Title :
Efficient adaptive vector quantization of LPC parameters
Author :
Ferrer-Ballester, Miguel A. ; Figueiras-Vidal, Anfbal R.
Author_Institution :
ETSI Telecomunicacion, Univ. de Las Palmas, Spain
fDate :
7/1/1995 12:00:00 AM
Abstract :
This correspondence presents a new two-stage adaptive vector quantizer of LSF parameters in LPC speech coding. The first codebook is adapted by a partition-delete operation, whereas the code-vectors of the second codebook remain unchanged. The objective and subjective evaluations show that the proposed scheme offers transparent quantization with 22 b/frame
Keywords :
adaptive codes; linear predictive coding; speech coding; vector quantisation; LPC parameters; LSF parameters; code-vectors; codebook; efficient adaptive vector quantization; partition-delete operation; speech coding; Bit rate; Frequency measurement; Linear predictive coding; Proposals; Signal analysis; Speech analysis; Speech coding; Telecommunication standards; Vector quantization; Weight measurement;
Journal_Title :
Speech and Audio Processing, IEEE Transactions on
