Title :
Interpolation-based differential vector coding of speech LSF parameters
Author :
Da Silva, Lúucia Martins ; Alcaim, Abraham
Author_Institution :
CETUC, Rio de Janeiro, Brazil
Abstract :
This paper presents a new strategy to encode the LPC spectral envelope of speech. The proposed scheme uses an interpolation-based differential vector coding of the LSF parameters in order to better track the temporal variations of the speech short-time spectral envelope. Two consecutive sets of LSF parameters are simultaneously encoded during each speech frame. Simulation results show major improvements over techniques that vector quantize a single set of LSF parameters per frame
Keywords :
interpolation; linear predictive coding; parameter estimation; spectral analysis; speech coding; speech processing; vector quantisation; LPC spectral envelope; VQ; interpolation based differential vector coding; simulation results; speech LSF parameters; speech coding; speech frame; speech short-time spectral envelope; temporal variations tracking; Bit rate; Information filtering; Information filters; Interpolation; Linear predictive coding; Nonlinear filters; Predictive models; Quantization; Speech analysis; Speech coding;
Conference_Titel :
Global Telecommunications Conference, 1996. GLOBECOM '96. 'Communications: The Key to Global Prosperity
Conference_Location :
London
Print_ISBN :
0-7803-3336-5
DOI :
10.1109/GLOCOM.1996.591994
