In-loop quantisation of reflection coefficients
Cheung-Fat Chan, K.W. Law · Electronics Letters · 1991
A method to quantise the reflection coefficients inside the computation loop of an LPC analysis for speech signals is proposed. Whereas traditional methods for LPC analysis quantise the reflection coefficients after a whole set of coefficients have been found, the proposed method takes into consideration the effect of quantisation error during the analysis procedure. For a given set of quantisation tables, the proposed method can achieve improvement on quantisation error over other scalar quantisation schemes.