Electrical audio signal processing systems and devices – Hearing aids – electrical – Noise compensation circuit
Reexamination Certificate
2005-05-24
2005-05-24
Kuntz, Curtis (Department: 2643)
Electrical audio signal processing systems and devices
Hearing aids, electrical
Noise compensation circuit
C381S321000, C381S071110
Reexamination Certificate
active
06898293
ABSTRACT:
The present invention relates to a hearing aid with an adaptive filter for suppression of acoustic feedback in the hearing aid. The hearing aid further comprises a controller that is adapted to compensate for acoustic feedback by determination of a first parameter of an acoustic feedback loop of the hearing aid and adjustment of a second parameter of the hearing aid in response to the first parameter whereby generation of undesired sounds is substantially avoided. Hereby a gain safety margin requirement is significantly reduced.
REFERENCES:
patent: 5016280 (1991-05-01), Engebretson et al.
patent: 5402496 (1995-03-01), Soli et al.
patent: 5500902 (1996-03-01), Stockham, Jr. et al.
patent: 5719580 (1998-02-01), Core
patent: 6078612 (2000-06-01), Bertrand et al.
patent: 6173058 (2001-01-01), Takada
patent: 6219427 (2001-04-01), Kates et al.
patent: 6480610 (2002-11-01), Fang et al.
patent: 198 02 568 (1999-08-01), None
patent: 0814639 (1997-12-01), None
patent: WO 9847313 (1998-10-01), None
patent: WO 9856210 (1998-12-01), None
Lunner et al., “A Digital Filterbank Hearing Aid Design, Implementation and Evaluation” International Conference on Acoustics, Speech & Signal Processing, ICASSP, US, New York, IEEE, vol. CONF. 16, May 14, 1991, pp. 3661-3664.
M. Karjalainen et al, “Comparison of Loudspeaker Equalization Methods Based on DSP Techniques”, Journal of the Audio Engineering Society, Audio Engineering Society, New York, US, vol. 47, No 1/2 Jan. 1999, pp. 14-30, XP000823370.
A. Harma, “Implementation of frequency-warped recursive filters”, Signal Processing, Amsterdam, NL, vol. 80, No. 3, Mar. 2000, pp. 543-548, XP004188172.
Ensey Brian
Kuntz Curtis
Topholm & Westermann ApS
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