CN105657592B - A kind of audio communication method and device - Google Patents
A kind of audio communication method and device Download PDFInfo
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- CN105657592B CN105657592B CN201410643074.7A CN201410643074A CN105657592B CN 105657592 B CN105657592 B CN 105657592B CN 201410643074 A CN201410643074 A CN 201410643074A CN 105657592 B CN105657592 B CN 105657592B
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Abstract
The application provides a kind of audio communication method and device, one of audio communication method, comprising: receives the first audio signal that mobile terminal is sent with predetermined first traffic rate by earphone channel interface；The 4th audio signal of analog signal form is obtained after handling the first audio signal；The 4th audio signal is sent to mobile terminal with predetermined second traffic rate by microphone interface.The traffic rate of microphone interface is higher than the traffic rate of existing earphone channel interface under normal conditions, therefore the traffic rate between equipment can be improved when sending four audio signals using microphone interface.And predetermined second traffic rate is used when sending four audio signals, mobile terminal can once be properly received and decode the 4th audio signal in this way, signal retransmits the increased probability of bring call duration time when reducing decoding error, further increases traffic rate.
Description
Technical field
This application involves field of communication technology, in particular to a kind of audio communication method and device.
Background technique
With gradually popularizing for external equipment and mobile terminal, the communication of external equipment and mobile terminal is also therewith increasingly
It is taken seriously.Typical communication mode has bluetooth, NFC (Near Field between external equipment and mobile terminal
Communication, near field communication (NFC)) and USB (Universal Serial Bus, universal serial bus), and
And in recent years more and more external equipment producers select the earphone channel interface being had using each mobile terminal as
Signal is sent to movement from external equipment by earphone channel interface by the communication mode between external equipment and mobile terminal
Terminal.
The sample rate of the earphone channel interface of mobile terminal is not high at present, when the communication speed of external equipment and mobile terminal
When degree is higher than the sample rate of earphone channel interface, mobile terminal can be made not enough can not to parse external equipment due to sampled point
The signal of transmission, therefore when carrying out signal communication, communication speed highest is maintained at for external equipment and mobile terminal at present
8Kbps (bit rate).
From described above as can be seen that there are speed using earphone channel interface as the communications carrier for solving communication issue
Slow problem.
Summary of the invention
In view of this, the application provides a kind of audio communication method, to solve in the prior art using earphone as communication
There are slow-footed problems for carrier.
The application also provides a kind of VOCA voice communications assembly, to guarantee the realization and application of the above method in practice.
The technical solution of audio communication method and device provided by the present application is as follows:
On the one hand, the application provides a kind of audio communication method, which comprises
The first audio letter that mobile terminal is sent with predetermined first traffic rate is received by earphone channel interface
Number, the first audio signal is the audio signal of analog signal form；
First audio signal is decoded, the second audio signal of digital signal form is obtained；
According to the second audio signal, determination need to be sent to the third audio signal of the mobile terminal, third audio signal
For the audio signal of digital signal form；
Third audio signal is encoded, the 4th audio signal of analog signal form is obtained；
The 4th audio signal is sent to mobile terminal with predetermined second traffic rate by microphone interface.
Preferably, the waveform of the first audio signal is standard sine wave all-wave, is decoded, obtains to the first audio signal
Second audio signal of digital signal form includes:
It determines the first signal frequency of carrier signal in the first audio signal, is solution code frequency to the with the first signal frequency
One audio signal is decoded, and obtains the second audio signal of digital signal form, the first signal frequency and the first traffic rate
It is corresponding.
Preferably, third audio signal is encoded, the 4th audio signal for obtaining analog signal form includes:
It determines the second signal frequency of carrier signal in third audio signal, is coding frequency to the with second signal frequency
Three audio signals are encoded, and the 4th audio signal of analog signal form, second signal frequency and the second traffic rate are obtained
It is corresponding；And the 4th audio signal waveform be standard sine wave all-wave.
Preferably, it is that coding frequency encodes third audio signal with second signal frequency, obtains analog signal shape
4th audio signal of formula includes:
It is coding frequency with second signal frequency, third audio signal is encoded, obtains the of analog signal form
Five audio signals, the waveform of fifth audio signal are standard sine wave all-wave；
It is sequentially inserted into the carrier signal and transition signal of standard sine wave full wave format in fifth audio signal front end, is obtained
4th audio signal, transition signal are used to indicate the signal after transition signal and are that mobile terminal wants decoded audio signal, and
The signal period of transition signal and the signal period of carrier signal are different.
Preferably, the first traffic rate and the second traffic rate are identical；
The method also includes predefining for: the first traffic rate and the second traffic rate, wherein the first traffic rate
Predetermined with the second traffic rate include:
It receives mobile terminal and sends the first request message for carrying traffic rate；
With the corresponding signal frequency of traffic rate, the first request message is parsed, parsing result is obtained；
When parsing result, which is, indicates the first response message of parsing mistake, the first response message is sent, to indicate to move
Terminal reduces traffic rate, and returns to execute and receive the first request message that mobile terminal transmission carries traffic rate, wherein
The traffic rate in the first request message received is the traffic rate after reducing；
When parsing result, which is, to be indicated to parse correct second response message, by the communication carried in the first request message speed
Rate is as the first traffic rate and the second traffic rate.
Preferably, the first traffic rate and the second traffic rate are different；
The method also includes predefining for: the first traffic rate and the second traffic rate, wherein the first traffic rate
Predetermined include:
It receives mobile terminal and sends the first request message for carrying traffic rate；
When obtaining indicating to parse correct third response message according to the first request message, indicate mobile terminal by first
Traffic rate in request message is as the first traffic rate；
When obtaining indicating four response message of parsing mistake according to the first request message, sends the 4th response message and refer to
Show that mobile terminal reduces traffic rate, and returns to execute and receive the first request report that mobile terminal transmission carries traffic rate
Text, wherein the traffic rate in the first request message received is the traffic rate after reducing；
The predetermined of second traffic rate include:
It sends and carries the second request message of third communication rate to mobile terminal；
When receiving five response message for being used to indicate parsing mistake of mobile terminal feedback, reduces the second request and report
Text carry third communication rate to receive mobile terminal feedback it is corresponding with the second request message and for indicate parse just
The 4th true response message；
When receiving when parsing correct six response message for expression of mobile terminal feedback, by the 6th response message
The third communication rate carried in corresponding second request message is as the second traffic rate.
On the other hand, the application also provides a kind of VOCA voice communications assembly, and described device includes:
Earphone channel interface, the first audio letter sent for receiving mobile terminal with predetermined first traffic rate
Number, first audio signal is the audio signal of analog signal form；
Audio coding decoding module obtains the second audio of digital signal form for being decoded to the first audio signal
Signal；And for encoding to third audio signal, obtain the 4th audio signal of analog signal form, third audio letter
Number the audio signal of mobile terminal is sent to for the need that determine according to the second audio signal；
Data processing module, for the second audio signal of foundation, determination need to be sent to the third audio signal of mobile terminal,
Third audio signal is the audio signal of digital signal form；
Microphone interface, for sending the 4th audio signal to mobile terminal with predetermined second traffic rate.
Preferably, the audio coding decoding module includes audio decoding unit；
Audio decoding unit, for determining the first signal frequency of carrier signal in the first audio signal, with the first signal
Frequency is that solution code frequency is decoded the first audio signal, obtains the second audio signal of digital signal form, the first signal
Frequency is corresponding with the first traffic rate.
Preferably, audio coding decoding module further includes audio coding unit；
The audio coding unit, for determining the second signal frequency of carrier signal in third audio signal, with second
Signal frequency is that coding frequency encodes third audio signal, obtains the 4th audio signal of analog signal form, second
Signal frequency is corresponding with the second traffic rate；And the 4th audio signal waveform be standard sine wave all-wave.Preferably, audio
Coding unit includes: audio coding subelement and signal insertion subelement；
The audio coding subelement compiles third audio signal for being coding frequency with second signal frequency
Code, obtains the fifth audio signal of analog signal form, and the waveform of fifth audio signal is standard sine wave all-wave；
Signal is inserted into subelement, for being sequentially inserted into the carrier wave of standard sine wave full wave format in fifth audio signal front end
Signal and transition signal, obtain the 4th audio signal, and it is mobile terminal that transition signal, which is used to indicate the signal after transition signal,
Decoded audio signal is wanted, and the signal period of transition signal is different from the signal period of carrier signal.
Preferably, described device further include:
First receiving module carries the first request message of traffic rate for receiving mobile terminal transmission；
Parsing module obtains parsing result for parsing to the first request message；
First sending module is corresponding with the first request message and for indicating parsing mistake for sending parsing result
First response message to indicate that mobile terminal reduces traffic rate, and triggers the first receiving module and receives what mobile terminal was sent
The first request message to the parsing result for carrying the traffic rate after reducing is corresponding with the first request message and for indicating
Parse correct second response message；
Second sending module carries the second request message of traffic rate to mobile terminal for sending；
Second receiving module, for receiving the corresponding with the second request message of mobile terminal feedback and being solved for expression
Wrong third response message is analysed, it is mobile whole to receiving that instruction processing module reduces the traffic rate that the second request message carries
Hold the corresponding with the second request message of feedback and for indicating to parse correct 4th response message；
Processing module, the traffic rate for will carry in corresponding first request message of the second response message is as in advance
The first determining traffic rate, and the traffic rate work for will be carried in corresponding second request message of the 4th response message
For predetermined second traffic rate.
Compared with prior art, the application includes following advantages:
In this application, receive what mobile terminal was sent with predetermined first traffic rate by earphone channel interface
First audio signal；The 4th audio signal of analog signal form is obtained after handling the first audio signal；Then pass through
Microphone interface sends the 4th audio signal to mobile terminal with predetermined second traffic rate.Microphone interface under normal conditions
Traffic rate be higher than existing earphone channel interface traffic rate, therefore using microphone interface send four audio signals when
The traffic rate between equipment can be improved.And when sending four audio signals using predetermined second communication speed
Rate, such mobile terminal can once be properly received and decode the 4th audio signal, and signal retransmits when reducing decoding error
The increased probability of bring call duration time, further increases traffic rate.
Certainly, implement either the application method not necessarily requiring achieving all the advantages described above at the same time.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of a kind of flow chart of audio communication method provided by the embodiments of the present application；
Fig. 2 is a kind of electronic equipment schematic diagram that audio communication method is applied to provided by the embodiments of the present application；
Fig. 3 is the first audio signal and the second audio signal in a kind of audio communication method provided by the embodiments of the present application
Schematic diagram；
Fig. 4 is the schematic diagram of carrier signal and transition signal in a kind of audio communication method provided by the embodiments of the present application；
Fig. 5 determines the first traffic rate and the second traffic rate when being the first traffic rate and not identical the second traffic rate
Flow chart；
Fig. 6 determines the first traffic rate and the second traffic rate when being the first traffic rate and identical the second traffic rate
Flow chart；
Fig. 7 is a kind of a kind of structural schematic diagram of VOCA voice communications assembly provided by the embodiments of the present application；
Fig. 8 is a kind of a kind of structural representation of VOCA voice communications assembly sound intermediate frequency coding/decoding module provided by the embodiments of the present application
Figure；
Fig. 9 is a kind of a kind of structural representation of VOCA voice communications assembly sound intermediate frequency coding unit provided by the embodiments of the present application
Figure；
Figure 10 is in a kind of VOCA voice communications assembly provided by the embodiments of the present application for determining the correlation module of traffic rate
A kind of structural schematic diagram.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
Referring to Fig. 1, it illustrates a kind of flow chart of audio communication method of the embodiment of the present application, sound shown in FIG. 1
Frequency communication means can be applied in electronic equipment shown in Fig. 2, and the electronic equipment can carry out signal with mobile terminal and lead to
Letter.
Wherein electronic equipment shown in Fig. 2 includes: MCU (Micro Controller Unit, micro-control unit), audio
Coding/decoding module, earphone channel interface and MIC (Microphone, Mike) interface, audio coding decoding module are used to believe audio
Number coded and decoded, MCU be used to pass to the audio signal for needing to be sent to mobile terminal audio coding decoding module into
Row coding.And the arrow direction in Fig. 2 represents signal communication direction and electronics between electronic equipment and mobile terminal
Signal communication direction inside equipment.
Arrow 21 indicates that electronic equipment receives the audio signal that mobile terminal is sent, 22 table of arrow by earphone channel interface
Show electronic equipment by MIC interface to mobile terminal send audio signal, four-headed arrow 23 then indicate electronic equipment internal MCU and
Signal communication between audio coding decoding module.
It is logical to audio shown in Fig. 1 provided by the embodiments of the present application below then using electronic equipment shown in Fig. 2 as executing subject
Letter method is described in detail, and in order to distinguish the audio signal transmitted between electronic equipment and mobile terminal, using first
Audio signal, the second voice-frequency signalling distinguish.Above-mentioned audio communication method shown in FIG. 1 the following steps are included:
101: the first sound that mobile terminal is sent with predetermined first traffic rate is received by earphone channel interface
Frequency signal.
Wherein predetermined first traffic rate is that electronic equipment and mobile terminal determine before carrying out signal communication
Traffic rate, the traffic rate may insure electronic equipment after receiving audio signal to audio signal be correctly decoded with
And ensure that mobile terminal carries out correct coding to audio signal before sending audio signal.
It is to be understood that the first audio signal is the audio signal of analog signal form.So-called analog signal refers to letter
Breath parameter shows as continuous signal in given range.And audio signal refers to the regular of voice, music and audio
The frequency of sound wave, amplitude change information carrier.In the present embodiment, the first audio signal is by between mobile terminal and electronic equipment
Earphone channel interface transmission.First audio signal is sent to audio coding decoding module and handled by earphone channel interface.
102: the first audio signal being decoded, the second audio signal of digital signal form is obtained.
103: according to the second audio signal, determination need to be sent to the third audio signal of mobile terminal, third audio signal
For the audio signal of digital signal form.
Under normal conditions, the signal transmitted between electronic equipment and mobile terminal is analog signal, and electronic equipment internal
The signal transmitted between disparate modules is digital signal, therefore audio coding decoding module needs after receiving the first audio signal
It is decoded to obtain the second audio signal of digital signal form, and the second audio signal is sent to MCU, by MCU
The information for needing to feed back to mobile terminal is determined according to the information carried in the second audio signal, and will be feedbacked to mobile terminal
Information be carried in the third audio signal of digital signal form and be sent to audio coding decoding module.
104: third audio signal being encoded, the 4th audio signal of analog signal form is obtained.
In the embodiment of the present application, the information carried in third audio signal and the 4th audio signal is identical, difference
It is only that third audio signal is different with the signal form of the 4th audio signal, the third audio signal of analog signal form is compiled
Code is that the 4th audio signal of analog signal form is can be transferred to mobile terminal for the ease of the 4th audio signal.
Need to propose herein is a bit, can be between electronic equipment and mobile terminal when carrying out signal communication
Using some standard cryptographic application operatings, such as encryption, decryption, signature and sign test；Wherein encrypt and decrypt operation can be real
Authentication of the data in reception or transmission may be implemented in existing Data Encryption Transmission, signature and sign test operation, improves communication
Safety.Certain audio communication method provided by the embodiments of the present application also can be applied to the scene of data encryption and authentication
In, to promote the application scenarios and user experience of electronic equipment.
105: the 4th audio signal is sent to mobile terminal with predetermined second traffic rate by microphone interface.
Wherein predetermined second traffic rate is that electronic equipment and mobile terminal determine before carrying out signal communication
Traffic rate, the traffic rate may insure electronic equipment before sending audio signal to audio signal carry out correct coding and
Ensure that mobile terminal is correctly decoded audio signal after receiving audio signal.
Using above-mentioned technical proposal, mobile terminal is received with predetermined first communication by earphone channel interface first
The first audio signal that rate is sent；The 4th audio letter of analog signal form is obtained after handling the first audio signal
Number；Then the 4th audio signal is sent to mobile terminal with predetermined second traffic rate by microphone interface.Usual feelings
The traffic rate of microphone interface is higher than the traffic rate of existing earphone channel interface under condition, therefore is sending the using microphone interface
The traffic rate between equipment can be improved when four audio signals.And when sending four audio signals using predetermined
Traffic rate, such mobile terminal can once be properly received and decode the 4th audio signal, signal weight when reducing decoding error
It is new to send the increased probability of bring call duration time, further increase traffic rate.
Furthermore the waveform of the first audio signal and the 4th audio signal transmitted between electronic equipment and mobile terminal can be with
Using any one waveform in standard sine wave all-wave, sine wave half-wave and square wave.But inventor is complete to standard sine wave
The laser propagation effect of wave, sine wave half-wave and square wave carries out test of many times and comparison, finds standard sine wave all-wave in communication process
In stability and anti-interference be better than other two waveforms, so the first audio signal and the 4th sound in the embodiment of the present application
The waveform of frequency signal is preferably standard sine wave all-wave, to improve the stability and anti-interference of signal, when the stability of signal
After improving with anti-interference, the quality and speed of signal communication are also correspondinglyd increase.
In the embodiment of the present application, if wanting to be correctly decoded must use with movement eventually with coded audio signal, electronic equipment
The solution code frequency for holding identical coding frequency, the solution code frequency for moving equally terminal use also must be with the coding frequency of electronic equipment
Rate is identical, therefore identical in order to guarantee to encode frequency reconciliation code frequency in the embodiment of the present application, is compiled with signal frequency to identify
Code frequency conciliates code frequency, and signal frequency is corresponding with traffic rate.
In order to enable electronic equipment and mobile terminal correctly to obtain signal frequency, the first audio in the embodiment of the present application
Signal and the 4th audio signal can using mode shown in Fig. 3, the first audio signal and the 4th audio signal include carrier signal,
Transition signal and audio signal, wherein the signal frequency in carrier signal is corresponding with traffic rate, and transition signal is used to indicate
Signal after transition signal is that mobile terminal wants decoded audio signal, and the signal period of transition signal and carrier signal
Signal period is different, and audio signal is then used for transmission actual information.Based on the signal of such form, the first audio signal and third
The treatment process of audio signal is as follows:
It determines the first signal frequency of carrier signal in the first audio signal, is solution code frequency to the with the first signal frequency
One audio signal is decoded, and obtains the second audio signal of digital signal form, wherein the first signal frequency is communicated with first
Rate is corresponding.
It is equally that analog signal is obtained for coding frequency with second signal frequency when being encoded to third audio signal
4th audio signal of form, second signal frequency is corresponding with the second traffic rate, and cataloged procedure is as follows:
It is first coding frequency with second signal frequency, third audio signal is encoded, analog signal form is obtained
Fifth audio signal, the waveform of fifth audio signal is standard sine wave all-wave；Secondly fifth audio signal front end successively
It is inserted into the carrier signal and transition signal of standard sine wave full wave format, obtains the 4th audio signal, transition signal is used to indicate
Signal after transition signal is that mobile terminal wants decoded audio signal, and the signal period of transition signal and carrier signal
Signal period is different.
It is sequentially inserted into the carrier signal and transition signal of standard sine wave full wave format in the front end of fifth audio signal, by
This entire waveform can be divided into Carrier section, transition portion and data portion.The wherein signal period of transition signal and load
The signal period of wave signal is different, carrier signal and transition signal as shown in Figure 4, and wherein BIT1 indicates the signal of carrier signal
Period, BIT2 indicate the signal period of transition signal.Carrier signal and transition signal can be distinguished according to period difference in this way, prompted
Equipment is handled audio signal after transition signal.
It need to be noted that be a bit: no audio signal transmission when, transmitted between electronic equipment and mobile terminal
It is carrier signal, when monitoring other signal periods different from the signal period of carrier signal, shows the letter transmitted at this time
Include audio signal in number, then starts to carry out encoding and decoding processing to subsequent audio signal.
In order to guarantee to receive that mobile terminal is sent with predetermined first traffic rate by earphone channel interface
One audio signal and by microphone interface with predetermined second traffic rate send the 4th audio signal, the application implement
Example provides a kind of feasible pattern of determining traffic rate, when the first traffic rate and not identical the second traffic rate, such as Fig. 5 institute
Show, may comprise steps of:
501: receiving mobile terminal and send the first request message for carrying traffic rate.Wherein the first request message passes through
Earphone channel interface receives, and the traffic rate carried in the first request message is highest traffic rate, so-called highest
Traffic rate refers to that the most fast traffic rate that can be used between electronic equipment and mobile terminal connects on earphone channel interface
Receive audio signal.
502: the data in the first request message being decoded, obtain verification data, and verification data are asked with first
The verification data in the check byte of message are asked to be compared.
503: whether the verification data in verification data and check byte judged are identical, if not, executing step
504, if so, executing step 505.
When obtained verification data are identical with verification data in check byte, show that electronic equipment can be parsed correctly
It can be logical by earphone channel interface with highest traffic rate between first request message, i.e. electronic equipment and mobile terminal
Letter.
When obtained verification data and verification data difference in check byte, show that electronic equipment can not be solved correctly
The first request message is analysed, that is, needs to reduce the traffic rate between electronic equipment and mobile terminal, is sent at this time and the first request
Message is corresponding and for indicating the 4th wrong response message of parsing, to indicate that mobile terminal reduces traffic rate.
504: when obtaining indicating four response message of parsing mistake according to the first request message, sending the 4th response message
It indicates that mobile terminal reduces traffic rate, and returns to step 501 reception mobile terminals and send and carry the of traffic rate
One request message, wherein the traffic rate in the first request message received is the traffic rate after reducing.
505: when obtaining indicating to parse correct third response message according to the first request message, instruction mobile terminal is by the
Traffic rate in one request message is as the first traffic rate.
The first traffic rate for obtaining being communicated between electronic equipment and mobile terminal by earphone channel interface it
Afterwards, it needs to further determine that and the second traffic rate communicated is received by Mike between electronic equipment and mobile terminal,
Determination process following steps 506 are to step 508.
506: the second request message being sent to mobile terminal by microphone interface, wherein carrying the in the second request message
Three traffic rates, the third communication rate are most fast by what is used when microphone interface communication between electronic equipment and mobile terminal
Traffic rate.
Mobile terminal receives the second request message, is decoded to the data in the second request message, obtains verification data,
And verification data are compared with the verification data in the check byte of the second request message, and send phase according to comparison result
The second response message answered is to electronic equipment.
507: when receiving five response message for being used to indicate parsing mistake of the mobile terminal feedback, reducing institute
State the third communication rate of the second request message carrying, return step 506.
If the 5th response message received still indicates that the second request message parses mistake, continue to reduce communication speed
Rate, and the traffic rate after reduction is carried in the second request message until receiving and is used to indicate to parse correct 6th sound
Answer message.
508:, will be described when receiving when parsing correct six response message for expression of the mobile terminal feedback
The third communication rate carried in corresponding second request message of 6th response message is as the second traffic rate.
When the first traffic rate and identical the second traffic rate, the first traffic rate and the second traffic rate were determined
Journey is as shown in fig. 6, may comprise steps of:
601: receiving mobile terminal and send the first request message for carrying traffic rate.
Wherein the first request message is received by earphone channel interface, and the traffic rate carried in the first request message
For highest traffic rate, so-called highest traffic rate refer to can be used between electronic equipment and mobile terminal it is most fast
Traffic rate receives audio signal on earphone channel interface.
602: with signal frequency corresponding with the traffic rate carried in the first message, the first request message being solved
Analysis, obtains parsing result.
603: when parsing result, which is, indicates the first response message of parsing mistake, the first response message is sent, with instruction
Mobile terminal reduces traffic rate, and return step 601, and the traffic rate in the first request message received at this time is to reduce
Traffic rate afterwards.
After mobile terminal receives the first response message, traffic rate is reduced, and sends carry leading to after reducing again
The first request message of rate is believed until receiving expression parses correct second response message.
604: logical by what is carried in the first request message when parsing result, which is, to be indicated to parse correct second response message
Believe rate as the first traffic rate and the second traffic rate.
In above-mentioned steps, when being reduced to traffic rate, it can successively be carried out according to 1,1/2,1/4,1/6,1/8 ratio
It reduces；It being corresponding in turn to reduction ratio, one grade of traffic rate is highest traffic rate, and two grades are one grade of half, four
Shelves are one grade of a quarters, and so on.And while reducing traffic rate, signal frequency also can according to traffic rate into
Row changes.
Herein it should be pointed out that the traffic rate of microphone interface is the hardware feature by mobile terminal and electronic equipment
Come what is determined.Specifically, when the Mike's higher gears and better performances of mobile terminal and electronic equipment, the mobile terminal and electricity
Sub- equipment can carry out signal communication by microphone interface with higher traffic rate；As the Mike of mobile terminal and electronic equipment
Compared with keeping out and when performance is poor, the mobile terminal and electronic equipment can carry out letter by microphone interface with lower traffic rate
Signal communication.
For the various method embodiments described above, for simple description, therefore, it is stated as a series of action combinations, but
Be those skilled in the art should understand that, the application is not limited by the described action sequence because according to the application, certain
A little steps can be performed in other orders or simultaneously.Secondly, those skilled in the art should also know that, it is retouched in specification
The embodiment stated belongs to preferred embodiment, necessary to related actions and modules not necessarily the application.
Corresponding with above method embodiment, the embodiment of the present application also provides a kind of VOCA voice communications assembly, voice communication dress
A kind of structural schematic diagram for setting as shown in fig. 7, comprises: earphone channel interface 11, audio coding decoding module 12, data processing module
13 and microphone interface module 14.Wherein:
Earphone channel interface 11, the first audio sent for receiving mobile terminal with predetermined first traffic rate
Signal, the first audio signal are the audio signal of analog signal form.
Wherein predetermined first traffic rate is that electronic equipment and mobile terminal determine before carrying out signal communication
Traffic rate, the traffic rate may insure electronic equipment after receiving audio signal to audio signal be correctly decoded with
And ensure that mobile terminal carries out correct coding to audio signal before sending audio signal.
It is to be understood that the first audio signal is the audio signal of analog signal form.So-called analog signal refers to letter
Breath parameter shows as continuous signal in given range.And audio signal refers to the regular of voice, music and audio
The frequency of sound wave, amplitude change information carrier.In the present embodiment, the first audio signal is by earphone channel interface 11 mobile whole
It is transmitted between end and VOCA voice communications assembly, and the first audio signal is sent to audio coding decoding module 12 by earphone channel interface
It is handled.
Audio coding decoding module 12 obtains the second sound of digital signal form for being decoded to the first audio signal
Frequency signal；And for encoding to third audio signal, obtain the 4th audio signal of analog signal form, third audio
Signal is the audio signal that the need determined according to the second audio signal are sent to mobile terminal.
Data processing module 13, for according to the second audio signal, determination need to be sent to the third audio letter of mobile terminal
Number, third audio signal is the audio signal of digital signal form.
Under normal conditions, the signal transmitted between the VOCA voice communications assembly and mobile terminal in the present embodiment is simulation letter
Number, and the signal transmitted between disparate modules inside the VOCA voice communications assembly is digital signal, therefore audio coding decoding module 12
After receiving the first audio signal, need to be decoded it to obtain the second audio signal of digital signal form, and by
Two audio signals are sent to data processing module 13, by data processing module 13 according to the information carried in the second audio signal come
Determine the information for needing to feed back to mobile terminal, and the information that will be feedbacked to mobile terminal is carried on the third of digital signal form
Audio coding decoding module 12 is sent in audio signal.
Microphone interface 14, for sending the 4th audio signal to mobile terminal with predetermined second traffic rate.
In the embodiment of the present application, the information carried in third audio signal and the 4th audio signal is identical, difference
It is only that third audio signal is different with the signal form of the 4th audio signal, the third audio signal of analog signal form is compiled
Code is that the 4th audio signal of analog signal form is can be transferred to mobile terminal for the ease of the 4th audio signal.
Need to propose herein is a little to carry out letter between the VOCA voice communications assembly and mobile terminal in the present embodiment
When signal communication, some standard cryptographic application operatings, such as encryption, decryption, signature and sign test can also be used；Wherein encryption and
Data Encryption Transmission may be implemented in decryption oprerations, and identity of the data in reception or transmission may be implemented in signature and sign test operation
Verifying improves communications security.Certain VOCA voice communications assembly provided by the embodiments of the present application also can be applied to data encryption and
In the scene of authentication, to promote the application scenarios and user experience of the device.
Wherein above-mentioned predetermined second communication frequency is that VOCA voice communications assembly and mobile terminal are carrying out signal communication
The traffic rate of preceding determination, the traffic rate may insure that VOCA voice communications assembly carries out audio signal before sending audio signal
Correct coding and ensure that mobile terminal is correctly decoded audio signal after receiving audio signal.
Using above-mentioned technical proposal, mobile terminal is received with predetermined first communication by earphone channel interface first
The first audio signal that rate is sent；The 4th audio letter of analog signal form is obtained after handling the first audio signal
Number；Then the 4th audio signal is sent to mobile terminal with predetermined second traffic rate by microphone interface.Usual feelings
The traffic rate of microphone interface is higher than the traffic rate of existing earphone channel interface under condition, therefore is sending the using microphone interface
The traffic rate between equipment can be improved when four audio signals.And when sending four audio signals using predetermined
Traffic rate, such mobile terminal can once be properly received and decode the 4th audio signal, signal weight when reducing decoding error
It is new to send the increased probability of bring call duration time, further increase traffic rate.
Furthermore the wave of the first audio signal and the 4th audio signal transmitted between the VOCA voice communications assembly and mobile terminal
Shape can be using any one waveform in standard sine wave all-wave, sine wave half-wave and square wave.But inventor to standard just
The laser propagation effect of string wave all-wave, sine wave half-wave and square wave carries out test of many times and comparison, and discovery standard sine wave all-wave is logical
Stability and anti-interference during letter are better than other two waveforms, thus in the embodiment of the present application the first audio signal and
The waveform of 4th audio signal is preferably standard sine wave all-wave, to improve the stability and anti-interference of signal, when signal
After stability and anti-interference improve, the quality and speed of signal communication are also correspondinglyd increase.
In the embodiment of the present application, if wanting that coding/decoding module 12 is enable to be correctly decoded and coded audio signal, this implementation
Must use identical signal frequency between VOCA voice communications assembly and mobile terminal in example, and the device and mobile terminal into
Using identical traffic rate when row signal communication, therefore can be determined in the embodiment of the present application by traffic rate
Signal frequency, so that signal frequency can be corresponding with traffic rate.
In order to enable the device and mobile terminal correctly to obtain signal frequency, the first audio is believed in the embodiment of the present application
Number and the 4th audio signal can be using mode shown in Fig. 3, the first audio signal and the 4th audio signal include carrier signal, mistake
Signal and audio signal are crossed, wherein the signal frequency in carrier signal is corresponding with traffic rate, and transition signal was used to indicate
The signal crossed after signal is that mobile terminal wants decoded audio signal, and the letter of the signal period of transition signal and carrier signal
Number period difference, audio signal are then used for transmission actual information.
Referring to Fig. 8, it illustrates a kind of structural schematic diagram of the embodiment of the present application sound intermediate frequency coding/decoding module 12, audio
Coding/decoding module 12 includes: audio decoding unit 121 and audio coding unit 122.Wherein:
Audio decoding unit 121, for determining the first signal frequency of carrier signal in the first audio signal, with the first letter
Number frequency is that solution code frequency is decoded the first audio signal, obtains the second audio signal of digital signal form, the first letter
Number frequency is corresponding with the first traffic rate.
Audio coding unit 122, for determining the second signal frequency of carrier signal in third audio signal, with the second letter
Number frequency is that coding frequency encodes third audio signal, obtains the 4th audio signal of digital signal form, the second letter
Number frequency is corresponding with the second traffic rate；And the 4th audio signal waveform be standard sine wave all-wave.
Specific audio coding unit 122 can take structural schematic diagram as shown in Figure 9, and audio coding unit 122 can
To include: audio coding subelement 1221 and signal insertion subelement 1222, in which:
Audio coding subelement 1221 compiles third audio signal for being coding frequency with second signal frequency
Code, obtains the fifth audio signal of analog signal form, and the waveform of fifth audio signal is standard sine wave all-wave.
Signal is inserted into subelement 1222, for being sequentially inserted into standard sine wave full wave format in fifth audio signal front end
Carrier signal and transition signal, obtain the 4th audio signal, and it is movement that transition signal, which is used to indicate the signal after transition signal,
Terminal wants decoded audio signal, and the signal period of transition signal is different from the signal period of carrier signal.
Signal is inserted into subelement 1222 and is sequentially inserted into the carrier wave of standard sine wave full wave format in fifth audio signal front end
Signal and transition signal, obtain the 4th audio signal, and it is mobile terminal that transition signal, which is used to indicate the signal after transition signal,
Decoded audio signal is wanted, and the signal period of transition signal is different from the signal period of carrier signal.
It is sequentially inserted into the carrier signal and transition signal of standard sine wave full wave format in the front end of fifth audio signal, by
This entire waveform can be divided into Carrier section, transition portion and data portion.The wherein signal period of transition signal and load
The signal period of wave signal is different, carrier signal and transition signal as shown in Figure 4, and wherein BIT1 indicates the signal of carrier signal
Period, BIT2 indicate the signal period of transition signal.Carrier signal and transition signal can be distinguished according to period difference in this way, prompted
The VOCA voice communications assembly of the present embodiment is handled audio signal after transition signal.
It need to be noted that be a bit: no audio signal transmission when, between the device and mobile terminal of the present embodiment
Transmission is carrier signal, when monitoring other signal periods different from the signal period of carrier signal, shows to pass at this time
Include audio signal in defeated signal, then starts to carry out encoding and decoding processing to subsequent audio signal.
In order to guarantee to receive that mobile terminal is sent with predetermined first traffic rate by earphone channel interface
One audio signal and microphone interface 14 can send the 4th audio signal with predetermined second traffic rate, and the application is real
Example is applied also it needs to be determined that traffic rate；Referring to Fig. 10, implementing to be used in the VOCA voice communications assembly provided it illustrates the application
Determine the correlation module of traffic rate, comprising: the first receiving module 15, parsing module 16, the first sending module 17, processing module
18, the second sending module 19 and the second receiving module 20.Wherein:
First receiving module 15 carries the first request message of traffic rate for receiving mobile terminal transmission.
First receiving module 15 receives mobile terminal and sends the first request message for carrying traffic rate.Wherein first ask
The traffic rate asked message to receive by earphone channel interface, and carried in the first request message is highest traffic rate,
So-called highest traffic rate refers to the most fast traffic rate that can be used between electronic equipment and mobile terminal in earphone sound
Audio signal is received on pipeline joint.
Parsing module 16 obtains parsing result for parsing to the first request message.Wherein parsing module 16 is to
Data in one request message are decoded, and obtain verification data, and the check byte that will verify data and the first request message
In verification data be compared.Judge whether the verification data in obtained verification data and check byte are identical, solved
Analyse result.
When the verification data in obtained verification data and check byte are not identical, show that the audio in the present embodiment is logical
T unit can not correctly parse the first request message, that is, need to reduce the traffic rate between the device and mobile terminal, therefore
Parsing result is the first response message corresponding with the first request message and for indicating parsing mistake at this time, mobile eventually with instruction
End reduces traffic rate.When obtained verification data are identical with verification data in check byte, show in the present embodiment
VOCA voice communications assembly can correctly parse the first request message, i.e. the VOCA voice communications assembly can be passed through with highest traffic rate
Earphone channel interface receives the message that mobile terminal is sent, then parsing result is corresponding with the first request message and for indicating
Correct response message is parsed, and in next step then needs mobile terminal whether can be properly received VOCA voice communications assembly transmission
Request message analyzed, specifically can be refering to the related description of flow chart shown in Fig. 5 in embodiment of the method.
First sending module 17, it is corresponding with the first request message and for indicating that parsing is wrong for sending parsing result
First response message to indicate that mobile terminal reduces the traffic rate, and triggers the first receiving module 15 and receives mobile terminal
The first request message for carrying the traffic rate after reducing to the parsing result of transmission is corresponding with the first request message and uses
Correct second response message is parsed in expression.
If indicating that the verification data in obtained verification data and check byte are not identical in parsing result, the first hair
Module 17 is sent to send the first response message corresponding with the first request message and for indicating parsing mistake, to indicate mobile terminal
Traffic rate is reduced, and triggers the first receiving module 15 and receives carry the traffic rate after reducing that mobile terminal is sent
One request message.Until the verification data that parsing result indicates are identical with the verification data in check byte, first is sent
Module 17 sends corresponding with the first request message and parses correct second response message for expression.
Second sending module 19, for sending the second request message to mobile terminal；Wherein the second sending module 19 passes through
Microphone interface sends the second request message to mobile terminal.
Mobile terminal receives the second request message, is decoded to the data in the second request message, obtains verification data,
And verification data are compared with the verification data in the check byte of the second request message, and send phase according to comparison result
The second response message answered is to the VOCA voice communications assembly in this implementation.
Second receiving module 20, for receiving the corresponding with the second request message of mobile terminal feedback and being used to indicate
The third response message of mistake is parsed, it is anti-to mobile terminal is received that instruction reduces the traffic rate carried in the second request message
Feedback corresponding with the second request message and for indicating correct 4th response message of parsing, and by processing module 18 by the 4th sound
Answer the traffic rate carried in corresponding second request message of message as predetermined traffic rate.
Processing module 18, the traffic rate for will carry in corresponding first request message of the second response message is as pre-
The first traffic rate first determined, and the traffic rate for will be carried in corresponding second request message of the 4th response message
As predetermined second traffic rate.
Herein it may be noted that be a little that for above-mentioned module when determining traffic rate, there are two kinds of situations: one, first
Traffic rate and the second traffic rate are identical；Two, the first traffic rate and the second traffic rate be not identical, and user can be as needed
Carry out selection setting.
Processing module 17 can successively be dropped when reducing traffic rate according to 1,1/2,1/4,1/6,1/8 ratio
It is low；It is corresponding in turn to reduction ratio, one grade of traffic rate is highest traffic rate, and two grades are one grade of half, fourth gear
It is one grade of a quarter, and so on.And while reducing traffic rate, signal frequency can also be carried out according to traffic rate
Change.
Herein it should be pointed out that the traffic rate of microphone interface 14 is by the audio in mobile terminal and the present embodiment
The hardware feature of communication device determines.Specifically, when the wheat of the VOCA voice communications assembly in mobile terminal and the present embodiment
When gram higher gears and better performances, VOCA voice communications assembly in the mobile terminal and the present embodiment can by microphone interface with compared with
High traffic rate carries out signal communication；When the Mike of the VOCA voice communications assembly in mobile terminal and the present embodiment relatively keeps out and property
When can be poor, the VOCA voice communications assembly in the mobile terminal and the present embodiment can be by microphone interface with lower traffic rate
Carry out signal communication.
A kind of audio communication method provided herein and device are described in detail above, it is used herein
The principle and implementation of this application are described for specific case, and the above embodiments are only used to help understand originally
The method and its core concept of application；At the same time, for those skilled in the art, according to the thought of the application, specific
There will be changes in embodiment and application range, in conclusion the content of the present specification should not be construed as to the application's
Limitation.
Claims (10)
1. a kind of audio communication method, which is characterized in that the described method includes:
The first audio signal that mobile terminal is sent with predetermined first traffic rate, institute are received by earphone channel interface
State the audio signal that the first audio signal is analog signal form；
First audio signal is decoded, the second audio signal of digital signal form is obtained；
According to second audio signal, determination need to be sent to the third audio signal of the mobile terminal, the third audio
Signal is the audio signal of digital signal form；
The third audio signal is encoded, the 4th audio signal of analog signal form is obtained；
The 4th audio signal is sent to the mobile terminal with predetermined second traffic rate by microphone interface；
Wherein, when first traffic rate is identical with second traffic rate, first traffic rate and described
Two traffic rates predefine, wherein first traffic rate and the predetermined of the second traffic rate include:
It receives mobile terminal and sends the first request message for carrying traffic rate；
With the corresponding signal frequency of the traffic rate, first request message is parsed, parsing result is obtained；
When the parsing result, which is, indicates the first response message of parsing mistake, first response message is sent, with instruction
The mobile terminal reduces the traffic rate, and returns to execution and receive mobile terminal transmission and carry the first of traffic rate and ask
Message is sought, wherein the traffic rate in the first request message received is the traffic rate after reducing；
It is logical by what is carried in first request message when the parsing result, which is, to be indicated to parse correct second response message
Believe rate as first traffic rate and second traffic rate.
2. the method according to claim 1, wherein the waveform of first audio signal is that standard sine wave is complete
Wave is decoded first audio signal, and the second audio signal for obtaining digital signal form includes:
It determines the first signal frequency of carrier signal in first audio signal, is solution code frequency with first signal frequency
First audio signal is decoded, obtains the second audio signal of digital signal form, first signal frequency with
First traffic rate is corresponding.
3. according to the method described in claim 2, being simulated it is characterized in that, encoded to the third audio signal
4th audio signal of signal form includes:
It determines the second signal frequency of carrier signal in the third audio signal, is coding frequency with the second signal frequency
The third audio signal is encoded, obtains the 4th audio signal of analog signal form, the second signal frequency with
Second traffic rate is corresponding；And the waveform of the 4th audio signal is standard sine wave all-wave.
4. according to the method described in claim 3, it is characterized in that, being coding frequency to described the with the second signal frequency
Three audio signals are encoded, and the 4th audio signal for obtaining analog signal form includes:
It is coding frequency with the second signal frequency, the third audio signal is encoded, analog signal form is obtained
Fifth audio signal, the waveform of the fifth audio signal is standard sine wave all-wave；
It is sequentially inserted into the carrier signal and transition signal of standard sine wave full wave format in fifth audio signal front end, is obtained
4th audio signal, it is that the mobile terminal wants decoded that the transition signal, which is used to indicate the signal after transition signal,
Audio signal, and the signal period of the transition signal is different from the signal period of the carrier signal.
5. the method according to claim 1, wherein first traffic rate and second traffic rate are not
Together；
The method also includes predefining for: first traffic rate and second traffic rate, wherein described first
The predetermined of traffic rate include:
It receives mobile terminal and sends the first request message for carrying traffic rate；
When obtaining indicating to parse correct third response message according to first request message, indicate that the mobile terminal will
Traffic rate in first request message is as the first traffic rate；
When obtaining indicating four response message of parsing mistake according to first request message, the 4th response report is sent
Text instruction mobile terminal reduces the traffic rate, and returns to execution reception mobile terminal transmission and carry the first of traffic rate
Request message, wherein the traffic rate in the first request message received is the traffic rate after reducing；
The predetermined of second traffic rate include:
It sends and carries the second request message of third communication rate to the mobile terminal；
When receiving five response message for being used to indicate parsing mistake of the mobile terminal feedback, reduces described second and ask
The third communication rate for asking message to carry is to receiving the corresponding with second request message of mobile terminal feedback
And for indicating to parse correct 4th response message；
When receiving when parsing correct six response message for expression of the mobile terminal feedback, by the 6th response
The third communication rate carried in corresponding second request message of message is as the second traffic rate.
6. a kind of VOCA voice communications assembly, which is characterized in that described device includes:
Earphone channel interface, the first audio signal sent for receiving mobile terminal with predetermined first traffic rate,
First audio signal is the audio signal of analog signal form；
Audio coding decoding module obtains the second audio of digital signal form for being decoded to first audio signal
Signal；And for encoding to third audio signal, obtain the 4th audio signal of analog signal form, the third sound
Frequency signal is the audio signal that the need determined according to second audio signal are sent to mobile terminal；
Data processing module, for according to second audio signal, determination need to be sent to the third audio of the mobile terminal
Signal, the third audio signal are the audio signal of digital signal form；
Microphone interface, for sending the 4th audio signal to the mobile terminal with predetermined second traffic rate；
First receiving module carries the first request message of traffic rate for receiving mobile terminal transmission；
Parsing module obtains parsing result for parsing to first request message；
First sending module is corresponding with first request message and for indicating parsing mistake for sending parsing result
First response message to indicate that the mobile terminal reduces the traffic rate, and triggers first receiving module and receives shifting
The first request message for carrying the traffic rate after reducing to the parsing result of dynamic terminal transmission is to report with first request
Text is corresponding and for indicating to parse correct second response message.
7. device according to claim 6, which is characterized in that the audio coding decoding module includes audio decoding unit；
The audio decoding unit, for determining the first signal frequency of carrier signal in first audio signal, with described
First signal frequency is that solution code frequency is decoded first audio signal, obtains the second audio letter of digital signal form
Number, first signal frequency is corresponding with first traffic rate.
8. device according to claim 7, which is characterized in that the audio coding decoding module further includes audio coding list
Member；
The audio coding unit, for determining the second signal frequency of carrier signal in the third audio signal, with described
Second signal frequency is that coding frequency encodes the third audio signal, obtains the 4th audio letter of analog signal form
Number, the second signal frequency is corresponding with second traffic rate；And the waveform of the 4th audio signal be standard just
String wave all-wave.
9. device according to claim 8, which is characterized in that the audio coding unit includes: audio coding subelement
Subelement is inserted into signal；
The audio coding subelement, for the second signal frequency be coding frequency, to the third audio signal into
Row coding, obtains the fifth audio signal of analog signal form, and the waveform of the fifth audio signal is standard sine wave all-wave；
The signal is inserted into subelement, for being sequentially inserted into standard sine wave full wave format in fifth audio signal front end
Carrier signal and transition signal, obtain the 4th audio signal, and the transition signal is used to indicate the letter after transition signal
Number decoded audio signal, and the signal of the signal period of the transition signal and the carrier signal are wanted for the mobile terminal
Period is different.
10. device according to claim 6, which is characterized in that described device further include:
Second sending module carries the second request message of traffic rate to the mobile terminal for sending；
Second receiving module, for receiving the corresponding with second request message of the mobile terminal feedback and being used for table
Show the third response message of parsing mistake, it is described to receiving that instruction reduces the traffic rate carried in second request message
Mobile terminal feedback corresponding with second request message and for indicating correct 4th response message of parsing；
Processing module, traffic rate for will be carried in corresponding first request message of second response message as
Predetermined first traffic rate, and for will be carried in corresponding second request message of the 4th response message
Traffic rate as predetermined second traffic rate.
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| CN113689884B (en) * | 2021-09-17 | 2024-01-26 | 中国电子科技集团公司第五十八研究所 | Multichannel voice signal evaluation system and method |
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| CN102355523A (en) * | 2011-07-04 | 2012-02-15 | 上海分点科技有限公司 | Electronic signal processing device, equipment, system and information processing method thereof |
| CN103188389A (en) * | 2011-12-30 | 2013-07-03 | 国民技术股份有限公司 | Data transmission method and data transmission device |
| CN103219753B (en) * | 2012-01-20 | 2016-01-13 | 马勇 | Powered by audio interface external device and the method for communication and intelligent terminal |
| CN103379214B (en) * | 2012-04-26 | 2015-10-28 | 国民技术股份有限公司 | A kind of audio communication system |
| CN102821076B (en) * | 2012-06-29 | 2014-12-24 | 天地融科技股份有限公司 | Audio communication modulation way self-adaptive method, system, device and electronic sign tool |
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| CN104008641B (en) * | 2013-12-09 | 2017-05-03 | 福建联迪商用设备有限公司 | Mobile terminal, card reader, mobile terminal audio communication method and mobile terminal voice communication system |
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