Open Access

Multiple-Description Multistage Vector Quantization

EURASIP Journal on Audio, Speech, and Music Processing20072007:067146

DOI: 10.1155/2007/67146

Received: 19 May 2007

Accepted: 31 October 2007

Published: 3 December 2007


Multistage vector quantization (MSVQ) is a technique for low complexity implementation of high-dimensional quantizers, which has found applications within speech, audio, and image coding. In this paper, a multiple-description MSVQ (MD-MSVQ) targeted for communication over packet-loss channels is proposed and investigated. An MD-MSVQ can be viewed as a generalization of a previously reported interleaving-based transmission scheme for multistage quantizers. An algorithm for optimizing the codebooks of an MD-MSVQ for a given packet-loss probability is suggested, and a practical example involving quantization of speech line spectral frequency (LSF) vectors is presented to demonstrate the potential advantage of MD-MSVQ over interleaving-based MSVQ as well as traditional MSVQ based on error concealment at the receiver.


Authors’ Affiliations

Department of Electrical and Computer Engineering, University of Manitoba


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© Pradeepa Yahampath. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.