摘要
目的:人工耳蜗是一种利用功能性电刺激为重度或全聋患者恢复或改善听力的一种电子装置。通过多通道仿真比较,证明不同的通道数对语音效果的影响。方法:本文利用人工耳蜗电刺激的简化模型,通过分析电听觉和人耳听觉的差异,在计算机上对连续相间采样方案进行了仿真及语音合成,并比较了不同通道数的CIS方案的语音识别率。结果:6或8通道的CIS语音编码方案获得的语音识别率较好。结论:经包络提取后较多通道数的CIS方案能获得较好的语音识别效果,对临床上参数的选择具有一定的意义。
Purpose： Cochlear implant is a sort of device which is used to restore normal hearing for the profoundly deaf by electrical stimulation of the auditory nerve. Simulation of multiple channels demonstrates that the number of channels has sig- nificant influence on sound effect. Method： This paper reviews the Continuous Interleaved Sampling （CIS） strategy for cochlear implants, and simulates it in PC. The audible sound of cochlear implanter is synthesized, and preliminary analysis of the speech identification rate of CIS strategy in different channels has also been done based on the simulation. Result： CIS strategy using 6 or 8 channels can achieve better sound effect .Conclusion： Simulation results show that CIS strategy with en- velope extraction and high number of channels can produce satisfactory speech synthesis effect.
出处
《中国医学物理学杂志》
CSCD
2010年第1期1659-1661,1680,共4页
Chinese Journal of Medical Physics
