DocumentCode :
2630725
Title :
Self adaptive filtering of noise from speech: a hearing aid application
Author :
Graupe, D. ; Basseas, S.P. ; Grosspietsch, J.K.
Author_Institution :
Dept. Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA
fYear :
1988
fDate :
7-9 June 1988
Firstpage :
2619
Abstract :
The authors discuss and evaluate a self-adaptive filter of noise from speech. The filter uses a single microphone, and incorporates time-series identification algorithms with artificial intelligence decision procedures to discriminate between environmental noises, including babble from speech. The filter has recently been realized in a single CMOS microchip that includes digital, analog, and ADC circuits and is presently being used by seven hearing-aid manufacturers in their otherwise conventional hearing aids, of both the behind-ear and inside-ear types. Circuit and system design considerations are discussed and performance evaluation is presented, as is the relative performance as compared with conventional nonadaptive single microphone designs based on automatic gain control and ASP-type compression circuits.<>
Keywords :
CMOS integrated circuits; adaptive filters; handicapped aids; speech analysis and processing; ADC circuits; CMOS microchip; artificial intelligence decision procedures; handicapped aid; hearing aid; self-adaptive filter; speech processing; time-series identification algorithms; Adaptive filters; Artificial intelligence; Auditory system; CMOS digital integrated circuits; Circuit noise; Digital filters; Microphones; Speech analysis; Speech enhancement; Working environment noise;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
Type :
conf
DOI :
10.1109/ISCAS.1988.15479
Filename :
15479
Link To Document :
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