Title :
A multi-mode and multi-channel cochlear implant
Author :
Zhang, Chung ; Wang, ZhiHua ; Li, DongMei ; Dong, Miang
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
fDate :
31 Aug.-4 Sept. 2004
Abstract :
A multi-channel cochlear implant that can provide 16 channels of stimulation is presented in this paper. The speech processor is realized to run multiple speech process algorithms. A mixed analog and digital ASIC with 16 channels is designed, which supports 4 stimulus modes and provides a highest stimulus rate of 15k pulses per second per channel, and dynamic range of 60 dB with the 10 bit D/A converter. CIS speech process algorithm is introduced in the paper and fast filter bank implementation algorithm is studied to reduce the computation complexity.
Keywords :
channel bank filters; computational complexity; digital-analogue conversion; ear; mixed analogue-digital integrated circuits; prosthetics; speech processing; D/A converter; computational complexity; fast filter bank implementation algorithm; mixed analog and digital ASIC; multichannel cochlear implant; multiple speech process algorithm; Analog-digital conversion; Application specific integrated circuits; Cochlear implants; Computational Intelligence Society; Dynamic range; Electrodes; Frequency; Signal processing algorithms; Speech analysis; Speech processing;
Conference_Titel :
Signal Processing, 2004. Proceedings. ICSP '04. 2004 7th International Conference on
Print_ISBN :
0-7803-8406-7
DOI :
10.1109/ICOSP.2004.1442224
