Techniques of very low bit-rate speech coding

被引：0

作者：

Cui, HJ ^{[1
]}

Tang, K ^{[1
]}

Zhao, M ^{[1
]}

Zhang, X ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Elect Engn, State Key Lab Microwave & Digital Commun, Beijing 100084, Peoples R China

来源：

CHINESE JOURNAL OF ELECTRONICS | 2004年 / 13卷 / 01期

关键词：

multi-frame; multi-sub-band; multimodel; vocoder; linear prediction; vector quantization;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Techniques of very low bit-rate speech coding, such as lower than 800 bps are presented in this paper. The techniques of multi-frame, multi-sub-band, multi-model, and vector quantization etc. are effective to decrease the bit-rate of vocoders based on a linear prediction model. These techniques bring the vocoder not only high quality of the reconstructed speech, but also robustness. Vocoders which apply those techniques can synthesize clear and intelligent speech with some naturalness. The mean DRT (Diagnostic rhyme test) score of an 800 bps vocoder is 89.2% and 86.3% for a 600 bps vocoder.

引用

页码：63 / 65

页数：3

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