CN104700837B - The sending, receiving method and device of a kind of audio signal - Google Patents
The sending, receiving method and device of a kind of audio signal Download PDFInfo
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- CN104700837B CN104700837B CN201310659758.1A CN201310659758A CN104700837B CN 104700837 B CN104700837 B CN 104700837B CN 201310659758 A CN201310659758 A CN 201310659758A CN 104700837 B CN104700837 B CN 104700837B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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Abstract
The present invention is suitable for field of communication technology, there is provided the sending, receiving method and device of a kind of audio signal, the described method includes：The voice data for needing to send is divided at least two data packets；Each two data packet is divided into one group；The carrier wave for the different frequency that pre-selection is respectively adopted to each data packet in every group encodes, the symbol sample value after being encoded, and processing, generation superposition sampling point Value Data are overlapped to the symbol sample value；Loudspeaker are controlled to send the superposition sampling point Value Data to receiving terminal.The present invention, since two data packets in every group use the carrier signal of different frequency to be modulated coding, each carrier signal loads different data contents, and two data packets are sent to receiving terminal at the same time in the same time by way of data investigation, the traffic rate of voice data can be lifted.
Description
Technical field
The invention belongs to the sending, receiving method and device of field of communication technology, more particularly to a kind of audio signal.
Background technology
In today of smart mobile phone popularization, the external communication interface of mobile phone, ancillary equipment is also various, and its sound intermediate frequency
The versatility of input/output interface is most strong, and essentially all of mobile phone and tablet computer have loudspeaker and this audio input of microphone
Output interface, therefore audio communication system and application also will be popularized slowly.
But due to being inputted by the audio input output interfaces of the terminal devices such as mobile phone and tablet computer or output
Audio signal（The audio signal that audio signal and loudspeaker including microphone MIC admissions play）Voltage it is smaller, substantially all
It is millivolt level, is easily disturbed, and the sample frequency of the audio signal of most of terminal device is all largely
44.1KHZ, and the number of the sampled point of each signal period cannot very little, this will cause to carry out sound using these terminal devices
When frequency communicates, the baud rate of communication and is easier to be disturbed than relatively low, and if improving the traffic rate of wireless air.
The content of the invention
An embodiment of the present invention provides the sending, receiving method and device of a kind of audio signal, it is intended to solves the prior art
The terminal device of offer, when carrying out voice communication, the baud rate of communication than it is relatively low the problem of.
On the one hand, there is provided a kind of sending method of audio signal, the described method includes：
The voice data for needing to send is divided at least two data packets；
Each two data packet is divided into one group；
The carrier signal for the different frequency that pre-selection is respectively adopted to each data packet in every group encodes, and is encoded
Symbol sample value afterwards, is overlapped the symbol sample value processing, generation superposition sampling point Value Data；
Loudspeaker are controlled to send the superposition sampling point Value Data to receiving terminal.
Further, it is described each two data packet is divided into one group after, further include step：
The value after each two data packet phase exclusive or is calculated, the 3rd data packet using the value as this group.
Further, before the voice data for needing to send is divided at least two data packets, step is further included：
Select low frequency, the carrier signal of three different frequencies of intermediate frequency and high frequency；
The 3rd data packet is encoded using the carrier signal of intermediate frequency.
Further, be respectively adopted in each data packet in every group the carrier signal of the different frequency of pre-selection into
Row coding, the symbol sample value after being encoded, is overlapped the symbol sample value processing, generation superposition sampling point Value Data
Afterwards, further include：
The superposition sampling point Value Data is exported to digital analog converter DAC；
Control DAC by the superposition sample value data conversion into analog signal and export to loudspeaker.
On the other hand, there is provided a kind of dispensing device of audio signal, the dispensing device include：
Data dividing unit, for the voice data for needing to send to be divided at least two data packets；
Data packet grouped element, for each two data packet to be divided into one group；
Data packet coding unit, the carrier wave letter of the different frequency for each data packet in every group being respectively adopted pre-selection
Number encoded, the symbol sample value after being encoded, processing, generation superposition sample value are overlapped to the symbol sample value
Data；
Data sending control unit, for controlling loudspeaker to send the analog signal to receiving terminal.
Further, the dispensing device further includes：
Preliminary data bag generation unit, for calculating the value after each two data packet phase exclusive or, regard the value as this group
The 3rd data packet.
Further, the dispensing device further includes：
Frequency selection unit, for selecting the carrier signal of three low frequency, intermediate frequency and high frequency different frequencies；
The data packet coding unit generates the 3rd packet generation unit using the carrier signal of intermediate frequency
3rd data packet is encoded.
Further, the dispensing device further includes：
Data outputting unit, for exporting the superposition sampling point Value Data to digital analog converter DAC；
Date Conversion Unit, for controlling DAC by the superposition sample value data conversion into analog signal and exporting to loudspeaker
.
Another further aspect, there is provided a kind of method of reseptance of audio signal, the described method includes：
Start the recording that recording module carries out audio signal, generate recording file；
The frequency values of the carrier signal selected according to transmitting terminal, start the decoding thread of the carrier signal of different frequency, by
The decoding thread decodes the audio file.
Further, believe in the frequency values of the carrier signal selected according to transmitting terminal, the carrier wave for starting different frequency
Number decoding thread, after being decoded by the thread to the audio file, further include：
Verify whether decoded result is correct；
If packet error or loss in intercarrier signal, are parsed low by high and low frequency carrier signal
Data packet on frequency and high-frequency carrier signal；
If the high frequency either packet error or loss on low frequency carrier signal, different with the data packet in carrier signal
Or the data packet in remaining road carrier signal obtains the data packet in an other road carrier signal.
Another aspect, there is provided a kind of reception device of audio signal, described device include：
Recording file generation unit, the recording of audio signal is carried out for starting recording module, generates recording file；
Decoding unit, for the frequency values of the carrier signal selected according to transmitting terminal, starts the carrier signal of different frequency
Decoding thread, by it is described decoding thread the audio file is decoded.
Further, the reception device further includes：
Authentication unit, for verifying whether decoded result is correct；
First resolution unit, if packet error or loss in intercarrier signal, by high frequency and low
Frequency carrier signal parses the data packet on low frequency and high-frequency carrier signal；
Second resolution unit, if for the high frequency either packet error or loss on low frequency carrier signal, with load
The data packet in data packet exclusive or remaining road carrier signal on ripple signal obtains the data packet in an other road carrier signal.
In the embodiment of the present invention, since two data packets in every group using the carrier signal of different frequency are modulated volume
Code, each carrier signal loads different data contents, and two data packets in every group are existed by way of data investigation
The same time is sent to receiving terminal at the same time, can lift the traffic rate of voice data.Such as with every group two in the present embodiment
Exemplified by a data packet, in the case where communication link symbol rate is identical, complete voice data transmission and data re-transmitting once
The required time is the half of traditional approach, and traffic rate is twice of efficiency of traditional approach.
Brief description of the drawings
Fig. 1 is that the embodiment of the present invention one provides the sending method of audio signal and realizes flow chart；
Fig. 2 is that the embodiment of the present invention two provides the sending method of audio signal and realizes flow chart；
Fig. 3 is the beneficial effect schematic diagram for the sending method that the embodiment of the present invention two provides audio signal；
Fig. 4 is that the embodiment of the present invention three provides the method for reseptance of audio signal and realizes flow chart；
Fig. 5 is the structure diagram of the dispensing device for the audio signal that the embodiment of the present invention four provides；
Fig. 6 is the structure diagram of the dispensing device for the audio signal that the embodiment of the present invention five provides；
Fig. 7 is the structure diagram of the reception device for the audio signal that the embodiment of the present invention six provides.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In embodiments of the present invention, the voice data that sends will be first needed to be divided into multiple data packets, then by each two number
One group is divided into according to bag, and the carrier wave for the different frequency that pre-selection then is respectively adopted to each data packet in every group encodes, and obtains
Symbol sample value after to coding, is overlapped the symbol sample value processing, generation superposition sampling point Value Data, controls loudspeaker
By the superposition sample value data sending to receiving terminal.
It is described in detail below in conjunction with realization of the specific embodiment to the present invention：
Embodiment one
Fig. 1 shows that the method for the transmission audio signal that the embodiment of the present invention one provides realizes flow, by taking transmission as an example
To illustrate, details are as follows：
In step S101, it would be desirable to which the voice data of transmission is divided at least two data packets.
In the present embodiment, subpackage processing is carried out with predetermined length to the voice data that needs are sent, be divided at least
Two data packets.For example, it is desired to which the length of the voice data sent is 16bit, predetermined length is 4bit, then will can need
The voice data of transmission is divided into the data packet of 4 4bit.
In step s 102, each two data packet is divided into one group.
In the present embodiment, divide each two data packet into a group, all data packets are divided into several groups, if
The number for the data packet that step S201 is divided is odd number, then last data packet is combined with the data packet of a full 0, two
Person forms a group.
Wherein, one group is divided into two data packets in the present embodiment, it is of course also possible to which other number data packets are drawn
It is divided into one group, is not limited herein, when the number for being data packet in each group is two, it is only necessary to two road carrier signals, and
When the number of data packet increases in each group, it is necessary to carrier wave number it is more.
Wherein, the working frequency points of each road carrier signal are different, but modulation system is identical, is transmitted in each road carrier signal
Data content it is different, but per road carrier signal on the data transmitted there are relevance in terms of content.Such as in the present embodiment,
It is first data packet in every group that first road carrier signal, which uploads defeated data, and the data transmitted in the second road carrier signal are
Second data packet in every group；Certainly, it is second data packet in every group that the first road carrier signal, which uploads defeated data, the
The data transmitted in two road carrier signals are first data packets in every group, are not limited herein.
In step s 103, the carrier signal that the different frequency of pre-selection each data packet in every group is respectively adopted carries out
Coding, the symbol sample value after being encoded, is overlapped the symbol sample value processing, generation superposition sampling point Value Data.
In the present embodiment, the carrier signal of two frequencies can be pre-selected, as two road carrier signals, this is two road-load
The frequency of ripple signal is respectively low frequency 5K and high frequency 12K, during selection, avoids 2 subharmonic and 3 subharmonic of low frequency as far as possible.Then
Coding is modulated to two data packets in each group respectively using low frequency 5K and high frequency 12K, two data packets is calculated and compiles
Symbol sample value after code, then these sample values are overlapped with processing, generation superposition sampling point Value Data.
Specifically, in the present embodiment, superposition sampling point Value Data is exported to digital analog converter（Digital to
Analog converter, DAC）, then control DAC by the superposition sample value data conversion into analog signal and export to loudspeaker
, the analog signal is finally sent to receiving terminal by loudspeaker.
In step S104, control loudspeaker send the superposition sampling point Value Data to receiving terminal.
The present embodiment, is first divided into multiple data packets by the voice data for needing to send, then each two data packet is divided into
One group, the carrier wave for the different frequency that pre-selection then is respectively adopted to each data packet in every group encodes, after obtaining coding
Symbol sample value, the symbol sample value is overlapped, generation superposition sampling point Value Data, and will superposition sampling point Value Data it is defeated
Go out to loudspeaker, finally by loudspeaker by the superposition sample value data sending to receiving terminal.Since two data packets in every group are adopted
Coding is modulated with the carrier signal of different frequency, each carrier signal loads different data contents, and passes through stacked data
Two data packets are sent to receiving terminal by the mode added at the same time in the same time, can lift the traffic rate of voice data.Than
Such as, by taking every group of two data packets in the present embodiment as an example, in the case where communication link symbol rate is identical, voice data is completed
Transmission and data re-transmitting once the required time be traditional approach half, traffic rate is twice of traditional approach
Efficiency.
Can one of ordinary skill in the art will appreciate that realizing that all or part of step in the various embodiments described above method is
To instruct relevant hardware to complete by program, corresponding program can be stored in a computer read/write memory medium
In, the storage medium, such as ROM/RAM, disk or CD.
Embodiment two
Fig. 2 shows that the method for transmission audio signal provided by Embodiment 2 of the present invention realizes flow, using transmitting terminal as
Example illustrates, and details are as follows：
In step s 201, it would be desirable to which the voice data of transmission is divided at least two data packets.
In step S202, each two data packet is divided into one group.
In step S203, the value after every two data packets phase exclusive or is calculated, the 3rd data using the value as this group
Bag.
In embodiments of the present invention, two data packets in each group are calculated and carry out the value after exclusive or processing, by this
It is worth the 3rd data packet as this group.
In step S204, the carrier signal for each data packet in every group being respectively adopted the different frequency of pre-selection carries out
Coding, the symbol sample value after being encoded, is overlapped the symbol sample value processing, generation superposition sampling point Value Data.
In embodiments of the present invention, on the basis of one step S103 of embodiment, then a frequency is selected, which is made
To be modulated the frequency of the carrier signal of coding to the 3rd data packet in each group.
In the present embodiment, which is intermediate frequency 8K.Therefore, intermediate frequency 8K can be respectively adopted in each group
The 3rd data packet be modulated coding.
Certainly, the 3rd data packet can not also be placed on intermediate frequency, but according in practical applications, to mobile terminal
During frequency response analysis, response of the mobile terminal to intermediate frequency is preferable, so the first data packet and the second data packet are carried out exclusive or
The 3rd data packet obtained afterwards, which is put on intermediate frequency, carries out modulating-coding, preferably can carry out exclusive or with other two paths of data bags and go out knot
Fruit.
In this step, the carrier signal for 3 different frequencies that pre-selection is respectively adopted to 3 data packets in every group is compiled
Code, the symbol sample value after being encoded, then these symbol sample values are overlapped with processing, generation superposition sampling point Value Data,
Finally and by generation superposition sampling point Value Data export to digital analog converter DAC, turned the superposition sampling point Value Data by DAC
Change analog signal into and export to loudspeaker, finally send the analog signal to receiving terminal by loudspeaker.Wherein, this 3 road-load ripple letter
Number frequency be respectively low frequency 5K, intermediate frequency 8K and high frequency 12K.
In step S205, control loudspeaker send the superposition sampling point Value Data to receiving terminal.
The present embodiment, since two data packets in every group use the carrier signal of different frequency to be modulated coding, often
A carrier signal loads different data contents, and is sent out two data packets at the same time in the same time by way of data investigation
Receiving terminal is given, the traffic rate of voice data can be lifted.In addition, all including the 3rd data packet in each group, this
Three data packets are the values that two data packets in every group obtained after exclusive or processing, and receiving terminal is receiving transmitting terminal transmission
Audio signal after, even if there is data packet that packet loss occurs in each group, remaining two road carrier signal can also be closed by algorithm
It is normally to parse the data content included by the data packet of the packet loss, improves the communication success rate of system.
Fig. 3 can simply note the effect that can reach by this mode of embodiment two, be described as follows：
The voice data that definition needs to send is D, and traditional approach carries out the transmission of audio signal using carrier way, if
The frequency of the carrier wave is f0, and the carrier signal of 3 kinds of different frequencies is used in the present embodiment, therefore is properly termed as multi-carrier mode,
The frequency for the carrier signal that multi-carrier mode uses is respectively f0, f1, f2, data re-transmitting 1 time, as can be seen from Figure 3：
（1）, when transmitting voice data using traditional carrier way, it is T2 to complete the time that a data D is sent, with
And data are completed, retransmitting 1 time needs time T3；
（2）, using multi-carrier mode transmit voice data when, it would be desirable to the data of transmission are divided into data packet d0, d1, its
The data content that middle carrier wave f0 is sent is d0, d1；The data content that carrier wave f1 is sent is d0XORd1；The data that carrier wave f2 is sent
Content is d1, d0；From the figure 3, it may be seen that under multi-carrier mode, it is T1 to complete the time that a voice data is sent, and completes data
It is T2 to retransmit 1 time to need the time.
Therefore, in the case where communication link symbol rate is identical, multi-carrier mode completes transmission and the data weight of data D
Send out once the half that the required time is traditional approach so that the traffic rate that data are applied under multi-carrier mode is biography
Twice of efficiency of system mode.
Embodiment three
Fig. 4 shows that the method for reseptance for the audio signal that the embodiment of the present invention three provides realizes flow, using receiving terminal as
Example illustrates, and details are as follows：
In step S401, start the recording that recording module carries out audio signal, generate recording file.
In the embodiment of the present invention, receiving terminal first carries out system initialization, starts the recording that recording module carries out audio signal,
Generate recording file.
In step S402, the frequency values of the carrier signal selected according to transmitting terminal, start the carrier signal of different frequency
Decoding thread, by it is described decoding thread the audio file is decoded.
In the embodiment of the present invention, the frequency values for the carrier signal that receiving terminal can be selected according to transmitting terminal, start different frequencies
The decoding thread of the carrier signal of rate, decodes audio file by decoding thread accordingly.
Wherein, if the frequency of carrier signal of transmitting terminal selection is low frequency 5K and high frequency 12K, then it represents that audio file is
The voice data encoded by low frequency 5K and high frequency 12K, receiving terminal start the corresponding decoding threads of low frequency 5K and high frequency 12K,
The low frequency 5K and high frequency 12K voice datas encoded are decoded respectively by two threads, obtain each of transmitting terminal transmission
The first data packet and the second data packet in group.
If the frequency of the carrier signal of transmitting terminal selection is low frequency 5K, intermediate frequency 8K and high frequency 12K, then it represents that audio file
It is the voice data encoded by low frequency 5K, intermediate frequency 8K and high frequency 12K, receiving terminal starts low frequency 5K, intermediate frequency 8K and high frequency 12K difference
Corresponding decoding thread, respectively decodes the voice data of low frequency 5K, intermediate frequency 8K, high frequency 12K codings by two threads,
Obtain the first data packet, the 3rd data packet and the second data packet in each group of transmitting terminal transmission.
Wherein, as a preferred embodiment of the present invention, after step S402, can also comprise the following steps：
In step S403, whether verification decoded result is correct, if correctly, performing step S404；Otherwise, if in
Packet error or loss in frequency carrier signal, then perform step S405；If on high frequency or low frequency carrier signal
Packet error or loss, then perform step S406.
In step s 404, decoded result is directly exported.
In step S405, the data packet on low frequency and high-frequency carrier signal is parsed by high and low frequency carrier signal.
In step S406, obtained separately with the data packet in the data packet exclusive or in carrier signal remaining road carrier signal
Data packet in an outer road carrier signal.
Example IV
Fig. 5 shows the concrete structure block diagram of the dispensing device for the audio signal that the embodiment of the present invention four provides, in order to just
In explanation, illustrate only and the relevant part of the embodiment of the present invention.The dispensing device 5 of the audio signal includes：Data division is single
Member 51, data packet grouped element 52, data packet coding unit 53, digital analog converter 54 and loudspeaker 55.
Wherein, data dividing unit 51, for the voice data for needing to send to be divided at least two data packets；
Data packet grouped element 52, for each two data packet to be divided into one group；
Data packet coding unit 53, the carrier wave of the different frequency for each data packet in every group being respectively adopted pre-selection
Encoded, the symbol sample value after being encoded, processing, generation superposition sample value number are overlapped to the symbol sample value
According to；
Data sending control unit 54, for controlling loudspeaker to send the superposition sampling point Value Data to receiving terminal.
Further, the dispensing device 5 further includes：
Data outputting unit, for exporting the superposition sampling point Value Data to digital analog converter DAC；
Date Conversion Unit, for controlling DAC by the superposition sample value data conversion into analog signal and exporting to loudspeaker
.
The dispensing device of audio signal provided in an embodiment of the present invention can be applied in foregoing corresponding embodiment of the method one
In, details are referring to the description of above-described embodiment one, and details are not described herein.
Embodiment five
Fig. 6 shows the concrete structure block diagram of the dispensing device for the audio signal that the embodiment of the present invention five provides, in order to just
In explanation, illustrate only and the relevant part of the embodiment of the present invention.The dispensing device 6 of the audio signal is included in example IV
Data dividing unit 51, data packet grouped element 52, data packet coding unit 53 and data sending control unit 54, further include standby
With packet generation unit 61.
Wherein, preliminary data bag generation unit 61, for calculate data packet grouped element 52 division each group in
Value after each two data packet phase exclusive or, the 3rd data packet using the value as this group.
Further, the dispensing device further includes：
Frequency selection unit, for selecting the carrier signal of three low frequency, intermediate frequency and high frequency different frequencies；
The data packet coding unit 53 generates the preliminary data bag generation unit 61 using the carrier signal of intermediate frequency
The 3rd data packet encoded.
The dispensing device of audio signal provided in an embodiment of the present invention can be applied in foregoing corresponding embodiment of the method two
In, details are referring to the description of above-described embodiment two, and details are not described herein.
Embodiment six
Fig. 7 shows the concrete structure block diagram of the reception device for the audio signal that the embodiment of the present invention six provides, in order to just
In explanation, illustrate only and the relevant part of the embodiment of the present invention.The reception device 7 of the audio signal is generated including recording file
Unit 71 and decoding unit 72.
Wherein, recording file generation unit 71, the recording of audio signal, generation recording text are carried out for starting recording module
Part；
Decoding unit 72, for the frequency values of the carrier signal selected according to transmitting terminal, the carrier wave for starting different frequency is believed
Number decoding thread, by it is described decoding thread the audio file is decoded.
Further, further included as a preferred embodiment of the present invention, described device 7：
Authentication unit, for verifying whether decoded result is correct；
First resolution unit, if packet error or loss in intercarrier signal, by high frequency and low
Frequency carrier signal parses the data packet on low frequency and high-frequency carrier signal；
Second resolution unit, if for the high frequency either packet error or loss on low frequency carrier signal, with load
The data packet in data packet exclusive or remaining road carrier signal on ripple signal obtains the data packet in an other road carrier signal.
The reception device of audio signal provided in an embodiment of the present invention can be applied in foregoing corresponding embodiment of the method three
In, details are referring to the description of above-described embodiment three, and details are not described herein.
It is worth noting that, in said system embodiment, included unit is simply drawn according to function logic
Point, but above-mentioned division is not limited to, as long as corresponding function can be realized；In addition, each functional unit is specific
Title is also only to facilitate mutually distinguish, the protection domain being not intended to limit the invention.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (8)
- A kind of 1. sending method of audio signal, it is characterised in that the described method includes：The voice data for needing to send is divided at least two data packets；Each two data packet is divided into one group；The value after each two data packet phase exclusive or is calculated, the 3rd data packet using the value as this group；The carrier signal for the different frequency that pre-selection is respectively adopted to each data packet in every group encodes, after being encoded Symbol sample value, is overlapped the symbol sample value processing, generation superposition sampling point Value Data；Loudspeaker are controlled to send the superposition sampling point Value Data to receiving terminal.
- 2. the method as described in claim 1, it is characterised in that the voice data for needing to send is being divided at least two numbers Before bag, step is further included：Select low frequency, the carrier signal of three different frequencies of intermediate frequency and high frequency；The 3rd data packet is encoded using the carrier signal of intermediate frequency.
- 3. the method as described in claim 1, it is characterised in that pre-selection is respectively adopted in each data packet in every group The carrier signal of different frequency encoded, the symbol sample value after being encoded, is overlapped the symbol sample value Processing, generation are superimposed after sampling point Value Data, further include：The superposition sampling point Value Data is exported to digital analog converter DAC；Control DAC by the superposition sample value data conversion into analog signal and export to loudspeaker.
- 4. a kind of dispensing device of audio signal, it is characterised in that the dispensing device includes：Data dividing unit, for the voice data for needing to send to be divided at least two data packets；Data packet grouped element, for each two data packet to be divided into one group；Preliminary data bag generation unit, for calculating the value after each two data packet phase exclusive or, using the value as this group Three data packets；Data packet coding unit, for each data packet in every group is respectively adopted pre-selection different frequency carrier signal into Row coding, the symbol sample value after being encoded, is overlapped the symbol sample value processing, generation superposition sample value number According to；Data sending control unit, for controlling loudspeaker to send analog signal to receiving terminal.
- 5. dispensing device as claimed in claim 4, it is characterised in that the dispensing device further includes：Frequency selection unit, for selecting the carrier signal of three low frequency, intermediate frequency and high frequency different frequencies；The data packet coding unit uses the 3rd that the carrier signal of intermediate frequency generates the 3rd packet generation unit A data packet is encoded.
- 6. dispensing device as claimed in claim 4, it is characterised in that the dispensing device further includes：Data outputting unit, for exporting the superposition sampling point Value Data to digital analog converter DAC；Date Conversion Unit, for controlling DAC by the superposition sample value data conversion into analog signal and exporting to loudspeaker.
- A kind of 7. method of reseptance of audio signal, it is characterised in that the described method includes：Start the recording that recording module carries out audio signal, generate recording file；The frequency values of the carrier signal selected according to transmitting terminal, start the decoding thread of the carrier signal of different frequency, by described Decoding thread decodes the recording file；Verify whether decoded result is correct；If packet error or loss in intercarrier signal, by high and low frequency carrier signal parse low frequency and Data packet on high-frequency carrier signal；If the high frequency either packet error or loss on low frequency carrier signal, with the data packet exclusive or in carrier signal its The data packet in a road carrier signal of remaininging obtains the data packet in an other road carrier signal.
- 8. a kind of reception device of audio signal, it is characterised in that described device includes：Recording file generation unit, the recording of audio signal is carried out for starting recording module, generates recording file；Decoding unit, for the frequency values of the carrier signal selected according to transmitting terminal, starts the solution of the carrier signal of different frequency Code line journey, decodes the recording file by the decoding thread；Authentication unit, for verifying whether decoded result is correct；First resolution unit, if packet error or loss in intercarrier signal, are carried by high and low frequency Ripple signal resolution goes out the data packet on low frequency and high-frequency carrier signal；Second resolution unit, if for the high frequency either packet error or loss on low frequency carrier signal, is believed with carrier wave The data packet in data packet exclusive or remaining road carrier signal on number obtains the data packet in an other road carrier signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659758.1A CN104700837B (en) | 2013-12-09 | 2013-12-09 | The sending, receiving method and device of a kind of audio signal |
| PCT/CN2014/092091 WO2015085859A1 (en) | 2013-12-09 | 2014-11-24 | Audio signal sending and receiving method and apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659758.1A CN104700837B (en) | 2013-12-09 | 2013-12-09 | The sending, receiving method and device of a kind of audio signal |
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| CN104700837B true CN104700837B (en) | 2018-04-24 |
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|---|---|---|---|---|
| CN105790854B (en) * | 2016-03-01 | 2018-11-20 | 济南中维世纪科技有限公司 | A kind of short range data transmission method and device based on sound wave |
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| WO2015085859A1 (en) | 2015-06-18 |
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