4th International Conference on Spoken Language Processing

Philadelphia, PA, USA
October 3-6, 1996

Simple Fast Vector Quantization of the Line Spectral Frequencies

Jin Zhou (1), Yair Shoham (1), Ali Akansu (2)

(1) Bell Laboratories, Lucent Technologies, Murray Hill, NJ, USA
(2) Electrical Engineering Department, New Jersey Institute of Technology, Newark, NJ, USA

In this paper we propose a simple fast-search VQ of the LSF’s to be used on top of the split VQ, that is, in each of the sub-vector domains. The main trait of the proposed method is that no suboptimal codebooks are used and there is no further reduction in performance. In each sub-vector domain, a full-size optimally trained codebook, typically of size 1024, is searched using a fast-search algorithm. The result of this search is identical to that of a full-search, yet, only about 25% of a full-search complexity is needed.

Full Paper

Bibliographic reference.  Zhou, Jin / Shoham, Yair / Akansu, Ali (1996): "Simple fast vector quantization of the line spectral frequencies", In ICSLP-1996, 945-948.