| 基于TMS320VC5502的电子耳蜗CIS算法实现 |
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| 引用本文： | 吕燚,李平,孟丽,吴文焘.基于TMS320VC5502的电子耳蜗CIS算法实现[J].现代电子技术,2012,35(15):66-69. |
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| 作者姓名： | 吕燚 李平 孟丽 吴文焘 |
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| 作者单位： | 1. 中国科学院声学研究所,北京100190;中国科学院研究生院,北京100080
2. 中国科学院声学研究所,北京,100190 |
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| 基金项目： | 中国科学院知识创新工程主要方向资助项目(KGCX2-YW-915) |
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| 摘 要： | 针对电子耳蜗连续交替采样算法（CIS）实现中面临的所需刺激速率高、要求参数调整灵活等问题,提出了一种基于FFT的CIS算法实现方法,设计了一套基于TMS320VC5502的电子耳蜗体外处理器的硬件系统。利用单频信号和实际语音对系统进行了验证,结果表明系统高效地实现了CIS算法,刺激速率达到了8 000次以上,满足电子耳蜗的要求。因此该设计系统有着高灵活性、高实时性和低功耗等特点,对电子耳蜗的研究和工程实现具有一定的指导意义。
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| 关 键 词： | 电子耳蜗 连续交替采样 快速傅里叶变换 TMS320VC5502 |
Implementation of CIS algorithm for TMS320VC5502-based cochlear implant |
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| L Yi
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LI Ping
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MENG Li
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WU Wen-tao.Implementation of CIS algorithm for TMS320VC5502-based cochlear implant[J].Modern Electronic Technique,2012,35(15):66-69. |
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| Authors: | L Yi LI Ping MENG Li WU Wen-tao |
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| Institution: | 1(1.Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China; 2.Graduate School,Chinese Academy of Sciences,Beijing 100080,China) |
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| Abstract: | In order to meet the needs of high stimulation rate and flexible parameter adjustment in CIS(Continuous Interleaved Sampling) algorithm implementation of cochlear impant,a method for implementation of FFT-based CIS algorithm is proposed and a set of hardware system in TMS320VC5502-based cochlear impant is designed in this paper.The system is tested by single-frequency signal and practical voice signal.The experimental results show that the system realizes CIS algorithm efficiently,and the stimulation rate reaches more than 8 000 pulse per second,which meets the cochlear implants′ demand.As a result,the proposed system has the advantages of higher flexibility,better real-time performance,and lower power consumption,which provides a reference for the further study on cochlear impants and their engineering realization. |
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| Keywords: | cochlear implant continuous interleaved sampling FFT TMS320VC5502 |
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