Method and system for line spectral frequency vector...

Details Method and system for line spectral frequency vector... Method and system for line spectral frequency vector...

G - Physics

10

L

G10L 19/12 (2006.01) G10L 19/06 (2006.01)

Patent

CA 2443443

A method and system for quantizing LSF vectors in a speech coder, wherein predicted LSF values based on previously decoded output values are used to estimate spectral distortion, along with the residual codebook vectors and the LSF coefficients. The method comprises the steps of obtaining a plurality of quantized LSF coefficients from the respective predicted LSF values (28), and the residual codebook vectors; rearranging the quantized LSF coefficients in the frequency domain in an orderly fashion (40); obtaining the spectral distortion from the rearranged quantized LSF coefficients and the respective LSF coefficients (42); and an optimal code vector is selected based on the spectral distortion (44).

L'invention porte sur un procédé et un système de quantification de vecteurs LSF dans un codeur vocal, les valeurs LSF prévues d'après les valeurs de sortie décodées auparavant sont utilisées afin d'estimer la distorsion spectrale, aux côtés des vecteurs du livre de codes restants et des coefficients LSF. Le procédé consiste à obtenir une pluralité de coefficients LSF quantifiés à partir de valeurs LSF prévues respectives et des vecteurs du livre de codes restants ; à redisposer les coefficients LSF quantifiés dans le domaine de fréquence dans l'ordre ; à obtenir la distorsion spectrale à partir des coefficients LSF quantifiés redisposés et des coefficients LSF respectifs ; puis à sélectionner un vecteur de code optimal d'après la distorsion spectrale.

Affiliated with

Also associated with

Rating

Method and system for line spectral frequency vector... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for line spectral frequency vector..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for line spectral frequency vector... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1399331