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Audio coding and decoding system

A technology of audio codec and audio codec, which is applied in the field of audio codec, can solve the problems of reducing the code rate, etc., and achieve the effects of reduced resource consumption, good weight, and weight control

Inactive Publication Date: 2014-12-03
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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  • Claims
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Problems solved by technology

With the gradual deepening of the understanding of the human ear's auditory characteristics, modern audio compression technology adopts the method of perceptual audio compression coding, on the basis of eliminating the usual coding redundancy and time-frequency domain related redundancy, by eliminating the human ear can not perceive Redundant information, further reducing the bit rate while ensuring good perceived sound quality

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Embodiment Construction

[0037] The audio codec system proposed by the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in very simplified form and use imprecise ratios, which are only used for the purpose of conveniently and clearly assisting in describing the embodiments of the present invention.

[0038] The core idea of ​​the present invention is to provide an audio codec system, which realizes high-fidelity audio coding and decoding on the same audio codec unit at the same time, greatly reduces resource consumption, and reduces product power consumption, volume, and weight. Get well controlled.

[0039] Please refer to figure 1 , figure 1 is a structural block diagram of an audio codec system provided by an embodiment of the present invention, such as figure 1...

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Abstract

The invention brings forward an audio coding and decoding system. An advanced audio coding (AAC) and decoding algorithm is adopted by the audio coding and decoding system at the same audio coding and decoding unit (DSP). Meanwhile, high-fidelity audio coding and decoding are realized so that resource consumption is substantially reduced, and product power consumption, volume and weight are well controlled.

Description

[0001] technical field [0002] The present invention relates to the technical field of audio codec, in particular to an audio codec system. [0003] Background technique [0004] With the rapid development of multimedia and network technology, people have higher and higher requirements for audio data network transmission and audio quality. It is hoped that while retaining the characteristics of large dynamic range of audio data, it should be as distortion-free as possible or in line with human auditory characteristics. Therefore, how to reduce the data rate of audio data has become the most direct purpose for people to design various audio coding algorithms. As the compression ratio gets higher and the sound quality gets better and better, the complexity of the compression algorithm keeps increasing. [0005] Traditional audio compression methods achieve the purpose of reducing the bit rate by eliminating the inherent redundant components in the audio signal, and the comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/16G10L19/008
Inventor 杨晓华潘东梅刘艳丽邵莹
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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