Title :
A 2.4 KBPS speech coding method based on fuzzy vector quantization
Author :
Asakawa, Yuki ; Yamasaki, Kazuhiko ; Ichikawa, Akihiko ; Ozawa, K.
Author_Institution :
Hitachi Ltd., Tokyo
Abstract :
A low-bit-rate, high-quality speech coding method is proposed. It is based on a PSE (power-spectrum envelope) analysis-synthesis method that provides high-quality synthetic speech. Its parameters are quantized using complementary fuzzy vector quantization (C-FVQ), which is newly developed to reduce the bit rate with small quantization distortion. With C-FVQ, an input vector is represented as a linear combination of a small number of complementary codewords that minimize quantization distortion with optimal coefficients. Speech coded at 2.4 kb.p.s. using the most practical type of C-FVQ is of high quality
Keywords :
encoding; fuzzy set theory; spectral analysis; speech analysis and processing; speech synthesis; 2.4 kbit/s; fuzzy vector quantization; power-spectrum envelope; quantization distortion; speech analysis; speech coding method; speech synthesis; Bit rate; Books; Channel capacity; Digital communication; Laboratories; Land mobile radio; Speech analysis; Speech coding; Speech synthesis; Vector quantization;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.115840
