A modified Itakura speech distortion measure based on auditory properties

A modified Itakura speech distortion measure is presented in this paper. Th is new modified Itakura speech distortion (called M-Itakura) has taken into account auditory properties of human beings. In the algorithm of the M-Ita kura measure, the speech signal is processed using results of psychoacousit ic measurements, which include critical band analysis, equal-loudness pre-e mphasis and intensity-loudness power law, and the short-time speech power s pectrum is converted to auditory perceptual spectrum. Preliminary experimen ts in comparison with the Itakura measure have been done. Simulation result s have shown an improvement of the M-Itakura measure over the conventional Itakura measure and the M-Itakura measure is more consistent with subjectiv e assessment of speech, quality. (C) 2001 Elsevier Science Ltd. All rights reserved.