Incorporating error shaping technique into LSF vector quantization.

This paper presents an error shaping technique for line spectrum frequency (LSF) vector quantization. The error shaping technique based on the weighted logarithm spectral distortion (WLSD) measure can be used for shaping the spectral distortion distribution of quantization error into any different c...

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Publicat a:	IEEE Transactions on speech and audio processing 9, 2 (2001).
Autor principal:	Hsi-Wen Nein
Format:	Article
Idioma:	English
Matèries:	CELP coder. LPC model. LSF VQ. LSF parameters. LSF vector quantization. WLSD measure. Computational complexity. Frequency bandwidth. Human perception. Human-sensitivity frequency band. Line spectrum frequency. Optimal WMSE weights. Optimal error shaping. Quadratically weighted measure. Quantization error. Spectral distortion distribution. Speech coding algorithm. Speech quality. Weighted logarithm spectral distortion. Weighted mean squared error. Weighting function.