Title :
Speech coding method using fuzzy vector quantization
Author :
Asakawa, Yoshiaki ; Ichikawa, Akira ; Yajima, Shun Ichi ; Yamasaki, Katsuya
Author_Institution :
Hitachi, Ltd., Tokyo, Japan
Abstract :
A medium-based, high-quality speech coding method that is promising for producing high-quality speech is proposed. One of its main features is the application of a PSE (power-spectrum envelope) analysis method. Another feature is the application of fuzzy vector quantization (FVQ), which can reduce quantization distortion to below that of conventional VQ. Reduced FVQ (R-FVQ), which uses a k-nearest-neighbor technique, a code-word selection technique, and a predetermined table, is proposed for reducing both the bit rate and quantization distortion. Using R-FVQ, speech was coded at 8-kb/s and the synthetic speech was of high quality and sounded natural
Keywords :
encoding; speech analysis and processing; speech synthesis; 8 kbit/s; code-word selection; fuzzy vector quantization; power-spectrum envelope; quantization distortion; speech coding; speech synthesis; Bit rate; Frequency domain analysis; Frequency estimation; Laboratories; Poles and zeros; Source coding; Speech analysis; Speech coding; Speech synthesis; Vector quantization;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on
Conference_Location :
Glasgow
DOI :
10.1109/ICASSP.1989.266537
