Title :
A computer-controlled digital master hearing aid
Author :
Nielsen, Lars B.
Author_Institution :
House Ear Inst., Los Angeles, CA, USA
Abstract :
The design and implementation of a computer-controlled digital master hearing aid (DMHA) have provided a flexible and versatile tool for research in speech processing algorithms to benefit the hearing-impaired. The system includes an IBM PC, programmable antialiasing and reconstruction filters, a digital signal processing board using the TMS320C25 chip, and programmable attenuators and switches. The system was used successfully in a recent study, providing high flexibility, precise fitting of the hearing aid to any hearing loss, and a wide dynamic range. The system can be used to implement and evaluate new algorithms such as enhancement of speech in noise and speech feature extraction. The hardware, software, and FIR filter design are described
Keywords :
computerised control; computerised instrumentation; hearing aids; medical computing; microcomputer applications; IBM PC; TMS320C25 chip; digital signal processing board; hearing loss; noisy speech enhancement; programmable antialiasing filter; programmable attenuators; programmable reconstruction filter; speech feature extraction; speech processing algorithms; Algorithm design and analysis; Attenuators; Auditory system; Digital filters; Digital signal processing chips; Finite impulse response filter; Signal processing algorithms; Speech analysis; Speech enhancement; Speech processing;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.96093
