Hearing aid suitable for use under noisy circumstance

Details Hearing aid suitable for use under noisy circumstance Hearing aid suitable for use under noisy circumstance

1980-10-03

1983-10-11

Stellar, George G.

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Adjacent ear

179107R, H04R 2500

Patent

active

044094353

ABSTRACT:
A hearing aid in which input signals picked up through a microphone are divided to those of two or more frequency bands by means of a frequency division means, signal outputs of frequency band(s) in which noise signals are included are saturated or reduced by a compensating means such as compression or saturation amplifier, and mixed with signals of other signal of frequency band(s) which are not compensated, whereby ambient noises can be removed from voice sounds.

REFERENCES:
patent: 3803357 (1974-04-01), Sacks
patent: 4025723 (1977-05-01), Backledge
patent: 4099035 (1978-07-01), Yanick
Scand Audiol 8: 121-126, 1979, No. 2, Programmable Hearing Aid with Multichannel Compression, S. Mangold et al.

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