Stereo coding method and stereo decoding method

A coding method and stereo technology, applied in the field of stereo coding and decoding, can solve problems such as the complexity of the overall process, achieve high audio quality, reduce the amount of calculation and delay overhead, and reduce the amount of data

Active Publication Date: 2015-02-11
TSINGHUA UNIV
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  • Claims
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Problems solved by technology

[0006] Aiming at the problem that the overall process of the existing stereo encoding and decoding method is

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  • Stereo coding method and stereo decoding method
  • Stereo coding method and stereo decoding method
  • Stereo coding method and stereo decoding method

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Embodiment Construction

[0047] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so that implementers of the present invention can fully understand how the present invention uses technical means to solve technical problems, and achieve the realization process of technical effects and according to the above-mentioned realization process The present invention is implemented concretely. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0048] The invention proposes a stereo codec method. Next, the specific encoding and decoding process of the method of the present invention will be specifically described based on the flow chart. The steps shown in the flowcharts of the figures can be performed in a comp...

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Abstract

The invention discloses a stereo coding method which comprises the following steps: acquiring a time-domain signal, selecting a block length, converting time frequency, coding stereo parameters, processing a single track and packaging. The invention also discloses a stereo decoding method which comprises the following steps: unpackaging, decoding the single track, decoding the stereo parameters, processing stereo and inversely converting the time frequency. After the stereo coding method and the stereo decoding method are adopted, an integration framework which is more compact with a core single track coding and encoding device is provided, and the step of converting the time frequency is reused, so that the calculated amount and the time delay cost which are caused by repeatedly converting the time frequency can be reduced; furthermore, a more flexible coding method of interframe combination and intra-frame combination is provided, so that the data size of the final coding result is reduced, and the higher audio quality can be obtained under the different stereo parameter code rate configurations.

Description

technical field [0001] The invention relates to the technical field of audio and video, in particular to a stereo encoding and decoding method. Background technique [0002] In the prior art, recording sound with digital methods has stronger advantages than recording sound with analog methods, such as strong anti-noise ability during transmission, increased audio dynamic range, and no signal attenuation for multiple duplications. Audio files are therefore usually recorded digitally. However, as people's requirements for multimedia sound are getting higher and higher, the amount of data required to record sound is increasing. Audio files with a large amount of data not only need to occupy a wide transmission bandwidth during the transmission process, but also need to occupy a large amount of storage space during the storage process. In order to solve the problem of excessive data volume of audio files, digital audio compression technology is usually used in digital audio to...

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Application Information

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IPC IPC(8): G10L19/008
Inventor 窦维蓓卢敏
Owner TSINGHUA UNIV
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