CN106301672B - Promote the audio transmission system and its data processing method of data correctness - Google Patents
Promote the audio transmission system and its data processing method of data correctness Download PDFInfo
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- H—ELECTRICITY
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- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
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Abstract
The present invention provides a kind of audio transmission system and its data processing method for promoting data correctness, sends sound wave by a first device and is received by a second device to be handled immediately；Wherein, after the information read is converted to a numerical data by the first device, the numerical data is arranged as a matrix, and it executes error correction coding algorithm and the continuous data in the matrix is made to be re-coded arrangement, to generate a character sequences data, it will be played out after its modulation again, the sound wave received is carried out solution modulation and obtains the character sequences data by the second device, decoding algorithm is corresponded to execute an error correction to obtain correct information, the correctness for obtaining data is promoted whereby, achieve the purpose that solve the problems, such as that continuity numerical data leads to not correction because of continuous mistake in transmission process.
Description
Technical field
The present invention about a kind of audio transmission system, espespecially a kind of audio transmission system that can promote data correctness and its
Data processing method.
Background technique
Science and technology make rapid progress, information is sent by the 3G or Wi-Fi of mobile device, received transmission technology
Through comparable common, and more there is using sound the technology (such as ultrasonic communication technology) for transmitting information in recent years, such as transmits
URL information can play relevant information as long as user holds mobile phone by TV, or see concert film just
Related introduction can be received, or purchase information, retail shop can also go out some electronic coupons etc., application is quite wide
It is general.It is usually to use mode of frequency regulation for current ultrasonic communication technology, i.e., indicates bit value using the height of frequency
" 0 " or " 1 ", only mode of frequency regulation haves the shortcomings that delivery rate is slower, and when the variation of frequency is too intensive, sound wave is in sky
Transmitting can be influenced by propagation rate unevenness in gas, and caused the sound wave of different frequency while being arrived at means for receiving, be made
The variation of frequency of sound wave can not be recognized correctly, so must less efficient ground certain interval of time conversion frequency again.
For another example have in the prior art a kind of using voice transmission data and the system of control command, please refer to shown in Fig. 8,
It includes a teller machines 91, a radio equipment 92, and user operates and input word string or instruction etc. on the teller machines 91,
And playable sound files are converted to, sound wave is transferred to the radio equipment 92 by air, and the radio equipment 92 receives
Just sound wave is handled after sound wave, to obtain the word string or instruction in sound wave, and according to identification word string or the content of instruction and
Automatically corresponding movement is executed, allows user that can send sound merely with teller machines 91, just can control corresponding receipts
Sound equipment 92 simultaneously obtains required service.The word string how inputted user as teller machines 91 in the prior art turns
It is changed to sound wave to be transmitted, and is received by corresponding radio equipment 92, as shown in Figures 9 and 10, wherein being set respectively by the broadcast
Standby 91, the radio equipment 92 executes following steps: the teller machines 91 receive the word string of user input, and user is inputted
Word string be converted into binary data, and binary data are passed through into a phase offset modulation (Phase Shift
Keying, PSK) by binary data-modulated be a sound files；Sentenced again by the teller machines 91 according to the mode of systemic presupposition
It is disconnected whether to compress the sound files, if so, carrying out destructiveness/Lossless Compression, and compressed archives are played, if it is not, then
Directly the sound files are played；When the radio equipment 92 receives one group of sound audio number, by this group of sound audio number solution modulation, and turn
It is changed to a word string, taken subsequent action is determined further according to the content of the word string.
According to the principle of phase offset modulation tech, mainly use the variation of acoustic phase represent bit value " 0 " or
" 1 ", therefore it is not required to conversion frequency when transmission, interval time when transmitting different bits can be lowered, substantially to improve existing skill
In art must less efficient ground certain interval of time again conversion frequency the problem of, but the design that phase offset modulation tech is initial
Object is based on electromagnetic transmission, and electromagnetic wave propagation speed is the light velocity, therefore is produced after transmitting a distance in air
Raw phase pushing figure is minimum, and reviewing sound wave is propagated with velocity of sound in air, compare with the light velocity, velocity of sound slow about 880,000
Again, the variation of spread speed can be caused because of the difference of Media density when and sound wave transmits in the medium, therefore passed in air
After passing a distance, it will cause the increasing of phase pushing figure, if the radio equipment 92 is directly interpreted, can read a large amount of
Continuous wrong bit, though therefore phase offset modulation tech there is no the problem of conversion frequency, the correctness of its data is but
It reduces.
By the above-mentioned prior art it is found that general Transmission system in design for the correctness of improve data transfer, usually
The communication quality in meeting improve data transfer channel, the probability of transmitting fault information is reduced, but sound wave transmits category in air
In the low unstable routing of signal-to-noise ratio (Signal to Noise Ratio, SNR), and passed by sound wave in currently available technology
Data need to be transmitted again by defeated mode later prior to teller machines 91 with phase offset modulation, and the sound wave transmitted is based on
Physical characteristic will be such that the phase anomaly of audio changes due to the difference of medium or distance, and generate a large amount of successional error bits
Metadata, and can not being modified, causes the radio equipment 92 after receiving sound wave, completely can not interpretation it is correct out
Information and be only capable of selection and the discarding of this data laid equal stress on new transmission；Furthermore it is inclined using phase in order to promote the efficiency of sonic transmissions
When moving modulation tech, sound wave transmits in air and often generates a large amount of successional wrong bit Datas, does not simply fail to obtain correct
Data it is even more impossible to be modified so that system effectiveness is bad.Therefore, for the above-mentioned prior art, need to be proposed really
The necessity of more preferable solution.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, main purpose of the present invention provides a kind of audio biography for promoting data correctness
Defeated system and its data processing method, by one for sending the device and corresponding one of sound for receiving the device of sound
Voice transmission is carried out, by the information to be transmitted after specific mode is rearranged, broken up, to avoid in the process of transmission
In, because the wrong bit after receiving caused by paroxysmal continuous mistake is too concentrated, so that it cannot correction, therefore can promote acquirement
The correctness of hiding data, and solve continuity numerical data and lead to not asking for correction because of continuous mistake in transmission process
Topic.
The technical way that above-mentioned purpose to be reached is taken enables the aforementioned audio transmission system for promoting data correctness
Data processing method is mainly transmitted sound wave from a first device to the second device to match, and is executed by the first device
The following steps:
Receive an information, and converts this information into a numerical data；
The numerical data is arranged as a matrix；
Error correction coding algorithm is executed, so that the continuous data in the matrix is re-coded arrangement to generate one
Character sequences data；
The character sequences data are constituted into bit arrangement data plus a header information, and the bit is arranged into data
It is tuned as one group of sound wave；
This group of sound wave is played for second device reception.
Above-mentioned steps are received with the first device sound wave and by the second device, when the first device receives the information,
And the numerical data is converted this information into, then the numerical data is arranged as the matrix, the mistake is executed via the first device
Accidentally corrigendum coding algorithm, so that the continuous data in the matrix is re-coded arrangement and generates the character sequences data, and
The character sequences data are constituted bit arrangement data plus the header information again by the first device, and the bit is arranged
Data-modulated is one group of sound wave for second device reception；After the second device receives this group of sound wave, need to only it be carried out
Filtering, solution modulation simultaneously obtain bit arrangement data, arrange the header information in data by the bit and pick out the character sequence
Column data, and an error correction is executed to the character sequences data and corresponds to decoding algorithm to obtain correct information, it mentions whereby
The correctness for obtaining hiding data is risen, reaches solution continuity numerical data and leads to not in transmission process because of continuous mistake
The purpose of the problem of correction.
The another technical way that above-mentioned purpose to be reached is taken enables the aforementioned audio transmission system for promoting data correctness
System includes:
One first device a comprising first processor, an audio output unit and an encoder, the first processor point
It is not connect with the audio output unit, the encoder, and passes through the audio output unit for audio output；
One second device matches with the first device, which includes a second processor, audio reception list
Member and a decoder, the second processor connect respectively with the audio receiving unit, the decoder, the audio receiving unit to
Audio is received, and is sent to the second processor, audio processing and solution modulation are executed by the second processor；
Wherein, when first processor one information of reading of the first device, then the information is made to be converted to a numerical data, and
The numerical data is arranged as a matrix, then an error correction is executed by the encoder and encodes algorithm, so that in the matrix
Continuous data is re-coded arrangement to generate a character sequences data, which again adds the character sequences data
Bit arrangement data are tuned as one group of sound wave to constitute bit arrangement data by one header information, by the audio output
Unit plays this group of sound wave and receives for second device.
By above-mentioned construction it is found that the audio transmission system that the present invention promotes data correctness passes through the first of the first device
Treated audio is played one group of sound wave for containing information by its audio output unit by processor, the encoder, and by this
The audio receiving unit of second device receives this group of sound wave, then this group of sound wave is converted into audio and is sent to the second processor,
Subsequent corresponding required audio processing or data identification are executed via the second processor, the decoder；Wherein first dress
The mode for setting processing audio, is that the information is read by first processor, and the information is made to be converted to a numerical data, and by the number
Digital data is arranged in matrix format, then executes error correction coding algorithm by the encoder, so that continuous in the matrix
Data generate the character sequences data by recompiling arrangement, and the first processor is again by the character sequences data plus mark
Bit arrangement data are tuned as one group of sound wave to constitute bit arrangement data by head information, by the audio output unit
This group of sound wave is played to receive for second device, after the audio receiving unit of the second device receives this group of sound wave, by this
Two processors are filtered, solve modulation and obtained bit arrangement data, are arranged the header in data by the bit and are believed
Breath can pick out the character sequences data, and execute an error correction homographic solution to the character sequences data with the decoder
Code algorithm promotes the correctness for obtaining hiding data to obtain correct information whereby, reaches and solves continuity numerical data
The purpose for the problem of leading to not correction because of continuous mistake in transmission process.
Detailed description of the invention
Fig. 1 is a preferred embodiment of the present invention audio transmission system schematic diagram.
Fig. 2 is a preferred embodiment of the present invention the data structure schematic diagram of information coding arrangement.
Fig. 3 is a preferred embodiment of the present invention first device data processing method flow chart.
Fig. 4 is a preferred embodiment of the present invention first device error correction coding algorithm flow chart.
Fig. 5 is a preferred embodiment of the present invention second device data processing method flow chart.
Fig. 6 is a preferred embodiment of the present invention second device solution modulation and information flow path switch figure.
Fig. 7 is a preferred embodiment of the present invention second device error correction and corresponds to decoding algorithm flow chart.
Fig. 8 is audio transmission system block diagram known to one.
Fig. 9 is the broadcasting sound flow chart of teller machines known to one.
Figure 10 is the reception sound flow chart of radio equipment known to one.
Drawing reference numeral
10 first device, 11 first processor
12 audio output unit, 13 encoder
20 second device, 21 second processor
22 audio receiving unit, 23 decoder
91 teller machines, 92 radio equipment
Specific embodiment
The preferred embodiment of the audio transmission system of audible recognition rate is promoted about the present invention, refering to Figure 1, it is led
Will from a first device 10 in a medium (such as air) to a second device 20 transmit one group of sound wave, and the first device 10 with
The second device 20 matches, and wherein the sound wave (sound) is a continuously signal in air, can be described as sound audio number
(Audio Signal, audio) also refers to the signal for the various sound heard by human ear.In the present embodiment, the first device 10,
The second device 20 may respectively be the electronic devices such as a mobile device, an intelligent apparatus or a computer equipment.
The first device 10 includes a first processor 11, an audio output unit 12, an encoder 13 and an input
Unit (not shown), the first processor 11 connect with the audio output unit 12, the encoder 13 and the input unit respectively
Connect, the first processor 11 can built-in or presupposed information, or by the input unit input information, pass through the first device 10
First processor 11 reads an information, and carries out information conversion to the information, so that the information is converted to a numerical data, and in this
A check code is added in numerical data and is arranged as a matrix, then an error correction is executed by the encoder 13 and encodes algorithm,
So that the continuous data in the matrix is re-coded arrangement to generate a character sequences data, which again should
Character sequences data constitute bit arrangement data plus a header information, when the first processor 11 reads bit arrangement
Just it is tuned as one group of sound wave after data, and this group of sound wave is played by the audio output unit 12 and is transmitted in air,
The sound wave output containing information to be received for the second device 20.
The second device 20 includes a second processor 21, an audio receiving unit 22 and a decoder 23, this is at second
Reason device 21 is connect with the audio receiving unit 22, the decoder 23 respectively, and the audio receiving unit 22 is to receive first dress
10 sound played back are set, and received this group of sound wave is sent to the second processor 21, by the second processor 21
Execute audio processing and solution modulation；After the second device 20 receives sound wave of the group containing information, that is, pass through second processor
21 pairs of this group of sound waves are filtered, solve modulation and obtain the aforementioned bit arrangement data containing header information, are arranged according to the bit
Header information in column data executes one to the character sequences data with the decoder 23 to pick out the character sequences data
Error correction corresponds to decoding algorithm, which corresponds to decoding algorithm and encode algorithm phase with aforementioned error correction
Match, therefore can accurately obtain correct information, since sound wave is during transmission vulnerable to various influences, is easy to happen big
The problem of measuring successional error in data and leading to not correction, therefore being executed by the encoder 13 of above-mentioned first device 10 should
Error correction encodes algorithm, so that continuous data is recompiled arrangement and broken up data arrangement in a manner of specific mathematical, avoids
Wrong bit after receiving caused by paroxysmal continuous mistake in transmission process is too concentrated and can not be corrected, then by above-mentioned the
The decoder 23 of two devices 20 executes the error correction to match and corresponds to decoding algorithm, can not only obtain correct information, more
The accuracy and efficiency of system can be increased.
The processing side for the data structure that the first device 10 is arranged in information coding in preferred embodiment to illustrate the invention
Formula please refers to shown in Fig. 2, wherein by the reading of first processor 11 of the first device 10 information, in the present embodiment, the information
The input word string corresponding A SCII code first can be converted into numerical data S when carrying out information conversion for an input word string,
Numerical data S includes one group of binary system bit value, and above-mentioned check code is added in numerical data S and is rotated and is arranged
For matrix S0 (" S0:[0] [1] [2] [3] ... "), recycles the encoder 13 to execute above-mentioned error correction coding to matrix S0 and drill
Matrix format in postrotational matrix S0 is carried out a transposition operation by algorithm, i.e., by the horizontal axis of matrix format and the longitudinal axis into
Row exchange is to constitute a transposed matrix S1 (" S1:[0] [1] [2] [3] ... "), then by matrix S0's and transposed matrix S1
Data carry out the successional arrangement of interleaved code again, to generate a character sequences data S2 (" S0 [0], S1 [0], S0 [1], S1
[1], [2] S0, S1 [2] ... "), the character sequences data S2 is finally added into the header information to constitute a bit number of permutations
It is tuned as one group of sound wave according to S3, and by bit arrangement data, to play to the second device 20.
When the second processor 21 of the second device 20 receives this group of sound wave, and before being filtered, solving modulation and obtain
The bit arrangement data S3 containing header information is stated, the header information in data S3 is arranged according to the bit and reads the character sequences
The content of data S3, and the corresponding error correction is executed with the decoder 23 and corresponds to decoding algorithm, to the word read
Metasequence data S3 content carries out dismantling separation, by the above-mentioned matrix S0 and the transposed matrix in the character sequences data S3 content
S1 is restored to obtain the data of wrong bit value, and is obtained institute using dendrogram method (trellis diagram, hedge figure)
It is possible that path, then take the path of a smallest hamming distance (Hamming distance), that is, obtain just firmly believing for maximum of probability
Cease content.In the present embodiment, which is filtered this group of sound wave, solves modulation and obtain aforementioned with time shape
The character sequences data of step response, wherein the second processor 21 is further turned by a bandpass filter, a fast Flourier
(Fast Fourier Transform, FFT) is changed to be filtered respectively to this group of sound wave, solve modulation.
In conclusion the main application mode of the present invention is that a word string is first converted to binary system bit by first device 10
Binary system bit value is then utilized the technology of forward error corrigendum (Forward Error Correction, FEC) by value
It is encoded, and just carries out modulation after coding, after modulation is completed, then the sound audio number after modulation is transmitted to the
Two devices 20；When second device 20 receives sound audio number, then sound audio number is further subjected to solution modulation, and in solution modulation it
It is decoded again afterwards, the data after decoding then are converted into a word string.When correcting technology by forward error makes sonic transmissions, greatly
The bit Data of amount mistake can be corrected for correctly.It should be noted that forward error corrigendum technology is utilized in data
In add redundancy bit in the specific format, a kind of common name for technology that the data to malfunction in transmission process are corrected,
Wherein more typical person include Reed-Solomon code (Reed-solomon Code), convolution code (Convolutional Code),
Accelerate code (TurboCode) etc..
In addition, due to general communication system design when in order to improve data transfer correctness, need to usually improve data
The probability of transmitting fault information is reduced, still, belongs to letter since sound wave transmits in air by the communication quality of transmission channel
Therefore the unstable routing lower than (Signal to Noise Ratio, SNR) of making an uproar utilizes error correction in this present embodiment
Coding techniques is corrected mistake bit caused by transmission process, and the optimal error correction encodes algorithm and matches
The error correction correspond to decoding algorithm, be respectively a convolution coding (also known as Convolutional Code, convolution
Code) and the decoding of Witter ratio (Viterbi) algorithm.
Further, error correction coding algorithm and the error correction to match correspond to decoding algorithm, more may be used
A respectively trellis coding and a Witter are decoded than algorithm, one accelerates code (TurboCode) coding and a Witter to compare algorithm
Decoding, a Coded by Linear Codes and a Witter are decoded than algorithm.
By the explanation of the preferred embodiment of aforementioned present invention, the audio transmission system for promoting data correctness can be summarized
Data processing method mainly transmits sound wave from the first device 10 to the second device 20 to match, such as Fig. 2, Fig. 3 institute
Show, and the following steps executed by the first device 10:
Receive an information (S31), the information can be a word string in the present embodiment, and convert this information into a numerical data
S (S32), numerical data S include one group of binary system bit value；
The numerical data is arranged as a matrix S0 (S33), a verification can be added in the present embodiment in the numerical data
Code is simultaneously arranged as matrix S0 (S33)；
Error correction coding algorithm (S34) is executed, so that the continuous data in matrix S0 is re-coded arrangement
To generate a character sequences data S2；
The character sequences data S2 is constituted into bit arrangement data S3 plus a header information, and the bit is arranged
Data S3 is tuned as one group of sound wave (S35)；
This group of sound wave is played so that the second device 20 receives, or stores this group of sound wave (S36)；In this present embodiment into
One step compresses this group of sound wave；
Judge whether that next group of sound wave (S37) need to be generated, if so, returning to aforementioned " receiving an information (S31) " step.
Through the above steps, sound is played to the second device 20 with the first device 10, when the first device 10 receives
Numerical data S is converted into after to the information again, and when executing error correction coding algorithm, it is continuous in matrix S0
Data are re-coded arrangement and generate character sequences data S2, in this present embodiment when the above method is executed to " execution one
Error correction encodes algorithm (S34), so that the continuous data in matrix S0 is re-coded arrangement to generate a character sequence
When column data S2 " step, as shown in Figure 2, Figure 4 shows, this method further includes following steps:
The above-mentioned numerical data S containing check code becomes matrix S0 (S341) with fixed-direction rotation；
Matrix S0 is converted, to generate transposed matrix S1 (S342)；
With the data of matrix S0 and transposed matrix S1, carries out successional interleaved code again and be arranged in the character sequence
Column data S2, the character sequences data S2 is one-dimensional array S2 (S343) in this present embodiment；And
Connect execute it is aforementioned " by the character sequences data S2 plus a header information with constitute a bit arrangement data S3,
And bit arrangement data S3 is tuned as one group of sound wave (S35)；" step and " play this group of sound wave for the second device
20 receive, or store this group of sound wave (S36) " step.
The character sequences data S2 is added into the header information to constitute the position in first device 10 in through the above steps
Identical permutation data S3, and bit arrangement data S3 is tuned as one group of sound wave so that the second device receives 20, in this implementation
In example when the first device 10 plays this group of sound wave and the second device 20 is supplied to receive, as shown in figure 5, simultaneously further by this
Second device 20 executes the following steps:
Receive one group of sound wave (S41)；
This group of sound wave is filtered and is converted (S42), in the present embodiment, which further passes through a band
Bandpass filter, a fast Fourier transform (Fast Fourier Transform, FFT) are respectively to filter this group of sound wave
Wave, solution modulation；
Sound characteristic solution after conversion is tuned as a numerical data (S43)；
The header information in data S3 is arranged according to the bit and reads the character sequences data S2 content, and to the character sequence
Column data S2 executes an error correction and corresponds to decoding algorithm, to obtain correct information (S44)；
It converts that information into a word string and is back to proximal end or distal end (S45), judge whether to continue to next group of sound
Wave (S46), if so, returning to aforementioned " receiving one group of sound wave (S41) " step.
Furthermore when above-mentioned steps execute to " according to the bit arrange data S3 in header information read the character sequences
Data S2 content, and an error correction is executed to the character sequences data S2 and corresponds to decoding algorithm, to obtain correct information
(S44) " when step, as shown in fig. 6, and by the second device 20 further execute the following steps:
Read this group of sound wave it is converted after sound characteristic (S441)；
The sound characteristic is subjected to solution modulation (S442), to generate the numerical data；
It is judged whether there is according to the numerical data and reads a wherein header information (S443)；
If so, reading character sequences data S2 content (S444)；
The error correction is executed to character sequences data S2 and corresponds to decoding algorithm, to obtain correct information
(S445)；
Whether correctly (S446) to judge to calculate numerical data S again with a check code；
If so, executing aforementioned " convert that information into a word string and be back to proximal end or distal end (S45) " step；
When execute aforementioned " judged whether there is according to the numerical data and read a wherein header information (S443) " step or
Person is when executing aforementioned " whether correctly (S446) judging to calculate numerical data S again with a check code " step, if judgement knot
Fruit be it is no, then change read this group of sound wave range (S447), and return to " read this group of sound wave it is converted after sound characteristic
(S441) " step.
Further, in this present embodiment when above-mentioned steps are executed to " executing the mistake more to character sequences data S2
When positive corresponding decoding algorithm, to obtain correct information (S445) " step, as shown in Fig. 2, Fig. 7, this method further includes following
Step:
Take out corresponding matrix S0 and transposed matrix S1 (S4451) in the data content of character sequences data S2；
Matrix S0, transposed matrix S1 are subjected to reduction arrangement (S4452)；
The data content of matrix S0 and transposed matrix S1 after sequentially comparing reduction arrangement, to obtain the number of wrong bit value
According to (S4453)；
It is decoded using Witter ratio (Viterbi) algorithm, and obtains correct numerical data S content (S4454)；
It connects and executes aforementioned " whether correctly (S446) judging to calculate numerical data S again with a check code " step.
The present invention encodes algorithm and the corresponding error correction by error correction and corresponds to decoding algorithm, according to taking
The data for obtaining wrong bit value calculate shortest path, to obtain the correct information content of maximum of probability, and based on existing at present
There is the operational capability of general chip for cell phone in technology to be not possible to carry out the operation of too complex, therefore with the skill of forward direction error correction
Art is encoded, then is decoded with corresponding Witter than algorithm, and the bit Data of a large amount of mistakes can when making sonic transmissions
To be corrected, thus really solve in the prior art use phase offset modulation tech when, sound wave air transmit often generate
A large amount of successional wrong bit Datas and the problem of lead to not correction, and more can lifting system obtaining hiding data just
True property and efficiency.
Claims (12)
1. a kind of data processing method for the audio transmission system for promoting data correctness, which is characterized in that the processing method
Sound wave is transmitted from a first device to the second device to match, and the following steps are executed by the first device:
Receive an information, and converts that information to a numerical data；
The numerical data is arranged as a matrix；
Error correction coding algorithm is executed, so that the continuous data in the matrix is re-coded arrangement to generate a word
Metasequence data；
The character sequences data are constituted into bit arrangement data plus a header information, and the bit is arranged into data
It is tuned as one group of sound wave；
Described group of sound wave is played for second device reception.
2. the data processing method of the audio transmission system according to claim 1 for promoting data correctness, feature exist
In being arranged as a matrix step when the step is executed to by the numerical data, further execute the following steps:
A check code is added in the numerical data and is arranged as the matrix.
3. the data processing method of the audio transmission system according to claim 1 for promoting data correctness, feature exist
In the method further includes the following steps:
Described group of sound wave is compressed, and judges whether that next group of sound wave need to be generated, if so, returning to one information of aforementioned receiving
Step.
4. the data processing method of the audio transmission system according to claim 1 for promoting data correctness, feature exist
In the information can be a word string, convert that information to the numerical data, and the numerical data includes one group of binary system
Bit value.
5. the data processing method of the audio transmission system according to claim 1 for promoting data correctness, feature exist
In when the method is executed to error correction coding algorithm is executed, so that the continuous data in the matrix is compiled again
To generate a character sequences data step, the method further includes following steps for code arrangement:
The numerical data becomes the matrix with fixed-direction rotation；
By the matrix conversion to generate a transposed matrix；
With the data of the matrix and the transposed matrix, carry out being staggered to the character sequences data；
Connecting execution is aforementioned to constitute bit arrangement data plus a header information for the character sequences data, and will be described
Bit arrangement data are tuned as one group of sound wave step.
6. the data processing method of the audio transmission system according to claim 5 for promoting data correctness, feature exist
In the data of the matrix and the transposed matrix carry out being staggered to the character sequences data, the character sequences number
According to for one-dimensional array.
7. the data processing side of the audio transmission system according to any one of claim 1 to 6 for promoting data correctness
Method, which is characterized in that when execution plays described group of sound wave to the first device and supplies the second device in the method
Receiving step, and the following steps are further executed by the second device:
Receive described group of sound wave；
Described group of sound wave is converted；
Sound characteristic solution after conversion is tuned as a numerical data；
The character sequences data content is read according to header information, and executes an error correction and corresponds to decoding algorithm, to take
Obtain correct information.
8. the data processing method of the audio transmission system according to claim 7 for promoting data correctness, feature exist
In carrying out switch process when the step is executed to by described group of sound wave, and further include the following steps:
Described group of sound wave is filtered and is converted.
9. the data processing method of the audio transmission system according to claim 7 for promoting data correctness, feature exist
In the method further includes the following steps:
It converts this information into a word string and is back to close/distal end；
Judge whether to continue to next group of sound wave, if so, returning to described group of sound wave step of aforementioned receiving.
10. the data processing method of the audio transmission system according to claim 9 for promoting data correctness, feature exist
In reading the character sequences data content when the step is executed to according to header information, and it is corresponding to execute an error correction
Decoding algorithm to obtain correct information Step, and further executes the following steps:
Read the sound characteristic of described group of sound wave；
The sound characteristic is subjected to solution modulation to generate the numerical data；
It is judged whether there is according to the numerical data and reads a wherein header information；
If so, reading the character sequences data content；
It executes the error correction and corresponds to decoding algorithm, to obtain correct information；
Judge whether the calculating numerical data is correct again；
It converts this information into a word string if so, execution is aforementioned and is back to proximal end or distal end step；
A wherein header information step is read or before executing when executing aforementioned judge whether there is according to the numerical data
State judge to calculate again the numerical data whether correct step when, if judging result be it is no, change described group of sound wave of reading
Range, and return to read described group of sound wave sound characteristic step.
11. the data processing method of the audio transmission system according to claim 10 for promoting data correctness, feature
It is, corresponds to decoding algorithm when the step is executed to executing the error correction, it is described to obtain correct information Step
Method further includes the following steps:
Take out the matrix and transposed matrix in the data content of the character sequences data；
Matrix and transposed matrix content after sequentially comparing reduction arrangement, to obtain wrong bit Data；
It is decoded using a Witter than algorithm to obtain correct digital data content；
Connecting execution is aforementioned to be judged to calculate the whether correct step of numerical data again.
12. a kind of audio transmission system for promoting data correctness, which is characterized in that the Transmission system includes:
One first device a comprising first processor, an audio output unit and an encoder, the first processor difference
It is connect with the audio output unit, the encoder, and by the audio output unit by audio output；
One second device matches with the first device, and the second device includes a second processor, audio reception list
Member and a decoder, the second processor are connect with the audio receiving unit, the decoder respectively, and the audio receives
Unit is sent to the second processor to receive audio, executes audio processing and solution modulation by the second processor；
Wherein, the sound according to any one of claim 1 to 11 for promoting data correctness is executed by the first device
The data processing method of frequency Transmission system；According to any one of claims 7 to 11 mention is executed by the second device
Rise the data processing method of the audio transmission system of data correctness.
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| WO1999062181A1 (en) * | 1998-05-27 | 1999-12-02 | Ntt Mobile Communications Network Inc. | Error protecting method and error protective device |
| US6357029B1 (en) * | 1999-01-27 | 2002-03-12 | Agere Systems Guardian Corp. | Joint multiple program error concealment for digital audio broadcasting and other applications |
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