Notes on the properties of a vector quantizer for LPC coefficients.

Vector quantization has been used in coding applications for several years. Recently quantization of LPC vectors has been used for speech coding and recognition. In these latter applications the only method that has been used for deriving the vector quantizer codebook from a set of training vectors, is the one described by Linde, Buzo and Gray. In this paper we compare this algorithm to several alternative and also study the properties of the resulting codebooks. Our conclusion is that the various algorithm that we tried gave essentially identical codebooks.