Hearing aid with noise suppression, and operating method...

Details Hearing aid with noise suppression, and operating method... Hearing aid with noise suppression, and operating method...

2004-12-10

2009-08-11

Briney, III, Walter F (Department: 2614)

Electrical audio signal processing systems and devices

Hearing aids, electrical

Noise compensation circuit

C381S071100, C381S071600

Reexamination Certificate

active

07574012

ABSTRACT:
Concurrent signal paths going pass a hearing aid bring about interferences in the auditory canal. These interferences are compensated by estimating an interfering signal from the input signal disturbed by interference from a microphone and applying to the interfering signal a transfer function, with which the concurrent acoustic signal path is simulated, thereby forming an interfering output signal, and combining a usable output signal from a signal-processing device with the interfering output signal. In this way, a noise suppression by directional microphone switching configurations can be made possible when concurrent signal paths do not make such directional microphone switching possible by conventional approaches.

REFERENCES:
patent: 5402496 (1995-03-01), Soli et al.
patent: 6741707 (2004-05-01), Ray et al.
patent: 6829363 (2004-12-01), Sacha
patent: 198 13 512 (1999-06-01), None
patent: 1 304 902 (2003-04-01), None

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