Title :
Multiband excitation coding of speech at 2.0 kbps
Author :
Yu, W.M.E. ; Chan, C.F.
Author_Institution :
Dept. of Electron. Eng., City Polytech. of Hong Kong, Kowloon, Hong Kong
Abstract :
A 2.0 kbps high quality speech coder is presented in the paper. The coding technique is based on the multiband excitation (MBE) model which is efficient in the modelling of speech excitation. The spectral envelope is by linear predictive coding (LPC) The quantization of LPC parameters employs a 2-stage split residual vector quantization (SRVQ) scheme. Performance comparisons with other spectral coding schemes using discrete cosine transform DCT) and two-dimensional differential LSP (2DdLSP) are given
Keywords :
linear predictive coding; speech coding; vector quantisation; 2-stage split residual vector quantization scheme; 2.0 kbit/s; 2.0 kbps high quality speech coder; SRVQ scheme; coding technique; discrete cosine transform; line spectrum pair; linear predictive coding; multiband excitation; performance; quantization; spectral coding schemes; spectral envelope; speech excitation; two-dimensional differential LSP; Bit rate; Cities and towns; Discrete cosine transforms; Fourier transforms; Frequency estimation; Impedance; Linear predictive coding; Speech analysis; Speech coding; Vector quantization;
Conference_Titel :
Speech, Image Processing and Neural Networks, 1994. Proceedings, ISSIPNN '94., 1994 International Symposium on
Print_ISBN :
0-7803-1865-X
DOI :
10.1109/SIPNN.1994.344850
