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Low-Complexity Wideband LSF Quantization Using Algebraic Trellis VQ

Abdellah KADDAI, Mohammed HALIMI

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Summary :

In this paper an algebraic trellis vector quantization (ATVQ) that introduces algebraic codebooks into trellis coded vector quantization (TCVQ) structure is presented. Low encoding complexity and minimum memory storage requirements are achieved using the proposed approach. It exploits advantages of both the TCVQ and the algebraic codebooks to know the delayed decision, the codebook widening, the low computational complexity and the no storage of codebook. This novel vector quantization scheme is used to encode the wideband speech line spectral frequencies (LSF) parameters. Experimental results on wideband speech have shown that ATVQ yields the same performance as the traditional split vector quantization (SVQ) and the TCVQ in terms of spectral distortion (SD). It can achieve a transparent quality at 47 bits/frame with a considerable reduction of memory storage and computation complexity when compared to SVQ and TCVQ.

Publication
IEICE TRANSACTIONS on Information Vol.E92-D No.12 pp.2478-2486
Publication Date
2009/12/01
Publicized
Online ISSN
1745-1361
DOI
10.1587/transinf.E92.D.2478
Type of Manuscript
PAPER
Category
Speech and Hearing

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