一种新的低比特率低延迟代数CELP编码器

Proceedings of the Seventeenth National Radio Science Conference. 17th NRSC'2000 (IEEE Cat. No.00EX396) Pub Date : 2000-02-22 DOI:10.1109/NRSC.2000.838933

R. El-Kouatly, S.H. El-Ramiy

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引用次数: 1

摘要

基于ITU-T G.729标准及其新版本G.729A的编码器为大多数操作条件提供收费质量的语音，这些编码器是下一代蜂窝系统的主要候选者。本文提出了将这些编码器的比特率从8kbits /s降低到7kbits /s的新技术，而不会对编码器在清洁或噪声环境中的性能产生任何不良影响，并且不会增加编解码延迟。新的编码器被称为代数CELP (ACELP)，具有7 kb /s和15 ms算法延迟。

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A new low bit rate low delay algebraic CELP (ACELP) coder

The coders based upon ITU-T G.729 standard and its new version G.729A provide toll-quality speech for most operating conditions, and these coders are the prime candidates for the next generation of cellular systems. This paper presents new techniques for reducing the bit rate of these coders from 8 kbits/s to 7 kbits/s without introducing any bad effects into the coders' performance in clean or noisy environments, and without increasing the codec delay. The new coder is called algebraic CELP (ACELP) and has 7 kbits/s with 15 ms algorithmic delay.

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Proceedings of the Seventeenth National Radio Science Conference. 17th NRSC'2000 (IEEE Cat. No.00EX396)

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