Hearing and apparatus with compensation of acoustic and...

Electrical audio signal processing systems and devices – Hearing aids – electrical – Noise compensation circuit

Reexamination Certificate

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C381S312000, C381S317000, C381S083000, C381S093000, C381S096000

Reexamination Certificate

active

07844063

ABSTRACT:
Hearing aids with microphone and telephone coil are to be made simpler and more convenient. For this purpose it is provided to use an adaptive filter to compensate acoustic and electromagnetic feedback. In order to allow for the propagation delay differences, a delay element is connected downstream of the telephone coil. The microphone and telephone coil signals can be individually weighted with the factors a and b so that mixed mode is also possible.

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patent: 1406469 (2004-04-01), None

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