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Title

A new general distance measure for quantization of LSF and their transformed coefficients

Author(s)

Vu, Hai Le;  Lois, Laszlo

Abstract

In this paper, we have developed a new general distance measure that not only can be used in a vector quantization (VQ) of the line spectrum frequency (LSF) parameters but performs well in the LSF transformed domain. The new distance is based on the spectral sensitivity of LSF and their transformed coefficients. In addition, the fix scaling factor is used to decrease the sensitivity of spectral error at higher frequencies. Experimental results have shown that the proposed distance measure leads to as good as or better performance of VQ compared to other methods in the field of LSF coding. The use of this distance as the weighting function of the LSF's transformed parameters is also suggested.

Publication type

Conference paper

Source

Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Seattle, Washington, United States, 12-15 May 1998, Vol. 1, p. 45-48

Publication year

1998

Keyword(s)

Algorithms;  Error analysis;  Experimental results;  Fixed scaling factor;  Frequencies;  General distance measure;  Line spectrum frequency parameters;  LSF;  Mathematical transformations;  Matrix algebra;  Sensitivity analysis;  Signal distortion;  Spectral analysis;  Spectral error;  Spectral sensitivity;  Speech coding;  Transform coding;  Transformed coefficients;  Transformed parameters;  Vector quantisation;  VQ;  Weighted squared Euclidean distance;  Weighting function

Publisher

IEEE

ISBN

0780344286

Publisher URL

http://dx.doi.org/10.1109/ICASSP.1998.674363

Copyright

Copyright © 1998 IEEE. Paper reproduced here in accordance with the copyright policy of the publisher. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Full text

Peer reviewed