Title :
An analog bionic ear processor with zero-crossing detection
Author :
Sarpeshkar, Rahul ; Baker, Michael W. ; Salthouse, Christopher D. ; Sit, Ji-Jon ; Turicchia, Lorenzo ; Zhak, Serhii M.
Author_Institution :
Massachusetts Inst. of Technol., Cambridge, MA, USA
Abstract :
A 75 dB 251 μW analog speech processor is described that preserves the performance, robustness, and programmability needed for deaf patients at a reduced power consumption compared to that of implementations with A/D and DSP. It also provides zero-crossing outputs for stimulation strategies that use phase information to improve performance.
Keywords :
BiCMOS analogue integrated circuits; automatic gain control; ear; hearing aids; prosthetics; speech processing; 251 muW; 75 dB; AGC circuit; BiCMOS; analog bionic ear processor; analog speech processor; cochlear implant processing; cochlear stimulation phase information; deaf patients; zero-crossing detection; zero-crossing outputs; Band pass filters; Batteries; Circuits; Cochlear implants; Deafness; Digital signal processing; Ear; Electrodes; Microphones; Sampling methods;
Conference_Titel :
Solid-State Circuits Conference, 2005. Digest of Technical Papers. ISSCC. 2005 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8904-2
DOI :
10.1109/ISSCC.2005.1493877
