CN102623040A - Data synthesizing and playing system and method - Google Patents
Data synthesizing and playing system and method Download PDFInfo
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- CN102623040A CN102623040A CN2012100628859A CN201210062885A CN102623040A CN 102623040 A CN102623040 A CN 102623040A CN 2012100628859 A CN2012100628859 A CN 2012100628859A CN 201210062885 A CN201210062885 A CN 201210062885A CN 102623040 A CN102623040 A CN 102623040A
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Abstract
The invention discloses a data synthesizing and playing system which is used for synthesizing the dual-channel data of an MP3 file into single-channel data and playing. The data synthesizing and playing system comprises an MP3 data stream input module, a frame decoding module connected with the MP3 data stream input module, a data synthesis module connected with the frame decoding module, a sub-band synthesis filtering module connected with the data synthesis module and an audio data output module connected with the sub-band synthesis filtering module, wherein the frame decoding module outputs left-channel sub-frequency band data and right-channel sub-frequency band data to the data synthesis module; the data synthesis module synthesizes the left-channel sub-frequency band data and the right-channel sub-frequency band data to generate synthetic sub-frequency band data to the sub-band synthesis filtering module; and the sub-band synthesis filtering module decodes the synthetic sub-frequency band data and outputs synthetic audio data to the audio data output module to be played. The invention also provides a data synthesizing and playing method. Through the invention, the application cost is reduced.
Description
Technical field
The present invention relates to a kind of synthesis system and method, refer to that especially a kind of two-channel data with mp3 file synthesize the synthetic Play System of data and the synthetic player method of data of mono data.
Background technology
MP3 is a kind of audio compression techniques, and its full name is dynamic image expert compression standard audio frequency aspect 3 (Moving Picture Experts Group Audio Layer III), abbreviates MP3 as.
MP3 format is as a kind of traditional voice data compressed format, during the storage of widespread use Modern Music is play.The two-channel and the mono data coding/decoding method of standard in the agreement of MP3 format, have been stipulated; But; In the application of reality, tend to run into and need the two-channel data be synthesized the situation that mono data is play, to this situation; Common processing mode is synthesized the left and right acoustic channels data that store after accomplishing in the data decode of standard two-channel, plays after synthesizing.
See also Fig. 1, Fig. 1 is the system architecture diagram of the synthetic Play System of existing data.The synthetic Play System of existing data comprises a right data output module and the data synthesis module that L channel data outputting module, that frame decoding module, a L channel subband synthetic filtering module, a R channel subband synthetic filtering module, that a MP3 data stream load module, links to each other with this MP3 data stream load module link to each other with this L channel subband synthetic filtering module links to each other with this R channel subband synthetic filtering module; The storage space of this L channel subband synthetic filtering module and this R channel subband synthetic filtering module is the 1024*W bit, and W is a data bit width.This MP3 data stream load module with the data information transfer of mp3 file to this frame decoding module; This frame decoding module is decoded to mp3 file; And output L channel sub-band data are to this L channel subband synthetic filtering module; Output R channel sub-band data are to this R channel subband synthetic filtering module; This L channel subband synthetic filtering module is to be sent to this L channel data outputting module after the L channel data with the data decode of L channel sub-band; This R channel subband synthetic filtering module is to be sent to this right data output module after the right data with the data decode of R channel sub-band, this data synthesis module with the right data addition of the L channel data of this L channel data outputting module output and the output of this right data output module after divided by 2, produce the voice data exported and play.
In the decode procedure of mp3 file, the value that needs a large amount of storage spaces to be used for storing intermediate data.And the synthetic Play System of existing data is not optimized middle storage space, sacrifices using monophony not reduce application cost under the stereosonic effect.Therefore, thus be necessary to provide a kind of size that can reduce the intermediate storage space to reduce the synthetic Play System of data and the synthetic player method of data that are used for the two-channel data of mp3 file are synthesized mono data of application cost.
Summary of the invention
In view of above content, be necessary to provide a kind of synthetic Play System of data and synthetic player method of data of being used for the two-channel data of mp3 file are synthesized mono data that can reduce application cost.
A kind of data are synthesized Play System; Being used for two-channel data with a mp3 file synthesizes mono data and plays; The synthetic Play System of said data comprise one be used to extract the data message of said mp3 file MP3 data stream load module, the voice data output module that subband synthetic filtering module and that data synthesis module, that the frame decoding module, that is used for that said mp3 file is decoded links to each other with said frame decoding module links to each other with said data synthesis module links to each other with said subband synthetic filtering module that links to each other with said MP3 data stream load module; Said frame decoding module is exported L channel sub-band data and R channel sub-band data to said data synthesis module; Said data synthesis module synthesizes sub-band data to the said subband synthetic filtering module after generation one is synthesized with said L channel sub-band data and said R channel sub-band data; Said subband synthetic filtering module is decoded to said sub-band data after synthetic, and exports voice data to a said voice data output module after synthetic and play.
A kind of data are synthesized player method, are used for two-channel data with a mp3 file and synthesize mono data and play, and the synthetic player method of said data may further comprise the steps:
One MP3 data stream load module extracts the data message of said mp3 file, and transmits it to a frame decoding module;
Said frame decoding module is decoded to said mp3 file according to the data message of the mp3 file that receives, and exports L channel sub-band data and R channel sub-band data to a data synthesis module;
Said data synthesis module synthesizes sub-band data to the subband synthetic filtering module after generation one is synthesized with said L channel sub-band data and said R channel sub-band data;
Said subband synthetic filtering module is decoded to the sub-band data after synthetic, and exports voice data to a voice data output module after synthetic; And
Said voice data output module is play the voice data that receives.
Relative prior art; Synthetic Play System of data of the present invention and the synthetic player method of data are guaranteeing under the correct situation of synthetic back data; A shared storage space after making L channel sub-band data and R channel sub-band data synthetic; Reduce the size in intermediate storage space, improved the utilization rate of storage resources, thereby reduced application cost.
Description of drawings
Fig. 1 is the system architecture diagram of the synthetic Play System preferred embodiments of data in the prior art.
Fig. 2 is the system architecture diagram of the synthetic Play System preferred embodiments of data of the present invention.
Fig. 3 is the process flow diagram of the synthetic player method preferred embodiments of data of the present invention.
Embodiment
See also Fig. 2, the synthetic Play System preferred embodiments of data of the present invention comprises the voice data output module that subband synthetic filtering module and that data synthesis module, that frame decoding module, that a MP3 data stream load module, links to each other with this MP3 data stream load module links to each other with this frame decoding module links to each other with this data synthesis module links to each other with this subband synthetic filtering module.Wherein, the storage space of this subband synthetic filtering module is the 1024*W bit, and W is a data bit width.
This MP3 data stream load module is used to extract the data message of a mp3 file, and transmits it to this frame decoding module; This frame decoding module is used for mp3 file is decoded, and output L channel sub-band data and R channel sub-band data are to this data synthesis module; This data synthesis module with L channel sub-band data and the addition of R channel sub-band data after divided by 2, produce sub-band data after synthetic to this subband synthetic filtering module; This subband synthetic filtering module is used for the sub-band data after synthetic are decoded, and exports voice data to this voice data output module after synthetic and play.
This shows; The synthetic Play System preferred embodiments of data of the present invention is put this data synthesis module to this subband synthetic filtering module; A shared storage space after making L channel sub-band data and R channel sub-band data synthetic; Reduce the size in intermediate storage space, improved the utilization rate of storage resources, thereby reduced application cost.
See also Fig. 3, the synthetic player method preferred embodiments of data of the present invention may further comprise the steps:
Step 1, this MP3 data stream load module extracts the data message of a mp3 file, and transmits it to this frame decoding module.
Step 2, this frame decoding module is decoded to this mp3 file according to the data message of the mp3 file that receives, and exports L channel sub-band data and R channel sub-band data to this data synthesis module.
Step 3, this data synthesis module with L channel sub-band data and the addition of R channel sub-band data after divided by 2, produce sub-band data after synthetic to this subband synthetic filtering module.
Step 4, this subband synthetic filtering module is decoded to the sub-band data after synthetic, and exports a voice data after synthetic to this voice data output module.
Step 5, this voice data output module is play the voice data that receives.
In the synthetic player method preferred embodiments of data of the present invention; Because to getting final product divided by 2 after just simple L channel data and the right data addition with synchronization of the synthetic method of L channel data and right data; Therefore correct in order to guarantee the data after synthetic; Need to confirm that last does the step of nonlinear transformation, and the addition of this step after, carrying out L channel data and right data is synthesized and is got final product.In addition, in the present invention, the step of generated data is forward, can save storage space more.
The condition that nonlinear transformation occurs be generally operator non-linear with non-linear two kinds of condition; In the present invention; The course of work that can extrapolate this subband synthetic filtering module according to the work agreement flow process of standard is linear transformation, and promptly the step of a last nonlinear transformation that occurs is the step of this frame decoding module decoding, in order to guarantee the correctness of synthetic back data; And describe according to the front; Can this data synthesis module be carried out the synthetic step of data and put to the step of this subband synthetic filtering module work, make the shared storage space in the synthetic back of L channel sub-band data and R channel sub-band data, reduce the size in intermediate storage space; Improve the utilization rate of storage resources, thereby reduced application cost.
Can be found out that by above analysis synthetic Play System of data of the present invention and the synthetic player method preferred embodiments of data have been practiced thrift the storage space of 1024*W bit, W is a data bit width.In addition, in practical application, the present invention can be applicable in the audio player, has saved the above storage space of 2K, and on tonequality, has not brought any damage.
Synthetic Play System of data of the present invention and the synthetic player method of data are through making the shared storage space in the synthetic back of L channel sub-band data and R channel sub-band data; Reduced the size in intermediate storage space; Improve the utilization rate of storage resources, thereby reduced application cost.
Claims (9)
1. data are synthesized Play System; Being used for two-channel data with a mp3 file synthesizes mono data and plays; It is characterized in that: the synthetic Play System of said data comprise one be used to extract the data message of said mp3 file MP3 data stream load module, the voice data output module that subband synthetic filtering module and that data synthesis module, that the frame decoding module, that is used for that said mp3 file is decoded links to each other with said frame decoding module links to each other with said data synthesis module links to each other with said subband synthetic filtering module that links to each other with said MP3 data stream load module; Said frame decoding module is exported L channel sub-band data and R channel sub-band data to said data synthesis module; Said data synthesis module synthesizes sub-band data to the said subband synthetic filtering module after generation one is synthesized with said L channel sub-band data and said R channel sub-band data; Said subband synthetic filtering module is decoded to said sub-band data after synthetic, and exports voice data to a said voice data output module after synthetic and play.
2. data as claimed in claim 1 are synthesized Play System, it is characterized in that: the storage space of said subband synthetic filtering module is the 1024*W bit, and W is a data bit width.
3. data as claimed in claim 1 are synthesized Play System, it is characterized in that: the course of work of said subband synthetic filtering module is linear transformation, and the course of work of said frame decoding module is a nonlinear transformation.
4. data as claimed in claim 1 are synthesized Play System, it is characterized in that: said frame decoding module is decoded to said mp3 file according to the data message of the said mp3 file that receives.
5. data as claimed in claim 1 are synthesized Play System; It is characterized in that: said data synthesis module with said L channel sub-band data and the addition of said R channel sub-band data after divided by 2, and produce sub-band data to the said subband synthetic filtering module after synthetic.
6. the synthetic player method of data is used for the two-channel data of a mp3 file are synthesized mono data, and the synthetic player method of said data may further comprise the steps:
One MP3 data stream load module extracts the data message of said mp3 file, and transmits it to a frame decoding module;
Said frame decoding module is decoded to said mp3 file according to the data message of the mp3 file that receives, and exports L channel sub-band data and R channel sub-band data to a data synthesis module;
Said data synthesis module synthesizes sub-band data to the subband synthetic filtering module after generation one is synthesized with said L channel sub-band data and said R channel sub-band data;
Said subband synthetic filtering module is decoded to the sub-band data after synthetic, and exports voice data to a voice data output module after synthetic; And
Said voice data output module is play the voice data that receives.
7. data as claimed in claim 6 are synthesized player method, it is characterized in that: the storage space of said subband synthetic filtering module is the 1024*W bit, and W is a data bit width.
8. data as claimed in claim 6 are synthesized player method, it is characterized in that: the course of work of said subband synthetic filtering module is linear transformation, and the course of work of said frame decoding module is a nonlinear transformation.
9. data as claimed in claim 6 are synthesized player method; It is characterized in that: said data synthesis module with said L channel sub-band data and the addition of said R channel sub-band data after divided by 2, and produce sub-band data to the said subband synthetic filtering module after synthetic.
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| CN108834037A (en) * | 2018-06-12 | 2018-11-16 | 广州酷狗计算机科技有限公司 | The method and apparatus of playing audio-fequency data |
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| US20070067472A1 (en) * | 2005-09-20 | 2007-03-22 | Lsi Logic Corporation | Accurate and error resilient time stamping method and/or apparatus for the audio-video interleaved (AVI) format |
| CN101656099A (en) * | 2008-08-18 | 2010-02-24 | 安凯（广州）软件技术有限公司 | Audio and video production and play method used for MP3 player |
| CN202487174U (en) * | 2012-03-12 | 2012-10-10 | 四川和芯微电子股份有限公司 | Data synthesizing and playing system |
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| US20040231495A1 (en) * | 2003-05-23 | 2004-11-25 | Wen-Shan Huang | Digital music conversion device |
| US20070067472A1 (en) * | 2005-09-20 | 2007-03-22 | Lsi Logic Corporation | Accurate and error resilient time stamping method and/or apparatus for the audio-video interleaved (AVI) format |
| CN101656099A (en) * | 2008-08-18 | 2010-02-24 | 安凯（广州）软件技术有限公司 | Audio and video production and play method used for MP3 player |
| CN202487174U (en) * | 2012-03-12 | 2012-10-10 | 四川和芯微电子股份有限公司 | Data synthesizing and playing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108834037A (en) * | 2018-06-12 | 2018-11-16 | 广州酷狗计算机科技有限公司 | The method and apparatus of playing audio-fequency data |
| CN108834037B (en) * | 2018-06-12 | 2019-09-13 | 广州酷狗计算机科技有限公司 | The method and apparatus of playing audio-fequency data |
| US11272304B2 (en) | 2018-06-12 | 2022-03-08 | Guangzhou Kugou Computer Technology Co., Ltd. | Method and terminal for playing audio data, and storage medium thereof |
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