A New General Distance Measure for Quantization of Lsf and Their Transformed Coefficients
نویسنده
چکیده
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 perforines well in the LSF traiisfornied 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 perfoinance of VQ compared to other methods in the field of LSF coding. The use of this distance as the weighting function of the LSFs' transformed parameters is also suggested.
منابع مشابه
A new general distance measure for quantization of LSF and their transformed coefficients
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 performes well in the LSF transformed domain. The new distance is based on the spectral sensitivity of LSF and their transformed coe cients. In addition, the x scaling factor is used to decrease the sensitivity of spectral er...
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