CN103219009A - Audio frequency data processing device and method thereof - Google Patents
Audio frequency data processing device and method thereof Download PDFInfo
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- CN103219009A CN103219009A CN2012100226776A CN201210022677A CN103219009A CN 103219009 A CN103219009 A CN 103219009A CN 2012100226776 A CN2012100226776 A CN 2012100226776A CN 201210022677 A CN201210022677 A CN 201210022677A CN 103219009 A CN103219009 A CN 103219009A
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Abstract
The invention discloses an audio frequency data processing device and a method of the audio frequency data processing device. The audio frequency data processing device comprises a processing unit and an audio frequency decoder. The processing unit is used for receiving audio frequency data flow, wherein the audio frequency data flow comprises a first file header which accords with a communication protocol, and audio frequency data encoded in an audio compression format. The processing unit analyzes the audio frequency data flow so as to separate the first file header and the audio frequency data. Information of at least one file is acquired according to the first file header. A second file header is generated according to the information of the file, wherein the second file header meets the international audio video encoding standard. The audio frequency decoder is coupled with the processing unit, receives the second file header and the audio frequency data from the processing unit, and uncompresses the audio frequency data according to the second file header.
Description
Technical field
The invention relates to a kind of Data Handling Equipment And Method, and particularly relevant for a kind of audio-frequency data processing device and method thereof.
Background technology
Along with development of science and technology, people also improve gradually to multimedia quality requirements.(Digital Audio Broadcasting DAB) is so produces digital version technical standard at sound broadcast system thereupon for digital audio broadcasting.For example simulate FM broadcasting compared to traditional analog broadcasting load mode, digital audio broadcasting has the acoustic fidelity height, advantages such as stronger noise and interference resistivity is arranged, and can hold more broadcasting channel in single frequency band.The new standard that improvement version more arranged in recent years is for example DAB+ (Digital Audio Broadcasting plus), solved the part problem in the standard formerly, and the employing that is subjected to various countries gradually.
In the standard of DAB+, high-effect advance rank audio coding (High Efficiency Advanced Audio Coding, coded system encoding compression audio data content HE-AAC), and can promote the tonequality of receiving quality audio data broadcasting content have been adopted.In fact, generally possesses into rank audio coding (Advanced Audio Coding, AAC) audio decoder of decoding capability is under the situation that obtains enough data parameters, all has ability, included audio decoder in for example general Digital Television wafer or the digital audio-frequency player to the HE-AAC decoding.Yet (Audio Super Frame, form ASF) transmits the voice data that will utilize HE-AAC to encode in the standard of DAB+, and the required data parameters of will decoding is deposited in the header of audio frequency superframe with the audio frequency superframe.Thus, even the audio decoder that possesses the AAC decoding capability also can't the direct decoding voice data and plays.
Summary of the invention
The invention provides a kind of audio-frequency data processing device and method thereof, make that audio decoder can be from obtaining the required fileinfo of decoding to decode the shelves head of identification.
The invention provides a kind of audio-frequency data processing device, comprise a processing unit and an audio decoder.Processing unit receives audio data stream, and wherein audio data stream comprises first file header that meets a communications protocol, and with the voice data of audio compression form coding.Processing unit is resolved audio data stream to separate first file header and voice data, produce at least one fileinfo according to first file header, and obtain second file header according at least one fileinfo, wherein second file header meets an international audio-visual coding standard.Audio decoder couples processing unit, receives second file header and voice data from processing unit, and according to the second file header decompression audio data stream.
The invention provides a kind of voice data disposal route, may further comprise the steps.At first, receive audio data stream, wherein audio data stream comprises first file header that meets a communications protocol, and with the voice data of audio compression form coding.Then, resolve audio data stream separating first file header and voice data, and obtain at least one fileinfo according to first file header.Then, produce second file header according at least one fileinfo, wherein second file header meets an international audio-visual coding standard.Moreover, according to the second file header decompression audio data stream.
Based on above-mentioned, the invention provides a kind of audio-frequency data processing device and method thereof, can from the file shelves head that meets a communications protocol, obtain the required data message of decoding, again these fileinfos are made as the cognizable form of audio decoder, make audio decoder to decode and play according to these fileinfos.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended graphic being described in detail below.
Description of drawings
Fig. 1 is the device calcspar according to the audio-frequency data processing device shown in one embodiment of the invention.
Fig. 2 is the flow chart of steps according to the voice data disposal route shown in one embodiment of the invention.
Wherein, description of reference numerals is as follows:
10: audio-frequency data processing device
110: processing unit
120: audio decoder
AS: audio data stream
FH2: file header
AD: voice data
DAS: voice data has decompressed
S101～S104: step
Embodiment
Fig. 1 is the device calcspar according to the audio-frequency data processing device shown in one embodiment of the invention.Please refer to Fig. 1, audio-frequency data processing device 10 comprises processing unit 110 and audio decoder 120.Processing unit 110 receives audio data stream AS.In the present embodiment, audio data stream AS meets the form of DAB+ standard, comprises that wherein audio data content then is the form encoding compression with HE-AAC with the header and the audio data content of the encapsulation of ASF form.What deserves to be mentioned is, only be detailed description content of the present invention at this, but the present invention is not limited to above-mentioned communications protocol and coded format.
Processing unit 110 is resolved audio data stream AS to separate first file header and voice data AD.Processing unit 110 just produces at least one fileinfo according to first file header, wherein at least one fileinfo comprise decoding HE-AAC form voice data institute can not or scarce fileinfo, for example about the parameter of stored audio data and transmitting audio data etc.Processing unit 110 also obtains the second file header FH2 according at least one fileinfo.
The second file header FH2 is the file header that meets international audio-visual coding standard, for example corresponding to the voice data AD that encodes and form in the mode of HE-AAC, the second file header FH2 meets dynamic image expert group second edition standard (Moving Picture Experts Group-2, MPEG-2) or the 4th edition standard of dynamic image expert group (Moving Picture Experts Group-4, MPEG-4).The required data of decoding then deposit second a file shelves FH2 in the mode of the audio-visual coding standard in the above-mentioned world of correspondence.For example, decode required transmission data and storage data, then respectively with audio data transport stream (Audio Data Transport Stream, ADTS) (Audio Data Interchange Format ADIF) is stored among the second file header FH2 for form and Audio Data Interchange Format.
What deserves to be mentioned is, because the HE-AAC form is defined in the MPEG-4 standard, though being made into the form that meets Moving Picture Experts Group-2, the processed unit 110 of the second file header FH2 also can utilize the audio decoder with AAC decoding capability (for example audio decoder 120) of rear end successfully to decode, but in the present embodiment, utilizing processing unit 110 that the second file header FH2 is made into the form that meets the MPEG-4 standard is a preferred implementation.Yet the present invention is not limited to above-mentioned embodiment, focuses on, and the file header form that rear end (for example audio decoder 120) can identification is provided.
Please continue with reference to Fig. 1, audio decoder 120 couples processing unit 110, receive the second file header FH2 and voice data AD from processing unit 110, and then according to the second file header FH2 decompression voice data AS voice data DAS that decompressed, and the voice data DAS that further decompresses plays.
In the present embodiment, audio decoder 120 has the ability of the voice data that decoding forms with AAC form coding.Wherein because the HE-AAC coded format has compatible ability downwards, the audio decoder 120 that possesses decoding AAC format audio data also decodable code by the coded voice data that forms of HE-AAC form (for example voice data AD).Because audio decoder 120 has the ability of decoding AAC format audio data, also possesses the ability that identification meets the form of Moving Picture Experts Group-2 or MPEG-4 standard.Therefore, audio decoder 120 is when decoding audio data AD, can from the second file header FH2, obtain the required information of decoding, for example with the transmission data of ADTS form storage and the storage data that stores with the ADIF form, and according to these information decoding voice datas AD voice data DAS that decompressed, and then play.
Fig. 2 is the flow chart of steps according to the voice data disposal route shown in one embodiment of the invention.Please refer to Fig. 2, at first when step S101, receive audio data stream, wherein audio data stream comprises first file header that meets a communications protocol, and with the voice data of audio compression form coding.Then when step S102, resolve audio data stream separating first file header and voice data, and obtain at least one fileinfo according to first file header.Then when step S103, produce second file header according at least one fileinfo, wherein second file header meets an international audio-visual coding standard.Moreover when step S104, according to the second file header decompression audio data stream.Detailed embodiment can not given unnecessary details at this with reference to the explanation of the embodiment of above-mentioned Fig. 1 in the method.
In sum, the invention provides a kind of audio-frequency data processing device and method thereof, when audio decoder possesses the decoding capability of audio data coding form (for example AAC form or HE-AAC form), can be by processing unit in advance in beyond all recognition form, for example obtain the required information of coding in the header of the audio data stream of the ASF form in the DAB+ standard, be converted to the identifiable form of audio decoder, the header format that for example meets MPEG-2 or MPEG-4 standard, allow audio decoder obtain the required information of coding, and then decode smoothly by identifiable header format.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when doing a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (12)
1. audio-frequency data processing device comprises:
One processing unit, receive an audio data stream, wherein this audio data stream comprises one first file header that meets a communications protocol, and with a voice data of audio compression form coding, this processing unit is resolved this audio data stream to separate this first file header and this voice data, produce at least one fileinfo according to this first file header, and obtain one second file header according at least one fileinfo, wherein this second file header meets an international audio-visual coding standard; And
One audio decoder couples this processing unit, receives this second file header and this voice data from this processing unit, according to this second file header this voice data that decompresses.
2. audio-frequency data processing device according to claim 1, wherein this communications protocol is digital audio broadcasting or advances the sound radio of exponent number word.
3. audio-frequency data processing device according to claim 1, wherein this communications protocol is for advancing the sound radio of exponent number word, and this audio compression form is the high-effect rank audio coding that advances.
4. as audio-frequency data processing device as described in the claim 2, wherein this first file header is the file header form that meets digital audio broadcasting or advance the audio frequency superframe in the exponent number word sound radio agreement.
5. as audio-frequency data processing device as described in the claim 2, wherein:
The audio-visual coding standard in this world is the 4th edition standard of dynamic image expert group; And
At least one fileinfo comprises transmission data that meet the audio data transport stream header format and a storage data that meets Audio Data Interchange Format.
6. as audio-frequency data processing device as described in the claim 5, wherein:
This second file header meets the into header format of rank audio coding audio compression form.
7. voice data disposal route comprises:
Receive an audio data stream, wherein this audio data stream comprises one first file header that meets a communications protocol, and with a voice data of audio compression form coding;
Resolve this audio data stream separating this first file header and this voice data, and obtain at least one fileinfo according to this first file header;
Produce one second file header according at least one fileinfo, wherein this second file header meets an international audio-visual coding standard;
According to this second file header this voice data that decompresses.
8. as voice data disposal route as described in the claim 7, wherein, in the described method, this communications protocol is digital audio broadcasting or advances the sound radio of exponent number word.
9. as voice data disposal route as described in the claim 7, wherein this communications protocol is for advancing the sound radio of exponent number word, and this audio compression form is the high-effect rank audio coding that advances.
10. as voice data disposal route as described in the claim 9, wherein this first file header is the file header form that meets digital audio broadcasting or advance the audio frequency superframe in the exponent number word sound radio agreement.
11. as voice data disposal route as described in the claim 8, wherein:
The audio-visual coding standard in this world is the 4th edition standard of dynamic image expert group; And
At least one fileinfo comprises transmission data that meet the audio data transport stream header format and a storage data that meets Audio Data Interchange Format.
12. as voice data disposal route as described in the claim 11, wherein:
This second file header meets the into header format of rank audio coding audio compression form.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100226776A CN103219009A (en) | 2012-01-20 | 2012-01-20 | Audio frequency data processing device and method thereof |
| TW101106314A TW201331931A (en) | 2012-01-20 | 2012-02-24 | Apparatus for audio data processing and method therefor |
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| CN2012100226776A CN103219009A (en) | 2012-01-20 | 2012-01-20 | Audio frequency data processing device and method thereof |
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| CN103219009A true CN103219009A (en) | 2013-07-24 |
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| CN2012100226776A Pending CN103219009A (en) | 2012-01-20 | 2012-01-20 | Audio frequency data processing device and method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007977A (en) * | 2014-06-09 | 2014-08-27 | 威盛电子股份有限公司 | Electronic device and audio playing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1684523A (en) * | 2003-11-26 | 2005-10-19 | 三星电子株式会社 | Method and apparatus for encoding/decoding mpeg-4 bsac audio bitstream having auxillary information |
| CN101322375A (en) * | 2005-10-31 | 2008-12-10 | Sk电信有限公社 | Audio data packet format and decoding method thereof and method for correcting mobile communication terminal codec setup error and mobile communication terminal performance same |
| CN101611630A (en) * | 2006-10-17 | 2009-12-23 | 韩国电子通信研究院 | The composition file form of digital multimedia broadcasting contents, handle the method and apparatus of the digital multimedia broadcasting contents of this form |
| CN102089811A (en) * | 2008-07-11 | 2011-06-08 | 弗朗霍夫应用科学研究促进协会 | Audio encoder and decoder for encoding and decoding audio samples |
-
2012
- 2012-01-20 CN CN2012100226776A patent/CN103219009A/en active Pending
- 2012-02-24 TW TW101106314A patent/TW201331931A/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1684523A (en) * | 2003-11-26 | 2005-10-19 | 三星电子株式会社 | Method and apparatus for encoding/decoding mpeg-4 bsac audio bitstream having auxillary information |
| CN101322375A (en) * | 2005-10-31 | 2008-12-10 | Sk电信有限公社 | Audio data packet format and decoding method thereof and method for correcting mobile communication terminal codec setup error and mobile communication terminal performance same |
| CN101611630A (en) * | 2006-10-17 | 2009-12-23 | 韩国电子通信研究院 | The composition file form of digital multimedia broadcasting contents, handle the method and apparatus of the digital multimedia broadcasting contents of this form |
| CN102089811A (en) * | 2008-07-11 | 2011-06-08 | 弗朗霍夫应用科学研究促进协会 | Audio encoder and decoder for encoding and decoding audio samples |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007977A (en) * | 2014-06-09 | 2014-08-27 | 威盛电子股份有限公司 | Electronic device and audio playing method |
| US9978384B2 (en) | 2014-06-09 | 2018-05-22 | Via Technologies, Inc. | Audio decoding using modulator-demodulator |
| CN110083221A (en) * | 2014-06-09 | 2019-08-02 | 威盛电子股份有限公司 | Electronic device and audio frequency playing method |
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| TW201331931A (en) | 2013-08-01 |
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Address after: Taiwan, China Hsinchu Science Park 62 Industrial Park Road, No. two, building two Applicant after: CHENGYI ELECTRONICS CO. LTD. Address before: Taiwan, China Hsinchu Science Park 62 Industrial Park Road, No. two, building two Applicant before: Keystone Semiconductor Corp. |
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Application publication date: 20130724 |