke platforms and live broadcast platforms on various mobile terminals, and accordingly, various bluetooth audio devices are increasingly applied to these platforms, fig. 1 shows a typical application scenario, when a singer or webcast wears a bluetooth headset microphone or uses a bluetooth microphone with an inserted headset to sing or broadcasting directly, the singer or webcast often needs to listen to music from a mobile terminal and sing or speaking, and the voice of the singer or webcast is then transmitted back to the mobile terminal and recorded by the mobile terminal or transmitted to an external network, in this case, both the downstream music and the upstream voice use bluetooth HFP (handfree profile) protocol (bluetooth alliance sig (special Interest group) to define a plurality of bluetooth protocols including A2DP, HFP, AVRCP, etc.), there is no interaction between music and voice, meanwhile, the Bluetooth HFP protocol only supports audio transmission with a single sound track of 16KHz sampling rate at most, the sound quality is poor when the music is listened, the requirement of HiFi sound quality cannot be met, and the music experience effect of a singer or a main broadcast is poor.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a high-quality music and voice transmission operation method based on Bluetooth, and by operating uplink or downlink audio frequencies under different protocols of Bluetooth, the voice quality obtained by a user is obviously improved, the interaction flexibility between music and voice is increased, and the user experience is also enhanced.
The method comprises the steps of providing a first mobile terminal, wherein the first mobile terminal comprises a first Bluetooth module; providing a Bluetooth audio device, wherein the Bluetooth audio device comprises a second Bluetooth module, a loudspeaker and a microphone; establishing Bluetooth connection between a first mobile terminal and Bluetooth audio equipment; establishing a music transmission channel by using a Bluetooth A2DP protocol, sending a music signal to a Bluetooth audio device by a first mobile terminal, and replaying the music signal to a user by a loudspeaker; a microphone of the Bluetooth audio equipment receives user voice, a HFP (HFP protocol) is used for establishing a voice transmission channel, and the Bluetooth audio equipment sends a voice signal to the first mobile terminal; and the first mobile terminal receives the voice signal. After the music signal and the voice signal collected by the microphone are subjected to sound mixing in the Bluetooth audio equipment, the mixed sound signal is transmitted back to the first mobile terminal by using a transmission channel of an HFP protocol.
Further, it is proposed that the bluetooth audio device is connected to two mobile terminals simultaneously using a Multipoint method, and a music channel of A2DP protocol and a sound transmission channel of HFP protocol are respectively established between the bluetooth audio device and the two mobile terminals.
The first mobile terminal comprises a first Bluetooth module; providing a Bluetooth audio device, wherein the Bluetooth audio device comprises a second Bluetooth module, a loudspeaker and a microphone; establishing Bluetooth connection between a first mobile terminal and Bluetooth audio equipment; establishing a music transmission channel by using a Bluetooth A2DP protocol, sending a music signal to a Bluetooth audio device by a first mobile terminal, and replaying the music signal to a user by a loudspeaker; a microphone of the Bluetooth audio equipment receives user voice, a HFP (HFP protocol) is used for establishing a voice transmission channel, and the Bluetooth audio equipment sends a voice signal to the first mobile terminal; the first mobile terminal receives a request for communication of the audience, keeps a music transmission channel established under the A2DP protocol and a sound transmission channel established under the HFP protocol, establishes a bidirectional communication channel of the HFP protocol between the first mobile terminal and the Bluetooth audio device, and sends the voice of the audience to the Bluetooth audio device through the bidirectional communication channel and plays the voice to a user through a loudspeaker; meanwhile, a microphone of the bluetooth audio device receives the voice of the user, and the bluetooth audio device sends the voice of the user back to the first mobile terminal by using the two-way call channel of the HFP protocol, and the voice is sent to an opposite-end listener by the first mobile terminal through a cellular network.
Wherein, the voice signals of the channels under different Bluetooth technical protocols are mutually operated.
The interoperation comprises the steps that music signals under the A2DP protocol are called in the Bluetooth audio device and are added into the two-way call channel of the HFP protocol to be sent back to the first mobile terminal.
Further, it is proposed that the bluetooth audio device is connected to the two mobile terminals simultaneously by using a Multipoint mode, and a music channel of A2DP protocol, a sound transmission channel of HFP protocol and a bidirectional communication channel of HFP protocol are respectively established between the bluetooth audio device and the two mobile terminals.
For the music transmission channel of the above-mentioned A2DP protocol, the music transmission channel may be established using the APTX or HWA protocol instead of the A2DP protocol.
Drawings
FIG. 1 is a schematic diagram of an application scenario using the Bluetooth HFP protocol in the prior art
FIG. 2 is a schematic diagram of a first embodiment of the present invention
FIG. 3 is a schematic view of a second embodiment of the present invention
FIG. 4 is a schematic view of a third embodiment of the present invention
FIG. 5 is a diagram of a fourth embodiment of the present invention
Detailed Description
As mentioned in the background, the bluetooth alliance SIG defines a plurality of bluetooth protocols, but it is not limited to running multiple protocols simultaneously between devices, which provides an idea for implementing the present invention. Fig. 2 shows a first embodiment of the present invention, a first mobile terminal 1 is provided, the first mobile terminal 1 comprises a first bluetooth module (not shown in the figure), a bluetooth audio device 2 is provided, the bluetooth audio device 2 comprises a second bluetooth module (not shown in the figure), a speaker 21 and a microphone 22; establishing Bluetooth connection between the first mobile terminal 1 and the Bluetooth audio device 2; running a karaoke or webcast application in the mobile terminal 1, the user controlling the application to play music, the application establishing a music transmission channel using the bluetooth A2DP protocol, sending a music signal to the bluetooth audio device 2, the user listening to the music signal played back by the speaker 21, because the A2DP protocol allows the transmission of sound signals of stereo CD sound quality, the user can get the best hearing experience; when listening to high-quality music signals, the user uses the microphone 22 of the bluetooth audio device 2 to receive the voice of the user, the bluetooth audio device 2 uses the HFP protocol to establish a sound transmission channel, and sends the voice signals to the mobile terminal 1; the mobile terminal 1 receives the voice signal, records the signal or directly broadcasts the signal through the network.
Furthermore, after the music signal and the voice signal collected by the microphone 22 are mixed in the bluetooth audio device 2, the mixed signal is transmitted back to the mobile terminal 1 by using the transmission channel of the HFP protocol; the mobile terminal 1 receives the voice signal, records the signal or transmits the signal through a network; the MSBC coding mode is adopted to code the mixed sound signal, and the highest single sound track 16KHz sampling rate can be realized; of course, in the mixing process, the stereo music signals of the A2DP protocol need to be resampled and then merged into a mono signal. Through the method, the music and the voice are mixed at the Bluetooth audio equipment 2 and then transmitted back, and compared with a mode of transmitting the voice to the mobile terminal and then mixing the voice, the problem that the music and the voice are not synchronous is greatly improved, for example, the K song effect can be obviously improved.
A second embodiment is provided, as shown in fig. 3, which is different from the first embodiment in that a Multipoint (Multipoint connection) manner is adopted, that is, one bluetooth audio device 2 is paired with both the first mobile terminal 1 and the second mobile terminal 1 ', wherein a music transmission channel of A2DP protocol is established between the mobile terminal 1 and the bluetooth audio device 2, and a sound transmission channel of HFP protocol is established between the bluetooth audio device 2 and the mobile terminal 1', that is, the mobile terminal 1 sends a music signal to the bluetooth audio device 2 by using a music transmission channel established under a bluetooth A2DP protocol, and the user listens to the music signal played back by the speaker 21; receiving the voice of the user by using the microphone 22 of the bluetooth audio device 2, and sending a voice signal to the mobile terminal 1' by using a voice transmission channel established under the HFP protocol by the bluetooth audio device 2; the mobile terminal 1' receives the voice signal, records the signal or directly broadcasts the signal through the network.
Further, after the music signal and the voice signal collected by the microphone 22 are mixed in the bluetooth audio device 2, the mixed signal is transmitted back to the mobile terminal 1' by using the transmission channel of the HFP protocol; the mobile terminal 1' receives the voice signal, records it or transmits it through the network.
By the method, the device has more flexibility in operation, and a user can respectively operate the two mobile terminals according to needs.
A third embodiment is provided, as shown in fig. 4, which is different from the first embodiment in that when the user is playing K songs or live, there may be an audience who dials the phone number of the user's mobile terminal 1 to perform live interaction, such as discussion with the user or chorus with the user, and at this time, in addition to the music transmission channel of the A2DP protocol and the sound transmission channel of the HFP protocol, a bidirectional communication channel of the HFP protocol is established for the user to communicate with the audience, and the audience voice is transmitted from the mobile terminal 1 to the bluetooth audio device 2 via the bidirectional communication channel, and the user hears the audience voice played back by the speaker 21; meanwhile, the microphone 22 of the bluetooth audio device 2 receives the user's voice, and the bluetooth audio device 2 transmits the user's voice back to the mobile terminal 1 using the above-mentioned HFP protocol bidirectional communication channel and is transmitted by the mobile terminal 1 to the opposite listener via the cellular network.
In particular, the user can operate the bluetooth audio device 2 to call the A2DP music signal and add the signal into the bidirectional communication channel of the HFP protocol, so that the opposite listener can hear the voice of the user as well as the music, and through the interoperation, the interaction between the signals can be enhanced, and the interactivity between the user and the listener is enhanced. Of course, if the sampling rate of the music signal under the A2DP protocol is not consistent with the sampling rate of the two-way communication channel under the HFP protocol, the music signal under the A2DP protocol needs to be resampled first and then added.
Further, similarly to the case of the first embodiment, it is also possible to mix the music signal with the voice signal collected by the microphone 22 and the voice signal from the listener in the bluetooth audio device 2, and then transmit the mixed signal back to the mobile terminal 1 using the transmission channel of the HFP protocol; the mobile terminal 1 receives the voice signal, records the signal or directly broadcasts the signal through the network.
A fourth embodiment is provided, as shown in fig. 5, and is different from the third embodiment in that a Multipoint (Multipoint connection) manner is adopted, that is, one bluetooth audio device 2 is paired and connected with the first mobile terminal 1 and the second mobile terminal 1 ', wherein a music transmission channel of A2DP protocol and a sound transmission channel of HFP protocol are established between the mobile terminal 1 and the bluetooth audio device 2, and a two-way call channel of HFP protocol is established between the bluetooth audio device 2 and the mobile terminal 1', that is, an audience makes a call to the mobile terminal 1 ', audience voice is transmitted from the mobile terminal 1' to the bluetooth audio device 2 via the two-way call channel, and a user hears the audience voice played back by the speaker 21; meanwhile, the microphone 22 of the bluetooth audio device 2 simultaneously receives the user's voice, and the bluetooth audio device 2 transmits the user's voice back to the mobile terminal 1 'using the above-mentioned HFP protocol bi-directional call channel and is transmitted by the mobile terminal 1' to the opposite listener via the cellular network.
Similarly, the user can operate the bluetooth audio device 2 to call up the A2DP music signal and join the bidirectional communication channel of the HFP protocol, so that the opposite listener can hear not only the user's voice but also music.
Further, similarly to the case of the first embodiment, it is also possible to mix the music signal with the voice signal collected by the microphone 22 and the voice signal from the listener in the bluetooth audio device 2, and then transmit the mixed signal back to the mobile terminal 1 using the transmission channel of the HFP protocol; the mobile terminal 1 receives the voice signal, records the signal or directly broadcasts the signal through the network.
The mobile terminal 1 in the above embodiments includes, but is not limited to, a mobile phone, a tablet computer, a laptop computer; the bluetooth audio device 2 includes, but is not limited to, a headset with a microphone, a microphone to which the headset can be connected; besides the above-mentioned A2DP protocol for transmitting high-quality stereo music signals, an upgraded version of A2DP protocol such as APTX and HWA may be used; typically, the above method may be implemented using the 8670/8675 chipset of a CSR platform, which is well known to those skilled in the art.
The core of the invention is that a plurality of different Bluetooth audio transmission protocols are simultaneously operated between the mobile terminal 1 and the Bluetooth audio equipment 2, and audio signals under different transmission protocols are mutually operated, so that the user experience and the interaction function of the product are greatly improved.
Claims (7)
1. A music and voice transmission operation method based on Bluetooth is provided, wherein a first mobile terminal (1) is provided, and the first mobile terminal (1) comprises a first Bluetooth module; providing a Bluetooth audio device (2), wherein the Bluetooth audio device (2) comprises a second Bluetooth module, a loudspeaker (21) and a microphone (22); providing a second mobile terminal (1 '), the second mobile terminal (1') comprising a third bluetooth module;
establishing Bluetooth connection between a first mobile terminal (1) and Bluetooth audio equipment (2);
establishing a Bluetooth connection between a second mobile terminal (1') and a Bluetooth audio device (2);
establishing a music transmission channel by using a Bluetooth A2DP protocol, sending a music signal to a Bluetooth audio device (2) by a first mobile terminal (1), and replaying the music signal to a user by a loudspeaker (21);
the microphone (22) of the Bluetooth audio device (2) receives the user voice, the HFP protocol is used for establishing a sound transmission channel, and the Bluetooth audio device (2) sends a voice signal to the second mobile terminal (1').
2. The bluetooth-based music and voice transmission operation method according to claim 1, wherein after the music signal and the voice signal collected by the microphone (22) are mixed in the bluetooth audio device (2), the mixed signal is transmitted back to the second mobile terminal (1') using the transmission channel of the HFP protocol.
3. A music and voice transmission operation method based on Bluetooth is provided, wherein a first mobile terminal (1) is provided, and the first mobile terminal (1) comprises a first Bluetooth module; providing a Bluetooth audio device (2), wherein the Bluetooth audio device (2) comprises a second Bluetooth module, a loudspeaker (21) and a microphone (22);
establishing Bluetooth connection between a first mobile terminal (1) and Bluetooth audio equipment (2);
characterized in that a music transmission channel is established using the bluetooth A2DP protocol, a music signal is sent by the first mobile terminal (1) to the bluetooth audio device (2), and the music signal is played back by the speaker (21) to the user;
a microphone (22) of the Bluetooth audio device (2) receives user voice, a HFP protocol is used for establishing a sound transmission channel, and the Bluetooth audio device (2) sends a voice signal to the first mobile terminal (1);
the first mobile terminal (1) receives a request for communication of the audience, keeps the music transmission channel established under the A2DP protocol and the sound transmission channel established under the HFP protocol, establishes a bidirectional communication channel of the HFP protocol between the first mobile terminal (1) and the Bluetooth audio device (2), and sends the voice of the audience to the Bluetooth audio device (2) through the bidirectional communication channel by the first mobile terminal (1) and plays the voice to the user by the loudspeaker (21);
meanwhile, a microphone (22) of the Bluetooth audio device (2) receives the voice of the user, and the Bluetooth audio device (2) sends the voice of the user back to the first mobile terminal (1) by using the two-way call channel of the HFP protocol and sends the voice of the user to an opposite-end listener through a cellular network by the first mobile terminal (1);
interoperation is carried out to the sound signal of passageway under the different bluetooth technical agreement, and it includes: music signals under A2DP protocol are called in the Bluetooth audio device (2), added into the two-way communication channel of the HFP protocol and sent back to the first mobile terminal (1).
4. The bluetooth-based music and voice transmission operation method according to claim 3, mixing the music signal with the voice signal collected by the microphone (22) and the voice signal from the listener in the bluetooth audio device (2), and then transmitting the mixed signal back to the first mobile terminal (1) using the transmission channel of the HFP protocol; the first mobile terminal (1) receives the voice signal.
5. A music and voice transmission operation method based on Bluetooth is provided, wherein a first mobile terminal (1) is provided, and the first mobile terminal (1) comprises a first Bluetooth module; providing a Bluetooth audio device (2), wherein the Bluetooth audio device (2) comprises a second Bluetooth module, a loudspeaker (21) and a microphone (22); providing a second mobile terminal (1 '), the second mobile terminal (1') comprising a third bluetooth module;
establishing Bluetooth connection between a first mobile terminal (1) and Bluetooth audio equipment (2);
establishing a Bluetooth connection between a second mobile terminal (1') and a Bluetooth audio device (2);
characterized in that a music transmission channel is established using the bluetooth A2DP protocol, a music signal is sent by the first mobile terminal (1) to the bluetooth audio device (2), and the music signal is played back by the speaker (21) to the user;
a microphone (22) of the Bluetooth audio device (2) receives user voice, establishes a sound transmission channel by using an HFP protocol and sends a voice signal to the first mobile terminal (1);
the second mobile terminal (1 ') receives the request of the audience conversation, keeps the music transmission channel established under the A2DP protocol and the sound transmission channel established under the HFP protocol between the first mobile terminal (1) and the Bluetooth audio device (2), establishes the two-way conversation channel of the HFP protocol between the second mobile terminal (1') and the Bluetooth audio device (2), and the audience voice is sent to the Bluetooth audio device (1 ') from the second mobile terminal (1') through the two-way conversation channel and is played to the user by the loudspeaker (21);
meanwhile, a microphone (22) of the Bluetooth audio device (2) receives the voice of the user, and the Bluetooth audio device (2) sends the voice of the user back to the second mobile terminal (1 ') by using the two-way call channel of the HFP protocol and sends the voice of the user to an opposite-end listener through a cellular network by the second mobile terminal (1');
interoperation is carried out to the sound signal of passageway under the different bluetooth technical agreement, and it includes: music signals under A2DP protocol are called in the Bluetooth audio device (2), added into the two-way communication channel of the HFP protocol and sent back to the second mobile terminal (1').
6. The bluetooth-based music and voice transmission operation method according to claim 5, mixing the music signal with the voice signal collected by the microphone (22) and the voice signal from the listener in the bluetooth audio device (2), and then transmitting the mixed signal back to the first mobile terminal (1) using the transmission channel of the HFP protocol; the first mobile terminal (1) receives the voice signal.
7. The method of claim 1-6, wherein the music and voice transmission channel is established using APTX or HWA protocol instead of A2DP protocol.
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| CN113794797B (en) * | 2021-06-16 | 2022-08-26 | 荣耀终端有限公司 | Terminal equipment and method for picking up sound through Bluetooth peripheral |
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Denomination of invention: A Bluetooth-based high-quality music and voice transmission operation method Effective date of registration: 20220809 Granted publication date: 20201120 Pledgee: Beijing Zhongguancun bank Limited by Share Ltd. Pledgor: BEIJING SABINE TECHNOLOGIES Ltd. Registration number: Y2022990000512 |
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