Hearing aid signal-processing system

Details Hearing aid signal-processing system Hearing aid signal-processing system

1988-02-03

1989-07-25

Ng, Jin F.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 68, 381 71, 381 731, 381 94, H04R 2500, H04B 1500

Patent

active

048521752

ABSTRACT:
A signal processing system for hearing aids estimates the absolute quantity of noise in each of a plurality of frequency bands. The audio gains are adjusted so as to minimize the effect of upward spread of masking, wherein noise in lower frequency bands decreases the intelligibility of speech sounds in higher frequency bands. The noise level in each frequency band is estimated by monitoring the amplitude distribution of sound events in that frequency band.

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