A quantified coding method and device

A technology of quantization encoding and encoding data, which is applied in the field of quantization implementation schemes, can solve the problems of small quantization step size, increased computational complexity of the lattice vector quantization process, and the inability to achieve better processing results for large-value data, and achieve computational complexity. Reduce and overcome the complex effects of quantization and coding

Active Publication Date: 2008-09-17
HUAWEI TECH CO LTD
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Problems solved by technology

[0041] In the above-mentioned AMR-WB+ audio coding process, the corresponding lattice vector quantization method will have a smaller and smaller quantization step every time it is processed, so that it cannot achieve a better processi

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  • A quantified coding method and device
  • A quantified coding method and device
  • A quantified coding method and device

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Embodiment Construction

[0072] In the embodiment of the present invention, an implementation method based on split table coding is proposed to perform quantization processing on the data to be coded. In this method, after splitting large data, quantization processing is performed, thereby facilitating reliable realization of the quantization process.

[0073] The embodiment of the present invention specifically provides a quantization implementation scheme suitable for the combination of scalar and vector in the encoding process of multi-bit-rate audio, etc., so as to find the corresponding codeword in the basic codebook for a piece of data to be encoded. In this implementation, the vector quantization part includes an implementation based on split table encoding, and the scalar quantization is used for parameters that cannot be quantized by vector quantization, thereby reducing the complexity of the quantization encoding process and ensuring The corresponding coding performance is comparable to that ...

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Abstract

The invention relates to a method of quantizing coding and decoding and a device. The method mainly comprises: on quantizing coding end, if the nearest adjoint point value in a lattice vector is not in a basic code book, a processing mode of splitting the nearest addjoint point value is adopted to process a coding operation; corresponding, on quantizing decoding end, a correspnding processing mode is adopted to process a decoding operation. The invention embodiment can effectively improve processing efficiency in a course of quantizing coding and decoding via combining a basic code book coding mode and a scalar quantization coding mode.

Description

technical field [0001] The present invention relates to the technical field of encoding and decoding, in particular to a quantization implementation scheme in the encoding and decoding process. Background technique [0002] With the rapid development of multimedia services, it is not only necessary to improve the efficiency and real-time performance of encoding, but also to expand the encoding bandwidth for services such as audio. At present, the encoding methods used mainly include: HEAAC (High-Efficiency Advance Audio Coding, high-efficiency advanced audio coding), EAAC+ (Enhanced Advance Audio Coding plus, enhanced advanced audio coding) and AMR-WB+ (Adaptive MultiRate WideBand plus, adaptive Multi-rate wideband) coding, in which HEAAC and EAAC+ are extended from high-bit-rate audio encoders, and AMR-WB+ is a hybrid coding method formed by extending low-bit-rate speech coding. [0003] Usually, in the audio coding process, in order to better combine some characteristics ...

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Application Information

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IPC IPC(8): G10L19/04H03M7/30G10L19/02G10L19/038
CPCG10L19/038H04N19/00963H04N19/94
Inventor 邹耀刘佩林李伟张清许丽净许剑峰杜正中胡晨桑盛虎
Owner HUAWEI TECH CO LTD
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