CELP编码器中剩余码本的快速球形码解码算法

1999 IEEE Workshop on Speech Coding Proceedings. Model, Coders, and Error Criteria (Cat. No.99EX351) Pub Date : 1999-06-20 DOI:10.1109/SCFT.1999.781501

K. Koppinen, T. Mikkonen

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引用次数: 1

摘要

针对CELP语音编码器的固定码本，提出了一种使用代数码进行快速译码的新方法。该方法基于块码的网格结构，与以往的搜索方法不同，即使在合并标量增益的情况下，也可以快速优化剩余码本。该方法是灵活的，允许长块长度和使用任何代码，包括非线性代码。目前的性能不如标准代数编码方法高，但进一步的改进可能使其成为一种可行的方法。

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Fast spherical code decoding algorithms for the residual codebook in CELP coders

A new method for fast decoding when using algebraic codes for the fixed codebook in CELP speech coders is presented. This method is based on the trellis structure of a block code, and allows fast optimal search of the residual codebook even with a combined scalar gain, unlike previous search methods. The method is flexible, allowing for long block lengths and the use of any code including nonlinear ones. Currently the performance is not as high as with standard algebraic coding methods, but further refinements may make this a viable method.

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来源期刊

1999 IEEE Workshop on Speech Coding Proceedings. Model, Coders, and Error Criteria (Cat. No.99EX351)

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