基于听觉特性的电子耳蜗语音编码策略
发布时间：2018-09-12 14:20
【摘要】：为了改善电子耳蜗语音编码策略的性能,提出了一种基于听觉特性的编码策略.策略中的带通滤波及包络检测阶段采用Gammatone滤波器模型和Meddis内毛细胞模型;在通道选择阶段引入心理声学的掩蔽效应模型,从M个通道中选出N个通道,在相应的通道产生脉冲刺激信号.用MATLAB对提出的策略进行仿真研究,实现了22选8的编码策略.结果表明,所提编码策略在稳定性和鲁棒性方面优于CIS和ACE编码策略.
[Abstract]:In order to improve the performance of cochlear speech coding strategy, a coding strategy based on auditory characteristics is proposed. Gammatone filter model and Meddis inner hair cell model are used in the band-pass filtering and envelope detection phase of the strategy. Psychoacoustic masking effect model is introduced in the channel selection phase to select N channels from M channels. Pulse stimulus signals are generated in the corresponding channel. The proposed strategy is simulated by MATLAB, and the coding strategy of 22 choices 8 is realized. The results show that the proposed coding strategy is superior to CIS and ACE in terms of stability and robustness.
【作者单位】： 东北大学信息科学与工程学院;
【基金】：国家自然科学基金资助项目(60970157) 中央高校基本科研业务费青年教师科研启动基金资助项目(N100304008)
【分类号】：TN912.3
本文编号：2239292
[Abstract]:In order to improve the performance of cochlear speech coding strategy, a coding strategy based on auditory characteristics is proposed. Gammatone filter model and Meddis inner hair cell model are used in the band-pass filtering and envelope detection phase of the strategy. Psychoacoustic masking effect model is introduced in the channel selection phase to select N channels from M channels. Pulse stimulus signals are generated in the corresponding channel. The proposed strategy is simulated by MATLAB, and the coding strategy of 22 choices 8 is realized. The results show that the proposed coding strategy is superior to CIS and ACE in terms of stability and robustness.
【作者单位】： 东北大学信息科学与工程学院;
【基金】：国家自然科学基金资助项目(60970157) 中央高校基本科研业务费青年教师科研启动基金资助项目(N100304008)
【分类号】：TN912.3
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