Hearing aid having input AGC and output AGC

Details Hearing aid having input AGC and output AGC Hearing aid having input AGC and output AGC

1997-06-30

2000-04-11

Le, Huyen

Electrical audio signal processing systems and devices

Hearing aids, electrical

Wideband gain control

381312, 381121, H04R 2500

Patent

active

060496185

ABSTRACT:
A hearing aid has input AGC and output AGC using only one attack/release circuit and only one variable gain amplifier. An input AGC signal and an output AGC signal are summed and the summed signal, processed through the attack/release circuit, is used to control the gain of the variable gain amplifier.

REFERENCES:
patent: 4630302 (1986-12-01), Kryter
patent: 4952867 (1990-08-01), Anderson et al.
patent: 5144675 (1992-09-01), Killion et al.
patent: 5165017 (1992-11-01), Eddington et al.
patent: 5278912 (1994-01-01), Waldhauser
Clancy D A: "Highlighting Developments in Hearing Aids" Hearing Instruments vol. 46 No. 12, Dec. 1995, p. 18.

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