CN112423197A - Method and device for realizing multipath Bluetooth audio output - Google Patents
Method and device for realizing multipath Bluetooth audio output Download PDFInfo
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- CN112423197A CN112423197A CN202011301975.XA CN202011301975A CN112423197A CN 112423197 A CN112423197 A CN 112423197A CN 202011301975 A CN202011301975 A CN 202011301975A CN 112423197 A CN112423197 A CN 112423197A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 230000000694 effects Effects 0.000 description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
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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
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/07—Applications of wireless loudspeakers or wireless microphones
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- Acoustics & Sound (AREA)
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Abstract
The invention relates to the technical field of audio playing, aims to solve the problem that the existing intelligent terminal cannot simultaneously output multiple paths of Bluetooth audio, and provides a method and a device for realizing the output of multiple paths of Bluetooth audio, wherein the main technical concept is as follows: determining the number N of paths needing to simultaneously output Bluetooth audio, wherein N is a natural number greater than 1; acquiring audio data sent by an intelligent terminal, and processing the audio data to enable the bandwidth occupied by audio data transmission to be less than 1/N of the maximum bandwidth of Bluetooth; the processed audio data are copied into N parts, and the copied audio data are correspondingly sent to N audio playing devices which are connected with the intelligent terminal in a Bluetooth mode; and the audio playing equipment synchronously plays the received audio data. The invention realizes the simultaneous output of multiple paths of Bluetooth audios and is suitable for the intelligent television.
Description
Technical Field
The invention relates to the technical field of audio playing, in particular to a method and a device for realizing multi-channel Bluetooth audio output.
Background
The current wireless connection's bluetooth speaker uses and constantly popularizes owing to do not have the restriction of connecting wire and convenient to use's advantage. However, in the prior art, although the intelligent terminal can be connected to a plurality of bluetooth devices simultaneously, according to the standard classic bluetooth protocol, only one path of bluetooth audio can be output due to the limitation of bluetooth bandwidth. This makes the user experience poor, for example, the home theater system with smart tv as the center in the user's home, because two bluetooth speakers cannot be connected at the same time to output audio, the home theater sound effect is greatly reduced.
Disclosure of Invention
The invention aims to solve the problem that the existing intelligent terminal cannot simultaneously output multiple paths of Bluetooth audios, and provides a method and a device for realizing the multiple paths of Bluetooth audio outputs.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for realizing multi-channel Bluetooth audio output is applied to an intelligent terminal and comprises the following steps:
step 1, determining the number N of paths needing to simultaneously output Bluetooth audios, wherein N is a natural number greater than 1;
step 2, acquiring audio data sent by the intelligent terminal, and processing the audio data to enable the bandwidth occupied by audio data transmission to be smaller than 1/N of the maximum bandwidth of the Bluetooth;
step 3, copying the processed audio data into N parts, and correspondingly sending the copied audio data into N audio playing devices which are connected with the intelligent terminal through Bluetooth;
and 4, synchronously playing the received audio data by the audio playing equipment.
Further, in step 2, the processing the audio data includes:
and carrying out coding compression on the audio data, and reducing the coding rate during the coding compression so that the bandwidth occupied by the audio data transmission after the coding compression is less than 1/N of the maximum bandwidth of the Bluetooth.
Further, in step 1, the method for determining the number of channels N for which bluetooth audio output is required to be performed simultaneously includes:
and determining the number of audio playing devices which establish Bluetooth connection with the intelligent terminal at the same time, and taking the number of the audio playing devices as the number N of paths needing to output Bluetooth audio at the same time.
Further, the method also comprises the following steps: when the number of the audio playing devices which establish the Bluetooth connection with the intelligent terminal is larger than 2, the Bluetooth connection between all the audio playing devices except the two audio playing devices which are connected latest and the mobile terminal is automatically disconnected according to the connection sequence.
Further, in step 1, the method for determining the number of channels N for which bluetooth audio output needs to be performed simultaneously further includes:
and receiving the path number N sent by the intelligent terminal, and taking the path number N as the path number N needing to simultaneously output the Bluetooth audio.
The invention also provides a device for realizing multi-channel Bluetooth audio output, which is applied to an intelligent terminal and comprises: a determination unit, a processing unit and a copying unit;
the determining unit is used for determining the number N of paths needing to simultaneously output the Bluetooth audio, wherein N is a natural number greater than 1;
the processing unit is used for acquiring audio data sent by the intelligent terminal and processing the audio data, so that the bandwidth occupied by audio data transmission is less than 1/N of the maximum bandwidth of the Bluetooth;
the copying unit is used for copying the processed audio data into N parts, correspondingly sending the copied audio data into N audio playing devices which are connected with the intelligent terminal through Bluetooth, and synchronously playing the received audio data by the audio playing devices.
Further, the processing unit is further configured to:
and carrying out coding compression on the audio data, and reducing the coding rate during the coding compression so that the bandwidth occupied by the audio data transmission after the coding compression is less than 1/N of the maximum bandwidth of the Bluetooth.
Further, the determining unit is further configured to:
and determining the number of audio playing devices which establish Bluetooth connection with the intelligent terminal at the same time, and taking the number of the audio playing devices as the number N of paths needing to output Bluetooth audio at the same time.
Further, the method also comprises the following steps: a connection unit;
the connection unit is used for automatically disconnecting the Bluetooth connection between all the audio playing devices except the two audio playing devices which are newly connected and the mobile terminal according to the connection sequence when the number of the audio playing devices which establish the Bluetooth connection with the intelligent terminal is larger than 2.
Further, in step 1, the determining unit is further configured to:
and receiving the path number N sent by the intelligent terminal, and taking the path number N as the path number N needing to simultaneously output the Bluetooth audio.
The invention has the beneficial effects that: according to the method and the device for realizing the output of the multi-channel Bluetooth audio, the audio signal sent by the intelligent terminal is processed, so that the bandwidth required by the transmission of the audio signal is reduced, the simultaneous output of the multi-channel Bluetooth audio is realized, the stereo effect is simulated, and the user experience is improved.
Drawings
Fig. 1 is a schematic flowchart of a method for implementing multiple bluetooth audio outputs according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an apparatus for implementing multiple bluetooth audio outputs according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The invention aims to solve the problem that in the prior art, due to the limitation of Bluetooth bandwidth, multi-channel Bluetooth audio signal transmission cannot be carried out simultaneously, and provides a method and a device for realizing multi-channel Bluetooth audio output, wherein the main technical concept is as follows: determining the number N of paths needing to simultaneously output Bluetooth audio, wherein N is a natural number greater than 1; acquiring audio data sent by an intelligent terminal, and processing the audio data to enable the bandwidth occupied by audio data transmission to be less than 1/N of the maximum bandwidth of Bluetooth; the processed audio data are copied into N parts, and the copied audio data are correspondingly sent to N audio playing devices which are connected with the intelligent terminal in a Bluetooth mode; and the audio playing equipment synchronously plays the received audio data.
Firstly, establishing Bluetooth connection between an intelligent terminal and a plurality of audio playing devices, and determining the number of paths of Bluetooth audio output required to be performed simultaneously, namely determining that a user needs to perform output of a plurality of paths of Bluetooth audio simultaneously; after the intelligent terminal sends the audio data, the audio data sent by the intelligent terminal is processed, the bandwidth occupied by the transmission of the audio data is reduced, and the reduction degree determines the number of paths of Bluetooth audio output according to the requirement; then copying the processed audio data, wherein the number of copies corresponds to the number of paths needing to simultaneously output the Bluetooth audio; and finally, correspondingly sending the copied audio data to corresponding audio playing equipment, and after receiving the audio data, the audio playing equipment decodes and synchronously plays the audio data to simulate the stereo effect.
Examples
The method for realizing the multi-channel Bluetooth audio output is applied to an intelligent terminal, wherein the intelligent terminal can be an intelligent terminal with a Bluetooth communication module and an audio playing function, such as an intelligent mobile phone, an intelligent television, a tablet personal computer and the like, the intelligent terminal establishes Bluetooth communication with a plurality of audio playing devices through the Bluetooth communication module, and the audio playing devices can be Bluetooth sound boxes. As shown in fig. 1, the method comprises the steps of:
step S1, determining the number N of paths needing to simultaneously output Bluetooth audio, wherein N is a natural number greater than 1;
the method for determining the number N of the paths needing to simultaneously output the Bluetooth audio comprises the following steps: and determining the number of audio playing devices which establish Bluetooth connection with the intelligent terminal at the same time, and taking the number of the audio playing devices as the number N of paths needing to output Bluetooth audio at the same time.
Specifically, the number of audio playing devices which are connected with the intelligent terminal through the Bluetooth can be detected, and the number N of paths which need to output the Bluetooth audio at the same time is determined according to the detected number of the audio playing devices.
In this embodiment, the method for determining the number of channels N requiring simultaneous bluetooth audio output may further include: and receiving the path number N sent by the intelligent terminal, and taking the path number N as the path number N needing to simultaneously output the Bluetooth audio.
Specifically, the multi-channel Bluetooth audio output can be performed according to the number of channels set on the intelligent terminal by the user.
Step S2, audio data sent by the intelligent terminal are obtained and processed, so that the bandwidth occupied by audio data transmission is smaller than 1/N of the maximum bandwidth of Bluetooth;
wherein processing the audio data may include: and carrying out coding compression on the audio data, and reducing the coding rate during the coding compression so that the bandwidth occupied by the audio data transmission after the coding compression is less than 1/N of the maximum bandwidth of the Bluetooth.
And after receiving the Audio data sent by the Audio, the Bluetooth protocol stack performs coding compression, and reduces the coding rate during coding compression, thereby reducing the default tone quality effect. The code rate of the audio stream compressed by the coding is low, and the bandwidth occupied by the transmission is smaller than 1/N of the maximum bandwidth of the Bluetooth. For example, assuming that the number N of paths that need to perform bluetooth audio output at the same time is 2, the coding rate is reduced during coding compression, the bluetooth protocol stack is modified, and the value of bitpool encoded in the bluetooth a2dp protocol is changed from 53 to 33 by default, so as to reduce the coding rate, and make the bandwidth occupied by transmission less than 50% of the maximum bandwidth of bluetooth.
S3, copying the processed audio data into N parts, and correspondingly sending the copied audio data into N audio playing devices which are connected with the intelligent terminal through Bluetooth;
specifically, the data audio data buffer encoded and compressed by the bluetooth protocol stack may be copied to be multiple copies, and the multiple audio data obtained by copying may be correspondingly sent to multiple connected audio playing devices through the bluetooth protocol stack interface.
Step S4, the audio playing device synchronously plays the received audio data. And after receiving the sent audio data, the audio playing equipment decodes the audio data and synchronously plays the corresponding audio data.
In order to improve the sound quality and the stereo effect of the audio, in this embodiment, the number N of channels that need to simultaneously output the bluetooth audio is preferably 2. When the number of the audio playing devices which establish Bluetooth connection with the intelligent terminal is 1, entering a common mode to play audio data, and when the number of the audio playing devices which establish Bluetooth connection with the intelligent terminal is 2, entering a double-sound mode to play audio data through two audio playing devices; when the number of the audio playing devices which establish the Bluetooth connection with the intelligent terminal is larger than 2, the Bluetooth connection between all the audio playing devices except the two audio playing devices which are connected latest and the mobile terminal is automatically disconnected according to the connection sequence, and the two audio playing devices which are connected latest are used for playing the audio data.
Based on the above technical solution, this embodiment further provides a device for implementing multi-channel bluetooth audio output, which is applied to an intelligent terminal, as shown in fig. 2, and includes: a determination unit, a processing unit and a copying unit;
the determining unit is used for determining the number N of paths needing to simultaneously output the Bluetooth audio, wherein N is a natural number greater than 1;
the processing unit is used for acquiring audio data sent by the intelligent terminal and processing the audio data, so that the bandwidth occupied by audio data transmission is less than 1/N of the maximum bandwidth of the Bluetooth;
the copying unit is used for copying the processed audio data into N parts, correspondingly sending the copied audio data into N audio playing devices which are connected with the intelligent terminal through Bluetooth, and synchronously playing the received audio data by the audio playing devices.
It can be understood that, since the apparatus for implementing multiple bluetooth audio outputs according to the embodiment of the present invention is an apparatus for implementing the method for implementing multiple bluetooth audio outputs according to the embodiment, the apparatus disclosed in the embodiment is relatively simple in description since it corresponds to the method disclosed in the embodiment, and reference may be made to part of the description of the method for the relevant point.
Claims (10)
1. A method for realizing multi-channel Bluetooth audio output is applied to an intelligent terminal and is characterized by comprising the following steps:
step 1, determining the number N of paths needing to simultaneously output Bluetooth audios, wherein N is a natural number greater than 1;
step 2, acquiring audio data sent by the intelligent terminal, and processing the audio data to enable the bandwidth occupied by audio data transmission to be smaller than 1/N of the maximum bandwidth of the Bluetooth;
step 3, copying the processed audio data into N parts, and correspondingly sending the copied audio data into N audio playing devices which are connected with the intelligent terminal through Bluetooth;
and 4, synchronously playing the received audio data by the audio playing equipment.
2. The method as claimed in claim 1, wherein the step 2 of processing the audio data comprises:
and carrying out coding compression on the audio data, and reducing the coding rate during the coding compression so that the bandwidth occupied by the audio data transmission after the coding compression is less than 1/N of the maximum bandwidth of the Bluetooth.
3. The method according to claim 1, wherein the step 1 of determining the number N of the channels requiring simultaneous bluetooth audio output comprises:
and determining the number of audio playing devices which establish Bluetooth connection with the intelligent terminal at the same time, and taking the number of the audio playing devices as the number N of paths needing to output Bluetooth audio at the same time.
4. The method for implementing multiple bluetooth audio outputs according to claim 3, further comprising: when the number of the audio playing devices which establish the Bluetooth connection with the intelligent terminal is larger than 2, the Bluetooth connection between all the audio playing devices except the two audio playing devices which are connected latest and the mobile terminal is automatically disconnected according to the connection sequence.
5. The method according to claim 1, wherein the step 1 of determining the number N of the bluetooth audio outputs to be performed simultaneously further comprises:
and receiving the path number N sent by the intelligent terminal, and taking the path number N as the path number N needing to simultaneously output the Bluetooth audio.
6. A device for realizing multichannel bluetooth audio output is applied to intelligent terminal, its characterized in that includes: a determination unit, a processing unit and a copying unit;
the determining unit is used for determining the number N of paths needing to simultaneously output the Bluetooth audio, wherein N is a natural number greater than 1;
the processing unit is used for acquiring audio data sent by the intelligent terminal and processing the audio data, so that the bandwidth occupied by audio data transmission is less than 1/N of the maximum bandwidth of the Bluetooth;
the copying unit is used for copying the processed audio data into N parts, correspondingly sending the copied audio data into N audio playing devices which are connected with the intelligent terminal through Bluetooth, and synchronously playing the received audio data by the audio playing devices.
7. The apparatus for implementing multiple bluetooth audio outputs according to claim 6, wherein the processing unit is further configured to:
and carrying out coding compression on the audio data, and reducing the coding rate during the coding compression so that the bandwidth occupied by the audio data transmission after the coding compression is less than 1/N of the maximum bandwidth of the Bluetooth.
8. The apparatus for implementing multiple bluetooth audio outputs according to claim 6, wherein the determining unit is further configured to:
and determining the number of audio playing devices which establish Bluetooth connection with the intelligent terminal at the same time, and taking the number of the audio playing devices as the number N of paths needing to output Bluetooth audio at the same time.
9. The apparatus for implementing multiple bluetooth audio outputs according to claim 8, further comprising: a connection unit;
the connection unit is used for automatically disconnecting the Bluetooth connection between all the audio playing devices except the two audio playing devices which are newly connected and the mobile terminal according to the connection sequence when the number of the audio playing devices which establish the Bluetooth connection with the intelligent terminal is larger than 2.
10. The apparatus for implementing multiple bluetooth audio outputs according to claim 6, wherein in step 1, the determining unit is further configured to:
and receiving the path number N sent by the intelligent terminal, and taking the path number N as the path number N needing to simultaneously output the Bluetooth audio.
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| CN202011301975.XA CN112423197A (en) | 2020-11-19 | 2020-11-19 | Method and device for realizing multipath Bluetooth audio output |
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| CN202011301975.XA CN112423197A (en) | 2020-11-19 | 2020-11-19 | Method and device for realizing multipath Bluetooth audio output |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023231692A1 (en) * | 2022-05-30 | 2023-12-07 | 荣耀终端有限公司 | Video processing method and terminal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103873983A (en) * | 2012-12-14 | 2014-06-18 | 上海赤炫信息科技有限公司 | Design method for novel vehicle-mounted audio frequency system |
| JP2017188868A (en) * | 2016-04-04 | 2017-10-12 | Smc株式会社 | Industrial radio communication system |
| CN108389583A (en) * | 2018-07-04 | 2018-08-10 | 恒玄科技（上海）有限公司 | A kind of coding/decoding method and system of wireless Bluetooth headsets communication audio |
| CN108881990A (en) * | 2018-06-25 | 2018-11-23 | 努比亚技术有限公司 | Audio frequency playing method, terminal and computer storage medium |
| CN111294777A (en) * | 2018-12-06 | 2020-06-16 | 海能达通信股份有限公司 | Control method and communication method of Bluetooth audio transmitter |
-
2020
- 2020-11-19 CN CN202011301975.XA patent/CN112423197A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103873983A (en) * | 2012-12-14 | 2014-06-18 | 上海赤炫信息科技有限公司 | Design method for novel vehicle-mounted audio frequency system |
| JP2017188868A (en) * | 2016-04-04 | 2017-10-12 | Smc株式会社 | Industrial radio communication system |
| CN108881990A (en) * | 2018-06-25 | 2018-11-23 | 努比亚技术有限公司 | Audio frequency playing method, terminal and computer storage medium |
| CN108389583A (en) * | 2018-07-04 | 2018-08-10 | 恒玄科技（上海）有限公司 | A kind of coding/decoding method and system of wireless Bluetooth headsets communication audio |
| CN111294777A (en) * | 2018-12-06 | 2020-06-16 | 海能达通信股份有限公司 | Control method and communication method of Bluetooth audio transmitter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023231692A1 (en) * | 2022-05-30 | 2023-12-07 | 荣耀终端有限公司 | Video processing method and terminal |
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Application publication date: 20210226 |