Title :
Equivalent distortion measures for quantisation of LPC model
Author :
Erkelens, J.S. ; Broersen, P.M.T.
Author_Institution :
Dept. of Appl. Phys., Delft Univ. of Technol., Netherlands
fDate :
8/17/1995 12:00:00 AM
Abstract :
The authors show that for small errors in an LPC model, spectral distortion and weighted squared distortion measures in the coefficients of arbitrary one-to-one transformations of the LPC parameters are equivalent. For line spectrum pairs and immittance spectrum pairs, the weighting matrix is diagonal, which is advantageous for efficient quantisation
Keywords :
covariance matrices; linear predictive coding; speech coding; vector quantisation; LPC model; diagonal weighting matrix; equivalent distortion measures; immittance spectrum pairs; line spectrum pairs; quantisation; spectral distortion; speech spectrum; weighted squared distortion measures;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19950988