文章基本信息

标题：Implementation of a Speech Coding Strategy for Auditory Implants
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作者：Lamia Bouafif ; Kais Ouni ; Noureddine Ellouze 等
期刊名称：The International Arab Journal of Information Technology
印刷版ISSN：1683-3198
出版年度：2010
卷号：7
期号：4
出版社：Zarqa Private University
摘要：In this paper we present the conception and the implementation of a speech processing interface for cochlea prosthesis. This ‎module is based on a numerical speech processing algorithm which modelizes the infected ear and generates the stimulus ‎signals for the cilia cells (brain). This interface uses a gammachirp filter bank constituted of 16 band pass filters based on IIR ‎filters. The central frequencies and ERB bands are computed with Glasberg and Moore models; however stimulus signals are ‎selected after a spectral energy analysis of each channel. The energy and the amplitude of the selected BFG filter bank outputs ‎are quantized and transmitted to the cochlea electrodes. To validate our work, we tested it on vowels, consonants then on ‎several words pronounced by different speakers. The results demonstrated a degree of discrimination and interferences ‎between different sounds especially in multi speaker environment.
关键词：Cochlea prosthesis; stimulus; gammatone filter; gammachirp; and speech coding.‎