谐波编码器频谱幅度的预测量化

2000 IEEE Workshop on Speech Coding. Proceedings. Meeting the Challenges of the New Millennium (Cat. No.00EX421) Pub Date : 2000-09-17 DOI:10.1109/SCFT.2000.878390

R. Prased, W. Chan

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引用次数: 0

摘要

针对谐波编码器产生的变维谱幅矢量，提出了一种新的预测矢量量化编码方案。该方案具有安全网预测结构，但它使用了合成分析码本搜索。设计了一种“闭环”码本设计算法。与传统的预测VQ设计方法相比，得到了显著的改进。

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Predictive quantization of spectral amplitudes for harmonic coders

We present a novel predictive vector quantization scheme for coding the variable-dimension spectral amplitude vectors produced by harmonic coders. The scheme has a safety-net prediction structure, but it uses analysis-by-synthesis codebook search. A "closed-loop" codebook design algorithm is devised. Significant improvement over conventional predictive VQ design methods is obtained.

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2000 IEEE Workshop on Speech Coding. Proceedings. Meeting the Challenges of the New Millennium (Cat. No.00EX421)

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