CN101645717A - Method and terminal for sharing audio information by multiple users by utilizing Bluetooth headsets - Google Patents
Method and terminal for sharing audio information by multiple users by utilizing Bluetooth headsets Download PDFInfo
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Abstract
The invention provides a method and a terminal for sharing audio information by multiple users by utilizing Bluetooth headsets. The terminal comprises a baseband module, a Bluetooth module and an audio information control module. The method comprises the following steps: the mobile terminal detects the number of the matched Bluetooth headsets and records the address information of each matched Bluetooth headset after receiving the request information for sharing audio information sent by users; if the number of the matched Bluetooth is N, then the mobile terminal copies the channel of the original bearer audio data stream for N-1 times, and sends the channels of each bearer audio data stream respectively to each corresponding Bluetooth headset according to the addresses of the matched N Bluetooth headsets, wherein, N is greater than or equal to 2. The invention utilizes current Bluetooth functions to effectively solve the problem existing in realizing the sharing method of audio information by special equipment, thus having the advantages of good portable performance, benefit of mobile usage for users and convenient popularity in mobile equipment.
Description
Technical field
The invention belongs to field of mobile communication, relate in particular to method and terminal that a kind of multi-user utilizes the bluetooth earphone sharing audio information.
Background technology
Along with the continuous development of personal mobile communication technology, comprise that a lot of portable mobile apparatus of mobile phone all have been equipped with Bluetooth function.Bluetooth technology is the technology of a kind of low cost, low-power and short-distance wireless communication, can be applied in widely on any personal mobile communication equipment.Utilize the wireless transmission function of Bluetooth technology, can design bluetooth earphone, portable mobile phone table and directly be worn on communicator on the finger etc., these products are established the wireless transmission that Bluetooth chip just can be realized information in needing only, can also provide functions such as online and transmitting-receiving E-mail, quite hommization.
Simultaneously, along with popularizing of various tone playing equipments (as MP3, CD, broadcast receiver, walkman etc.), a lot of people can carry a tone playing equipment, by bus, listen to various music or information when walking along the street or rest.In order not influence other people, people often wearing headphones listen to.And wherein, use bluetooth earphone to listen to the standard configuration that music has become the middle and high end mobile phone.
When utilizing bluetooth earphone to listen to music, tone playing equipment can only be set up man-to-man the connection with this bluetooth earphone, can not realize that still the multi-user passes through the function of the shared same audio-frequency information of bluetooth earphone separately.And along with the continuous increase of user's request, people need the several people to share same audio-frequency information simultaneously sometimes, between for example small-sized meeting, the lovers or the like.The method that realizes this class function at present mainly contains two kinds: the one, by wired mode, promptly increase one or several audio output port, and be connected with earphone respectively then; Another kind is to increase special wireless transmitting device, designs special wireless receiving earphone simultaneously, finally realizes the function of the same audio-frequency information of multiple users share.
There are following two problems in the above-mentioned method of sharing by special wireless transmitting device realization audio-frequency information:
1) portable performance is poor: this method needs independent audio transmitting device, needs independent receiving equipment at the earphone receiving terminal, therefore can't accomplish microminiaturization, is unfavorable for that the user moves use;
2) penetration and promotion is poor: consider factors such as volume, cost, these class methods can't be popularized in mobile device widely.
Summary of the invention
The technical problem to be solved in the present invention provides method and the terminal that a kind of multi-user utilizes the bluetooth earphone sharing audio information, to solve the problem of sharing audio information inconvenience in the prior art.
For addressing the above problem, the invention provides the method that a kind of multi-user utilizes the bluetooth earphone sharing audio information, be applicable to the portable terminal that has Bluetooth function, comprising:
After receiving the shared audio file request message that the user sends, described portable terminal detects the number of paired Bluetooth headset and writes down the address information of each paired Bluetooth headset; As the bluetooth earphone that matches has N, then described portable terminal with the duplicating channel of former carrying audio data stream N-1 time after, address according to the N that a matches bluetooth earphone sends to each corresponding bluetooth earphone with the channel of each carrying audio data stream respectively, wherein, and N 〉=2.
Further, said method also can have following feature:
Described portable terminal is meant the duplicating channel of former carrying audio data stream for N-1 time: described portable terminal carries out copy operation to this channel again, and after duplicating N-1 time N-1 channel and the former channel that obtains is carried out filtering after earlier described channel being amplified.
Further, said method also can have following feature:
When the data flow of an audio file is carried by two or more channels, then described portable terminal is meant the duplicating channel of former carrying audio data stream for N-1 time: described portable terminal all duplicates each channel of former carrying audio data stream N-1 time, obtain the channel of this audio file data stream of N group carrying, include described two or more channels of the data flow of this audio file of carrying in each group channel;
Respectively the channel of each carrying audio data stream being sent to each corresponding bluetooth earphone according to the address of the N that a matches bluetooth earphone is meant: the channel that described portable terminal will described respectively this audio file data of N group carrying flows according to the address of N the bluetooth earphone that matches sends to a described N bluetooth earphone.
The present invention also provides a kind of multi-user to utilize the terminal of bluetooth earphone sharing audio information, comprising: baseband module, bluetooth module and audio frequency letter machine control module;
Described baseband module is used for after receiving the shared audio file request that the user sends, and sends the coupling order to described bluetooth module; Also be used for receiving described bluetooth module after the address information of the paired Bluetooth headset of its transmission, preserve this information and start the bluetooth earphone function of described bluetooth module; Also be used for when judging the bluetooth earphone that matches and have N, treating the data flow of shared audio file and carrying out coding-decoding operation, and send to described bluetooth module; Also be used for after receiving the address request that described audio frequency letter machine control module is sent, the address information of N the described paired Bluetooth headset of preserving it on sent to described audio frequency believe the machine control module; Wherein, N 〉=2;
Described bluetooth module is used for when receiving described coupling order, searches for and mates bluetooth earphone in its signal cover, and the address information of paired Bluetooth headset is sent to described baseband module; Also be used for sending to described audio frequency letter machine control module by the described audio data stream that channel will be received;
Described audio frequency letter machine control module is used for sending described address request to described baseband module behind the channel of receiving the described audio data stream of carrying; Also be used for after the address information that receives a described N paired Bluetooth headset, behind the duplicating channel of described carrying audio data stream N-1 time, respectively the channel of each carrying audio data stream is sent to each corresponding bluetooth earphone according to the address of the N that a matches bluetooth earphone.
Further, above-mentioned terminal also can have following feature:
Described audio frequency letter machine control module is used for the duplicating channel of described carrying audio data stream is meant for N-1 time: after described audio frequency letter machine control module is used for earlier described channel being amplified, again this channel is carried out copy operation, and N-1 channel and the former channel that obtains carried out filtering duplicating N-1 time.
Further, above-mentioned terminal also can have following feature:
When the data flow of an audio file is carried by two or more channels, then described audio frequency letter machine control module is used for the duplicating channel of described carrying audio data stream is meant for N-1 time: described audio frequency letter machine control module is all duplicated each channel of described carrying audio data stream N-1 time, obtain the channel of this audio file data stream of N group carrying, include described two or more channels of the data flow of this audio file of carrying in each group channel;
Described audio frequency letter machine control module is used for respectively the channel of each carrying audio data stream being sent to each corresponding bluetooth earphone according to the address of N the bluetooth earphone that matches and is meant: described audio frequency letter machine control module is used for will described respectively N group carrying the channel that this audio file data flows according to the address of N the bluetooth earphone that matches and sends to a described N bluetooth earphone.
Further, above-mentioned terminal also can have following feature:
Described baseband module links to each other with bluetooth module by universal asynchronous reception/dispensing device (UART) interface, is connected with described audio frequency letter machine control module by the UART interface; Described bluetooth module is connected with described audio frequency letter machine control module by the audio data transmission interface.
Further, above-mentioned terminal also can have following feature:
Be provided with Digital Signal Processing (DSP) module in the described baseband module;
The data flow that described baseband module is used to treat shared audio file is carried out coding-decoding operation and is meant:
Described DSP module is used for the described shared file for the treatment of is decoded, as after judging this and treating that shared file is audio file, then also be used for this is treated that the audio data stream of shared file carries out sub-band coding (SBC), and the SBC audio data stream after will encoding is cached in the inner random asccess memory (RAM); Also be used for after the SBC amount of audio data of judging internal RAM reaches default first buffer memory, notifying described baseband module;
Described baseband module is used for from the internal RAM of described DSP module the SBC voice data being read after receiving described notice, and these metadata caches are arrived in the inner static random access memory (SRAM); Also be used for after the SBC amount of audio data of judging SRAM buffer memory on it reaches default second buffering capacity, from described SRAM, take out the SBC voice data and this SBC voice data is carried out Bluetooth audio frequency mode agreement (A2DP) transfer encoding once more.
The present invention utilizes existing Bluetooth function, has solved effectively by special equipment and has realized the problem that the shared method of audio-frequency information exists, and it is good to have portable performance, and be beneficial to the user and move use, and the advantage that can in mobile device, popularize easily.
Description of drawings
Fig. 1 is the terminal structure schematic diagram of sharing audio information in the embodiment of the invention;
Fig. 2 is the method flow diagram of sharing audio information in the embodiment of the invention;
Fig. 3 is the process schematic diagram of replication channels in the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples technical scheme of the present invention is described in detail.
The basic design of the method for the invention is: after receiving the shared audio file request message that the user sends, portable terminal detects the number of paired Bluetooth headset and writes down the address information of each paired Bluetooth headset; As the bluetooth earphone that matches has N, then portable terminal with the duplicating channel of former carrying audio data stream N-1 time after, the channel that will carry each audio data stream according to the address of the N that a matches bluetooth earphone respectively sends to each corresponding bluetooth earphone, wherein, N 〉=2.
Wherein, portable terminal is meant the duplicating channel of former carrying audio data stream for N-1 time: portable terminal carries out copy operation to this channel again, and after duplicating N-1 time N-1 channel and the former channel that obtains is carried out filtering after earlier described channel being amplified.
When the data flow of an audio file is carried by two or more channels, then portable terminal is meant the duplicating channel of former carrying audio data stream for N-1 time: portable terminal all duplicates each channel of former carrying audio data stream N-1 time, obtain the channel of this audio file data stream of N group carrying, include described two or more channels of the data flow of this audio file of carrying in each group channel;
Respectively the channel of each carrying audio data stream being sent to each corresponding bluetooth earphone according to the address of the N that a matches bluetooth earphone is meant: portable terminal according to the address of N the bluetooth earphone that matches respectively the channel that flows of this this audio file data of N group carrying send to an above-mentioned N bluetooth earphone.
As shown in Figure 1, the terminal of sharing audio information comprises in the embodiment of the invention: bluetooth module 101, audio frequency letter machine control module 102 and baseband module 103, wherein, attaching in the baseband module 103 has DSP module 104.Baseband module 104 can but be not limited to (Universal AsynchronousReceiver/Transmitter by UART, universal asynchronous reception/dispensing device) interface links to each other with bluetooth module 101, can but be not limited to be connected by UART interface and audio frequency letter machine control module 102; Bluetooth module 101 links to each other with audio frequency letter machine control module 102 by the audio data transmission interface.
Each module functions is as follows:
Baseband module is used for after receiving the shared audio file request that the user sends, and sends the coupling order to bluetooth module; Also be used for receiving bluetooth module after the address information of the paired Bluetooth headset of its transmission, preserve this information and start the bluetooth earphone function of bluetooth module; Also be used for when judging the bluetooth earphone that matches and have N, treating the data flow of shared audio file and carrying out coding-decoding operation, and send to bluetooth module; Also be used for after receiving the address request that audio frequency letter machine control module is sent, the address information of N the paired Bluetooth headset of preserving it on sent to audio frequency believe the machine control module; Wherein, N 〉=2;
Bluetooth module is used for receiving when order coupling, searches for and mates bluetooth earphone in its signal cover, and the address information of paired Bluetooth headset is sent to baseband module; Also be used for the audio data stream of receiving being sent to audio frequency letter machine control module by channel;
Audio frequency letter machine control module is used for sending address request to baseband module behind the channel of receiving the carrying audio data stream; Also be used for after the address information that receives N paired Bluetooth headset, behind duplicating channel N-1 time with the carrying audio data stream, respectively the channel that each carries audio data stream sent to each corresponding bluetooth earphone according to the address of the N that a matches bluetooth earphone.
Wherein, audio frequency letter machine control module is used for the duplicating channel of carrying audio data stream is meant for N-1 time: after audio frequency letter machine control module is used for earlier above-mentioned channel being amplified, again this channel is carried out copy operation, and N-1 channel and the former channel that obtains carried out filtering duplicating N-1 time.
When the data flow of an audio file is carried by two or more channels, then audio frequency letter machine control module is used for the duplicating channel of carrying audio data stream is meant for N-1 time: each channel that audio frequency letter machine control module will be carried audio data stream all duplicates N-1 time, obtain the channel of this audio file data stream of N group carrying, include above-mentioned two or more channels of the data flow of this audio file of carrying in each group channel;
Audio frequency letter machine control module is used for respectively the channel of each carrying audio data stream being sent to each corresponding bluetooth earphone according to the address of N the bluetooth earphone that matches and is meant: audio frequency letter machine control module be used for according to the address of N the bluetooth earphone that matches respectively the N group carry the channel that this audio file data flows and send to N bluetooth earphone.
In addition, can also be provided with Digital Signal Processing (DSP) module in the baseband module;
The data flow that baseband module is used to treat shared audio file is carried out coding-decoding operation and is meant: the DSP module is used to treat shared file and decodes, as after judging this and treating that shared file is audio file, then also be used for this is treated that the audio data stream of shared file carries out sub-band coding (SBC), and the SBC audio data stream after will encoding is cached in the inner random asccess memory (RAM); Also be used for after the SBC amount of audio data of judging internal RAM reaches default first buffer memory notice baseband module;
Baseband module is used for from the internal RAM of DSP module the SBC voice data being read after notified, and with these metadata caches in inner static random access memory (SRAM); Also be used for after the SBC amount of audio data of judging SRAM buffer memory on it reaches default second buffering capacity, from SRAM, take out the SBC voice data and this SBC voice data is carried out Bluetooth audio frequency mode agreement (A2DP) transfer encoding once more.
Further, utilize said apparatus to realize the method for multiple users share audio-frequency information, as shown in Figure 2, may further comprise the steps:
(1) after receiving the shared audio file request that the user sends, baseband module calls that coupling and associated program are controlled bluetooth module by the interface between itself and the bluetooth module (can but be not limited to the UART mouth) and bluetooth earphone mates; If match the individual bluetooth earphone of N (wherein, N 〉=2), then note the address of this N bluetooth earphone, and start the bluetooth earphone function of bluetooth module;
(2) baseband module starts built-in DSP (Digital Signal Processing, Digital Signal Processing) module is treated shared file and is decoded, as after judging this and treating that shared file is audio file, then the DSP module treats that to this audio data stream of shared file carries out SBC (SubBand Coding, sub-band coding) coding, and the SBC audio data stream after will encoding is cached among the RAM (Random Access Memory, random asccess memory) of DSP inside modules;
Wherein, the SBC cataloged procedure is meant that the DSP module after treating shared file and decoding, is sent to PCM (Pulse Code Modulation, the pulse-code modulation) signal that obtains after the decoding in the voice data processing unit of this DSP module; This processing unit becomes SBC audio data stream according to the form of SBC with the PCM conversion of signals according to pre-configured SBC coded message.
(3) after the DSP module is judged SBC amount of audio data in the internal RAM and is reached default first buffer memory, the notice baseband module, the SBC voice data is read from the internal RAM of DSP module by baseband module, and with these metadata caches in the SRAM (Static RAM, static random access memory) of baseband module;
(4) after baseband module is judged on it SBC amount of audio data of buffer memory among SRAM and is reached default second buffering capacity, from SRAM, take out the SBC voice data and this SBC voice data is carried out A2DP (Advanced Audio Distribution Profile once more, Bluetooth audio frequency mode agreement) after the transfer encoding, start the interface (as the UART interface) between itself and the bluetooth module, and the SBC voice data after will encoding sends to bluetooth module by this interface;
(5) bluetooth module is sent the SBC voice data that receives into audio frequency letter machine control module by the A2DP link;
(6) after audio frequency letter machine control module is received, initiate address request to baseband module, to obtain the address information of paired Bluetooth headset;
(7) after baseband module was received address request, the address information of N the paired Bluetooth headset that this locality is preserved sent to audio frequency and believes the machine control module;
(8) audio frequency letter machine control module is according to the number N of the paired Bluetooth headset address that receives, channel to the carrying voice data duplicates N-1 time, and respectively the channel of each carrying audio data stream is sent to each corresponding bluetooth earphone according to the address of the N that a matches bluetooth earphone.
Utilize circuit realization as shown in Figure 3 to duplicate the process of voice-grade channel, voice-grade channel S1 is copied as channel S11 and S12 is example, specifically comprise: signal amplification circuit 301 is after receiving the S1 channel, and the audio-frequency information amplification with this channel bearing sends to signal shunt circuit 302 then; After signal shunt circuit 302 is received,, send to signal filter circuit 303 after copying as two identical channels to duplicating through the channel that amplifies; Signal filter circuit 303 is removed the interference that brings for voice-grade channel in the reproduction process, finally obtains two identical channel S11 and S12 respectively.
Existing stereo sound frequency file is divided into left and right acoustic channels, i.e. the audio file data flow that need carry this audio file by two channels (is example with channel S1 and S2).Then the channel that carries audio data stream is duplicated and be meant: respectively channel S1 and S2 are carried out duplicating for N-1 time, obtain N S1 channel and N S2 channel.Then audio frequency letter machine control module can send to this N in N the bluetooth cellular phone to S1, S2 channel respectively, promptly each paired Bluetooth headset all can be subjected to a pair of S1 channel and the S2 channel that is carrying this audio data stream.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (8)
1, a kind of multi-user utilizes the method for bluetooth earphone sharing audio information, is applicable to the portable terminal that has Bluetooth function, it is characterized in that,
After receiving the shared audio file request message that the user sends, described portable terminal detects the number of paired Bluetooth headset and writes down the address information of each paired Bluetooth headset; As the bluetooth earphone that matches has N, then described portable terminal with the duplicating channel of former carrying audio data stream N-1 time after, address according to the N that a matches bluetooth earphone sends to each corresponding bluetooth earphone with the channel of each carrying audio data stream respectively, wherein, and N 〉=2.
2, the method for claim 1 is characterized in that,
Described portable terminal is meant the duplicating channel of former carrying audio data stream for N-1 time: described portable terminal carries out copy operation to this channel again, and after duplicating N-1 time N-1 channel and the former channel that obtains is carried out filtering after earlier described channel being amplified.
3, method as claimed in claim 1 or 2 is characterized in that,
When the data flow of an audio file is carried by two or more channels, then described portable terminal is meant the duplicating channel of former carrying audio data stream for N-1 time: described portable terminal all duplicates each channel of former carrying audio data stream N-1 time, obtain the channel of this audio file data stream of N group carrying, include described two or more channels of the data flow of this audio file of carrying in each group channel;
Respectively the channel of each carrying audio data stream being sent to each corresponding bluetooth earphone according to the address of the N that a matches bluetooth earphone is meant: the channel that described portable terminal will described respectively this audio file data of N group carrying flows according to the address of N the bluetooth earphone that matches sends to a described N bluetooth earphone.
4, a kind of multi-user utilizes the terminal of bluetooth earphone sharing audio information, it is characterized in that, comprising: baseband module, bluetooth module and audio frequency letter machine control module;
Described baseband module is used for after receiving the shared audio file request that the user sends, and sends the coupling order to described bluetooth module; Also be used for receiving described bluetooth module after the address information of the paired Bluetooth headset of its transmission, preserve this information and start the bluetooth earphone function of described bluetooth module; Also be used for when judging the bluetooth earphone that matches and have N, treating the data flow of shared audio file and carrying out coding-decoding operation, and send to described bluetooth module; Also be used for after receiving the address request that described audio frequency letter machine control module is sent, the address information of N the described paired Bluetooth headset of preserving it on sent to described audio frequency believe the machine control module; Wherein, N 〉=2;
Described bluetooth module is used for when receiving described coupling order, searches for and mates bluetooth earphone in its signal cover, and the address information of paired Bluetooth headset is sent to described baseband module; Also be used for sending to described audio frequency letter machine control module by the described audio data stream that channel will be received;
Described audio frequency letter machine control module is used for sending described address request to described baseband module behind the channel of receiving the described audio data stream of carrying; Also be used for after the address information that receives a described N paired Bluetooth headset, behind the duplicating channel of described carrying audio data stream N-1 time, respectively the channel of each carrying audio data stream is sent to each corresponding bluetooth earphone according to the address of the N that a matches bluetooth earphone.
5, terminal as claimed in claim 4 is characterized in that,
Described audio frequency letter machine control module is used for the duplicating channel of described carrying audio data stream is meant for N-1 time: after described audio frequency letter machine control module is used for earlier described channel being amplified, again this channel is carried out copy operation, and N-1 channel and the former channel that obtains carried out filtering duplicating N-1 time.
6, as claim 4 or 5 described terminals, it is characterized in that,
When the data flow of an audio file is carried by two or more channels, then described audio frequency letter machine control module is used for the duplicating channel of described carrying audio data stream is meant for N-1 time: described audio frequency letter machine control module is all duplicated each channel of described carrying audio data stream N-1 time, obtain the channel of this audio file data stream of N group carrying, include described two or more channels of the data flow of this audio file of carrying in each group channel;
Described audio frequency letter machine control module is used for respectively the channel of each carrying audio data stream being sent to each corresponding bluetooth earphone according to the address of N the bluetooth earphone that matches and is meant: described audio frequency letter machine control module is used for will described respectively N group carrying the channel that this audio file data flows according to the address of N the bluetooth earphone that matches and sends to a described N bluetooth earphone.
7, terminal as claimed in claim 4 is characterized in that,
Described baseband module links to each other with bluetooth module by universal asynchronous reception/dispensing device (UART) interface, is connected with described audio frequency letter machine control module by the UART interface; Described bluetooth module is connected with described audio frequency letter machine control module by the audio data transmission interface.
8, terminal as claimed in claim 4 is characterized in that,
Be provided with Digital Signal Processing (DSP) module in the described baseband module;
The data flow that described baseband module is used to treat shared audio file is carried out coding-decoding operation and is meant:
Described DSP module is used for the described shared file for the treatment of is decoded, as after judging this and treating that shared file is audio file, then also be used for this is treated that the audio data stream of shared file carries out sub-band coding (SBC), and the SBC audio data stream after will encoding is cached in the inner random asccess memory (RAM); Also be used for after the SBC amount of audio data of judging internal RAM reaches default first buffer memory, notifying described baseband module;
Described baseband module is used for from the internal RAM of described DSP module the SBC voice data being read after receiving described notice, and these metadata caches are arrived in the inner static random access memory (SRAM); Also be used for after the SBC amount of audio data of judging SRAM buffer memory on it reaches default second buffering capacity, from described SRAM, take out the SBC voice data and this SBC voice data is carried out Bluetooth audio frequency mode agreement (A2DP) transfer encoding once more.
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| WO2020037810A1 (en) * | 2018-08-20 | 2020-02-27 | 南昌黑鲨科技有限公司 | Bluetooth-based audio transmission method and system, audio playing device and computer-readable storage medium |
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| CN113132957B (en) * | 2019-12-31 | 2023-03-10 | 深圳Tcl数字技术有限公司 | Bluetooth audio data transmission method and device, intelligent terminal and storage medium |
| CN112995829A (en) * | 2021-02-25 | 2021-06-18 | 恒玄科技(上海)股份有限公司 | Audio processing assembly for wireless communication and signal processing method thereof |
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