CN105405443A - Audio signal compression processing system based on APE format and method thereof - Google Patents
Audio signal compression processing system based on APE format and method thereof Download PDFInfo
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- CN105405443A CN105405443A CN201510696151.XA CN201510696151A CN105405443A CN 105405443 A CN105405443 A CN 105405443A CN 201510696151 A CN201510696151 A CN 201510696151A CN 105405443 A CN105405443 A CN 105405443A
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- ape
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- 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
- G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
Abstract
The invention provides an audio signal compression processing system based on an APE format and a method thereof. A system configuration register, a state register, a DMA controller, a coefficient storage module, a calculating module, a state storage module and an adaptive coefficient generation module are included. The system configuration register, the state register, the calculating module and the state storage module are connected to the DMA controller. The calculating module is connected to the coefficient storage module and the state storage module respectively. The adaptive coefficient generation module is connected to the coefficient storage module and the state storage module respectively. By using the audio signal compression processing system based on the APE format and the method thereof, through a hardware circuit, a lossless compression processing speed of the audio signal of the APE format is effectively increased; an important usage value is possessed on aspects of electronic products and especially speech recognition service processing; and a user experience is increased.
Description
Technical field
The present invention relates to the technical field of digital signal processing, particularly relate to a kind of audio signal compression disposal system based on APE form and method.
Background technology
APE is as a kind of Lossless Compression audio format, and because there is comparatively morning, in the whole world, particularly there is customer group widely China's Mainland.Irreversibly to delete data different to reduce source file volume from this kind of lossy compression method of MP3 form, and this kind of nondestructive compression type of APE is with the recording mode of more refining to reduce volume, and after reduction, data are the same with source file, thus ensure that the integrality of file.APE is suppressed by software Monkey'saudio and obtains, and developer is MatthewT.Ashland, open source.
Compare same class file format FLAC, APE has the following advantages:
(1) there is debugging ability but do not provide error correction, the harmless and pure of file can be ensured;
(2) compressibility is about 55%, higher than FLAC, and volume is probably the half of former CD, is convenient to store.
In prior art, generally can be carried out the Lossless Compression of audio digital signals by software approach.But, needed the cpu resource of consumption systems by the Lossless Compression of the sound signal of software simulating APE form, cause processing speed relatively slow.For the equipment that hardware performance is not strong, as smart mobile phone, panel computer etc., then Consumer's Experience can be badly influenced.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of audio signal compression disposal system based on APE form and method, the computing velocity of hardware-efficient is utilized to realize the Lossless Compression of the sound signal of APE form fast, improve system processing speed, enhance Consumer's Experience.
For achieving the above object and other relevant objects, the invention provides a kind of audio signal compression disposal system based on APE form, comprise system configuration register and status register, dma controller, coefficient storage module, computing module, state-storage module and adaptation coefficient generation module; Described system configuration register is all connected with described dma controller with described state-storage module with status register, described computing module, described computing module is connected with described state-storage module with described coefficient storage module respectively, and described adaptation coefficient generation module is connected with described state-storage module with described coefficient storage module respectively; Described system configuration register is connected with System control bus with status register, for reading the configuration information of system health information that described System control bus sends and dma controller; Described dma controller is connected with dma bus, for reading the voice data and acceleration mode information that described dma bus sends, and is sent to computing module and state-storage module.Described state-storage module is for storing the acceleration mode information of APE algorithm; Described adaptation coefficient generation module is used for the adaptation coefficient generating APE algorithm according to the acceleration mode information of APE algorithm; Described coefficient storage module is for storing the adaptation coefficient of the APE algorithm of described adaptation coefficient generation module generation; Described computing module is used for performing APE algorithm according to the adaptation coefficient of APE algorithm and voice data.
According to the above-mentioned audio signal compression disposal system based on APE form, wherein: described computing module is calculated by fixed point MAC and realizes.
According to the above-mentioned audio signal compression disposal system based on APE form, wherein: described acceleration mode information comprises APE design factor state when current code stream is encoded and encodes whether be in busy condition information.
According to the above-mentioned audio signal compression disposal system based on APE form, wherein: described adaptation coefficient generation module adopts state machine to realize, adopt acceleration mode information at front audio code stream to generate the adaptation coefficient of present video code stream.
According to the above-mentioned audio signal compression disposal system based on APE form, wherein: described coefficient storage module adopts register.
Meanwhile, the present invention also provides a kind of audio signal compression disposal route based on APE form, comprises the following steps:
Step S1, system configuration register and status register read the configuration information of system health information that System control bus sends and dma controller;
The voice data that step S2, dma controller reading DMA bus send and acceleration mode information;
Step S3, adaptation coefficient generation module generate the adaptation coefficient of APE algorithm according to the acceleration mode information of APE algorithm;
Step S4, computing module perform APE algorithm according to the adaptation coefficient of APE algorithm and voice data.
According to the above-mentioned audio signal compression disposal route based on APE form, wherein: described computing module is calculated by fixed point MAC and performs APE algorithm.
According to the above-mentioned audio signal compression disposal route based on APE form, wherein: described acceleration mode information comprises APE design factor state when current code stream is encoded and encodes whether be in busy condition information.
According to the above-mentioned audio signal compression disposal route based on APE form, wherein: described adaptation coefficient generation module adopts state machine to realize, adopt acceleration mode information at front audio code stream to generate the adaptation coefficient of present video code stream.
As mentioned above, the audio signal compression disposal system based on APE form of the present invention and method, have following beneficial effect:
(1) processing speed of the Lossless Compression of the sound signal of APE form is effectively improve by hardware circuit;
(2) in electronic product particularly speech recognition business processing, there is important use value;
(3) improve Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation of the audio signal compression disposal system based on APE form of the present invention;
Fig. 2 is shown as the process flow diagram of the audio signal compression disposal route based on APE form of the present invention.
Element numbers explanation
1 system configuration register and status register
2DMA controller
3 coefficient storage modules
4 computing modules
5 state-storage module
6 adaptation coefficient generation modules
Embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this instructions can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this instructions also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.
It should be noted that, the diagram provided in the present embodiment only illustrates basic conception of the present invention in a schematic way, then only the assembly relevant with the present invention is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
With reference to Fig. 1, the audio signal compression disposal system based on APE form of the present invention comprises system configuration register and status register 1, dma controller 2, coefficient storage module 3, computing module 4, state-storage module 5 and adaptation coefficient generation module 6.Wherein, system configuration register is all connected with dma controller 2 with state-storage module 5 with status register 1, computing module 4, computing module 4 is connected with state-storage module 5 with coefficient storage module 3 respectively, and adaptation coefficient generation module 6 is connected with state-storage module 5 with coefficient storage module 3 respectively.
System configuration register is connected with System control bus with status register 1, the system health information sent for reading system control bus and the configuration information of dma controller.
Dma controller 2 is connected with dma bus, the voice data sent for reading DMA bus and acceleration mode information, and is sent to computing module 4 and state-storage module 5.
Wherein, acceleration mode information comprises APE design factor state when current code stream is encoded and encodes whether be in busy condition information.
State-storage module 5 is for storing the acceleration mode information of APE algorithm.
Adaptation coefficient generation module 6 is for generating the adaptation coefficient of APE algorithm according to the acceleration mode information of APE algorithm.
Wherein, adaptation coefficient generation module 6 adopts state machine to realize, and adopts acceleration mode information at front audio code stream to generate the adaptation coefficient of present video code stream.Particularly, acceleration mode information is a buffer stopper constantly refreshed, first the acceleration mode information needed for front audio code stream is recorded in, then adaptation coefficient generation module is supplied to, produce adaptation coefficient and carry out arithmetic operator, computation process can feed back the required acceleration mode information of lower group of audio code stream, for the generation of the adaptation coefficient of lower group of audio code stream, thus carry out next in turn APE algorithm operating.
Coefficient storage module 3 is for storing the adaptation coefficient of the APE algorithm of adaptation coefficient generation module generation.
Preferably, coefficient storage module 3 adopts register, as SDRAM.
Computing module 4 is for performing APE algorithm according to the adaptation coefficient of APE algorithm and voice data.
Wherein, computing module is calculated by fixed point MAC and realizes.
With reference to Fig. 2, on the basis of the audio signal compression disposal system based on APE form of the present invention, the audio signal compression disposal route based on APE form of the present invention comprises the following steps:
Step S1, system configuration register and status register read the configuration information of system health information that System control bus sends and dma controller.
The voice data that step S2, dma controller reading DMA bus send and acceleration mode information.
Wherein, acceleration mode information comprises APE design factor state when current code stream is encoded and encodes whether be in busy condition information.
Step S3, adaptation coefficient generation module generate the adaptation coefficient of APE algorithm according to the acceleration mode information of APE algorithm.
Wherein, adaptation coefficient generation module adopts state machine to realize, and adopts acceleration mode information at front audio code stream to generate the adaptation coefficient of present video code stream.Particularly, acceleration mode information is a buffer stopper constantly refreshed, first the acceleration mode information needed for front audio code stream is recorded in, then adaptation coefficient generation module is supplied to, produce adaptation coefficient and carry out arithmetic operator, computation process can feed back the required acceleration mode information of lower group of audio code stream, for the generation of the adaptation coefficient of lower group of audio code stream, thus carry out next in turn APE algorithm operating.
Step S4, computing module perform APE algorithm according to the adaptation coefficient of APE algorithm and voice data.
Wherein, computing module is calculated by fixed point MAC and performs APE algorithm.
In sum, the audio signal compression disposal system based on APE form of the present invention and method effectively improve the processing speed of the Lossless Compression of the sound signal of APE form by hardware circuit; Electronic product particularly speech recognition business processing has important use value; Improve Consumer's Experience.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (9)
1. based on an audio signal compression disposal system for APE form, it is characterized in that: comprise system configuration register and status register, dma controller, coefficient storage module, computing module, state-storage module and adaptation coefficient generation module; Described system configuration register is all connected with described dma controller with described state-storage module with status register, described computing module, described computing module is connected with described state-storage module with described coefficient storage module respectively, and described adaptation coefficient generation module is connected with described state-storage module with described coefficient storage module respectively;
Described system configuration register is connected with System control bus with status register, for reading the configuration information of system health information that described System control bus sends and dma controller;
Described dma controller is connected with dma bus, for reading the voice data and acceleration mode information that described dma bus sends, and is sent to computing module and state-storage module;
Described state-storage module is for storing the acceleration mode information of APE algorithm;
Described adaptation coefficient generation module is used for the adaptation coefficient generating APE algorithm according to the acceleration mode information of APE algorithm;
Described coefficient storage module is for storing the adaptation coefficient of the APE algorithm of described adaptation coefficient generation module generation;
Described computing module is used for performing APE algorithm according to the adaptation coefficient of APE algorithm and voice data.
2. the audio signal compression disposal system based on APE form according to claim 1, is characterized in that: described computing module is calculated by fixed point MAC and realizes.
3. the audio signal compression disposal system based on APE form according to claim 1, is characterized in that: described acceleration mode information comprises APE design factor state when current code stream is encoded and encodes whether be in busy condition information.
4. the audio signal compression disposal system based on APE form according to claim 1, it is characterized in that: described adaptation coefficient generation module adopts state machine to realize, adopt acceleration mode information at front audio code stream to generate the adaptation coefficient of present video code stream.
5. the audio signal compression disposal system based on APE form according to claim 1, is characterized in that: described coefficient storage module adopts register.
6., based on an audio signal compression disposal route for APE form, it is characterized in that: comprise the following steps:
Step S1, system configuration register and status register read the configuration information of system health information that System control bus sends and dma controller;
The voice data that step S2, dma controller reading DMA bus send and acceleration mode information;
Step S3, adaptation coefficient generation module generate the adaptation coefficient of APE algorithm according to the acceleration mode information of APE algorithm;
Step S4, computing module perform APE algorithm according to the adaptation coefficient of APE algorithm and voice data.
7. the audio signal compression disposal route based on APE form according to claim 6, is characterized in that: described computing module is calculated by fixed point MAC and performs APE algorithm.
8. the audio signal compression disposal route based on APE form according to claim 6, is characterized in that: described acceleration mode information comprises APE design factor state when current code stream is encoded and encodes whether be in busy condition information.
9. the audio signal compression disposal route based on APE form according to claim 6, it is characterized in that: described adaptation coefficient generation module adopts state machine to realize, adopt acceleration mode information at front audio code stream to generate the adaptation coefficient of present video code stream.
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Cited By (1)
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| CN109003603A (en) * | 2017-10-30 | 2018-12-14 | 上海寒武纪信息科技有限公司 | Audio recognition method and Related product |
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Application publication date: 20160316 |