Hearing aid with adjustable frequency response

Details Hearing aid with adjustable frequency response Hearing aid with adjustable frequency response

1986-10-14

1991-09-03

Ng, Jin F.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 68, 381 684, H04R 2500

Patent

active

050461028

ABSTRACT:
A hearing aid has a sound-receiving microphone from which an incoming signal is supplied to a number of different channels, each channel being allocated to a different frequency range within a total expected range of frequencies for the incoming signal. Each channel includes a circuit for measuring the strength of the signal within the frequency range for that channel and for changing the respective strengths of the signals in the other channels by suppressing weak signal channels in favor of strong signal channels.

REFERENCES:
patent: 3928733 (1975-12-01), Hueber
patent: 4119814 (1978-10-01), Harless
patent: 4419544 (1983-12-01), Adelman
patent: 4441202 (1984-04-01), Tong et al.
patent: 4454609 (1984-06-01), Kates
patent: 4475230 (1984-10-01), Fukuyama et al.
patent: 4596902 (1986-06-01), Gilman
"Uber Ein Einfaches Funktionsschema Des Gehors", von E. Zwicker, Acustica, vol. 12 (1962), pp. 22-28.
"Beitrag zur automatischen Erkennung gesprochener Ziffern", Terhardt, Kybernetic, vol. 3, No. 3, Sep. 1966, pp. 136-143.
PCT WO83/02212 Bisgaard, Peter et al., "Method and Apparatus for Adapting the Transfer Function in a Hearing Aid", Jun. 23, 1983.

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