Interpolation-based differential vector coding of speech LSF parameters

Author

Da Silva, Lúucia Martins ; Alcaim, Abraham

Author_Institution

CETUC, Rio de Janeiro, Brazil

Volume

3

fYear

1996

fDate

18-22 Nov 1996

Firstpage

2049

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1996. GLOBECOM '96. 'Communications: The Key to Global Prosperity

Conference_Location

London

Print_ISBN

0-7803-3336-5

Type

conf

DOI

10.1109/GLOCOM.1996.591994

Filename

591994