Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent
1992-07-09
1993-11-02
Ng, Jin F.
Electrical audio signal processing systems and devices
Sound effects
Reverberators
381 682, 381 684, 381 71, 381 83, H04R 2500, H04R 2700
Patent
active
052590330
ABSTRACT:
A hearing aid includes a filter in an electrical feedback path, the characteristics of which filter are calculated to model acoustic coupling between the receiver and microphone of the aid. A limiter is inserted in the main electrical pathway between the microphone and the receiver to provide stability in the presence of sudden sound bursts. A noise signal is injected continuously into the electrical circuit and is used to adapt the characteristics of the filter to accommodate changes in the acoustic coupling. The level of the noise signal can be varied to match changes in residual signal level to maintain signal to noise ratio and to optimize rate of adaption commensurate with satisfactory hearing function while the noise itself is unobtrusive to the user.
REFERENCES:
patent: 3920931 (1975-11-01), Panick, Jr.
patent: 4025721 (1977-05-01), Graupe et al.
patent: 4052571 (1977-10-01), Gregory et al.
patent: 4061875 (1977-12-01), Freifeld et al.
patent: 4088835 (1978-05-01), Thurmond et al.
patent: 4185168 (1980-01-01), Graupe et al.
patent: 4232192 (1980-11-01), Beex
patent: 4396806 (1983-08-01), Anderson
patent: 4405831 (1983-12-01), Michelson
patent: 4423289 (1983-12-01), Swinbanks
patent: 4473906 (1984-09-01), Warnaka et al.
patent: 4589133 (1986-05-01), Swinbanks
patent: 4596033 (1986-06-01), Swinbanks
patent: 4600815 (1986-07-01), Horna
patent: 4602337 (1986-07-01), Cox
patent: 4636586 (1987-01-01), Schiff
patent: 4661981 (1987-04-01), Henrickson et al.
patent: 4669122 (1981-05-01), Swinbanks
patent: 4670903 (1987-06-01), Araseki et al.
patent: 4689821 (1987-08-01), Salikuddin et al.
patent: 4764957 (1988-08-01), Angoline et al.
patent: 4783818 (1980-11-01), Graupe et al.
patent: 4791672 (1988-12-01), Nunley et al.
patent: 4802228 (1989-01-01), Silverstein et al.
patent: 4845757 (1989-07-01), Wagner
patent: 5016280 (1991-05-01), Engebretson et al.
patent: 5046102 (1991-09-01), Zwicker et al.
"Measurement and adaptive suppression of acoustic feedback in hearing aids", by D. K. Bustamante et al, ICASSP, Glasgow, Scotland, May 23-26, 1989, pp. 2017-2020.
Goodings Rupert L. A.
Hansen Roy S.
Senensieb Gideon A.
Wilson Philip H.
Chan Jason
GN Danavox AS
Goldberg Richard M.
Ng Jin F.
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