Antihowling hearing aid

Details Antihowling hearing aid Antihowling hearing aid

1989-10-05

1991-03-26

Ng, Jin F.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 68, 381 93, 381 95, H04R 2500, H04R 302

Patent

active

050036068

ABSTRACT:
In order to prevent howling in a hearing aid (10) having a microphone (1), an amplifier (3) and a receiver (4) the hearing aid is provided with a second microphone (2) which is only sensitive to sound near to it. The microphones (1, 2) are connected to the amplifier (3) in anti-phase relative to each other.

REFERENCES:
patent: 3922488 (1975-11-01), Gabr
patent: 4109116 (1978-08-01), Victoreen
patent: 4442323 (1984-04-01), Yoshida et al.

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