Because classical fast vector quantization(VQ) algorithms can’t
be used in the LSF vector quantizers that use varying weighted
Euclidean distance, a novel fast VQ search algorithm —CRVQCS
(Constrained Range Vector Quantization based on
Component Searching) is presented in this paper. The CRVQ-CS
algorithm works well with the varying weighted Euclidean
distance and yields the same result as full search VQ with reduced
computational complexity does. Although the CRVQ-CS
algorithm is proposed for VQ using varying weighted Euclidean
distance measure, it is also suitable for VQ using simple
Euclidean distance measure.