DocumentCode
1398779
Title
Adaptive forward-backward quantizer for low bit rate high-quality speech coding
Author
Vass, J. ; Yunxin Zhao ; Xinhua Zhuang
Author_Institution
Dept. of Comput. Eng., Missouri Univ., Columbia, MO
Volume
5
Issue
6
fYear
1997
fDate
11/1/1997 12:00:00 AM
Firstpage
552
Lastpage
557
Abstract
A novel variable-rate linear predictive coding (LPC) parameter quantization scheme is proposed, in which linear prediction is done by using either the current (forward LPC) or previously decoded (backward LPC) speech blocks. The proposed LPC quantization scheme was integrated into the FS1016 Federal Standard CELP coder. Significant LPC bit rate reduction is achieved without compromising the decoded speech quality
Keywords
adaptive codes; linear predictive coding; quantisation (signal); spectral analysis; speech coding; speech intelligibility; variable rate codes; FS1016 Federal Standard CELP coder; LPC parameter quantization; adaptive forward-backward quantizer; bit rate reduction; decoded speech quality; high quality speech coding; logarithmical spectral distortion measure; low bit rate coding; speech blocks; variable rate linear predictive coding; Bandwidth; Bit rate; Code standards; Decoding; Delay; Linear predictive coding; NASA; Quantization; Speech analysis; Speech coding;
fLanguage
English
Journal_Title
Speech and Audio Processing, IEEE Transactions on
Publisher
ieee
ISSN
1063-6676
Type
jour
DOI
10.1109/89.641300
Filename
641300
Link To Document