HARMONIC NOISE WEIGHTING IN DIGITAL SPEECH CODERS

摘要

To address the need for choosing values of harmonic noise weighting (HNW) coefficient (.epsilon.p) so that the amount of harmonic noise weighting can be optimizex, a method and apparatus for performing harmonic noise weighting in digital spech coders is provided herein. During operation, received speech is analyzed (503) to determine a pitch period. HNW coefficients are then chosen (505) based on the pitch period, and a perceptual noise weighting filter (C(z)) is determined (507) based on the harmonic-noise weighting (HNW) coefficients (.epsilon.p).