Variable rate vocoder

Details Variable rate vocoder Variable rate vocoder

G - Physics

10

L

G10L 19/00 (2006.01) G10L 19/04 (2006.01) G10L 21/00 (2006.01)

Patent

CA 2568984

A method and apparatus for scaling an output of a postfilter in a speech coding system. A sum of squares of a set of postfilter input samples are divided by a sum of squares of a set of postfilter output samples to get an inverse postfilter gain factor. A square root of the inverse postfilter gain factor is taken and smoothed. The output of the postfilter is smoothed by the smoothed inverse gain.

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