Speech Signals's Analysis And Application Based On The Auditory Model Inversion

In this paper, on the basis of absorption of achievements of the research on auditory physiology,an auditory model simulationg the peripheral auditory system and part of the central auditory system is set up.The model is made of the fitlters presenting the characteristics of the basilar membrane for analyzing the voice signals,the half wave rectification modeling the inner hair cells and energy transfer of nerve fiber. With the auditory model as the front-end to extract the correlogram of signals.Following,this paper present the implementation of suditory model inversion procedure by resynthesizing original signal from the correlogra -m. this paper introduced that how resynthesize the neural firing rate by correlogram inversion,how resume the lost information by half wave rectification inversion.and a solution of speech enhancement based on masking properties of human auditory is proposed and implemented,we can not only analyse and resynthesize speech signal ,but also analyse and resynthesize speech signal in noisy entironment with the system.The result of experiments show that resynthesized speech signals form the its correlogram by auditory model inversion is nature and robust in noisy environment.