Electrical audio signal processing systems and devices – Hearing aids – electrical
Reexamination Certificate
2007-01-17
2011-11-08
Le, Huyen D. (Department: 2614)
Electrical audio signal processing systems and devices
Hearing aids, electrical
C381S321000, C381S094100
Reexamination Certificate
active
08055000
ABSTRACT:
A multichannel hearing aid (20) comprises at least one frequency channel having a compressor (38) with a compression threshold at an output level below the hearing threshold and an attack time above 0.5 seconds whereby hearing of a sudden sound in a stationary sound environment is facilitated. With this compressor, the amplification of low signal levels may be increased compared to the prior art, as the compressor kicks in to generally suppress steady noises. The gain may generally be increased as high as feasible in view of the microphone baseline noise, which should preferably be kept below the hearing threshold. Thus the user of the hearing aid will generally have the option of a higher gain of low level sounds than generally feasible with prior art hearing aids.
REFERENCES:
patent: 4204260 (1980-05-01), Nysen
patent: 4531229 (1985-07-01), Coulter
patent: 4630302 (1986-12-01), Kryter
patent: 4718099 (1988-01-01), Hotvet
patent: 4813417 (1989-03-01), Soli et al.
patent: 5144675 (1992-09-01), Killion et al.
patent: 5165017 (1992-11-01), Eddington et al.
patent: 5271397 (1993-12-01), Seligman et al.
patent: 5402498 (1995-03-01), Waller, Jr.
patent: 5483617 (1996-01-01), Patterson et al.
patent: 5687241 (1997-11-01), Ludvigsen
patent: 5832097 (1998-11-01), Armstrong et al.
patent: 6285767 (2001-09-01), Klayman
patent: 6879692 (2005-04-01), Nielsen et al.
patent: 7031484 (2006-04-01), Ludvigsen
patent: 7181031 (2007-02-01), Ludvigsen
patent: 42 28 934 (1993-01-01), None
patent: 0 732 036 (1997-05-01), None
patent: 2 192 511 (1988-01-01), None
patent: WO 96/35314 (1996-11-01), None
patent: WO 97/11572 (1997-03-01), None
patent: 99/34642 (1999-07-01), None
Brian C.J. Moore et al., “A comparison of four methods of implementing automatic gain control (AGC) in hearing aids”, British Journal of Audiology, 1998, pp. 93-104.
“Appareils de correction auditive” (Hearing aids Part 2: Hearing Aids with automatic gain control circuits): Commission Electotechnique Internationale Norme De La Cei, 1983.
Le Huyen D.
Sughrue & Mion, PLLC
Widex A/S
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