Title :
Analysis of LSF switched-predictive vector quantisers
Author :
De Lamare, Rodrigo C. ; Alcaim, Abraham
Author_Institution :
CETUC, Pontificia Univ. Catolica do Rio de Janeiro, Brazil
Abstract :
Switched-predictive vector quantisation (SPVQ) has proven to be more efficient than conventional predictive vector quantisation (PVQ) to reduce the bit rate of LSF parameters in speech coding applications. We perform a comparison between different SPVQ schemes and we propose an extension of the SPVQ technique which outperforms previously reported PVQ and SPVQ systems. The proposed method consists of 4 vector quantisers (VQ) which are switched on the basis of the best performance criterion
Keywords :
linear predictive coding; speech coding; vector quantisation; LPC; LSF parameters; SPVQ; VQ; linear predictive coding; performance criterion; speech coding; switched-predictive vector quantisation; vector quantisers; Bit rate; Delay; Information filtering; Information filters; Linear predictive coding; Nonlinear filters; Signal processing; Signal processing algorithms; Speech coding; Vector quantization;
Conference_Titel :
Signal Processing and its Applications, Sixth International, Symposium on. 2001
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-6703-0
DOI :
10.1109/ISSPA.2001.950251
