A 1.44 kbps vocoder based on LSP

Author

Jiang, Tianyi ; Li, Yongming ; Chen, Hongyi

Author_Institution

Inst. of Microelectron., Tsinghua Univ., Beijing, China

Volume

2

fYear

2000

fDate

2000

Firstpage

697

Abstract

This paper presents a simple and efficient speech coding algorithm based on traditional LPC vocoder. By employing a dynamic smoothing method to optimize the pitch detector and split vector quantization to quantize the LSP parameters, a high level of speech quality and intelligibility is achieved at 1.44 kbps. Because of the low computational complexity and high coding efficiency, it is one of the best algorithms suitable for ASIC design

Keywords

application specific integrated circuits; computational complexity; linear predictive coding; smoothing methods; spectral analysis; speech coding; vector quantisation; vocoders; 1.44 kbit/s; ASIC design; LPC vocoder; LSP; LSP parameters; dynamic smoothing method; efficient speech coding algorithm; high coding efficiency; low computational complexity; pitch detector; speech intelligibility; speech quality; split VQ; split vector quantization; vocoder; Algorithm design and analysis; Application specific integrated circuits; Computational complexity; Detectors; Linear predictive coding; Optimization methods; Smoothing methods; Speech coding; Vector quantization; Vocoders;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Proceedings, 2000. WCCC-ICSP 2000. 5th International Conference on

Conference_Location

Beijing

Print_ISBN

0-7803-5747-7

Type

conf

DOI

10.1109/ICOSP.2000.891606

Filename

891606