Method and an arrangement for damping a resonance frequency
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United States of America Patent
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Mar 27, 2012
Grant Date -
Nov 27, 2008
app pub date -
Sep 15, 2004
filing date -
Sep 19, 2003
priority date (Note) -
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Abstract
A method and an arrangement for damping the resonance frequency in a vibrator for bone anchored hearing aids in which sound information is mechanically transmitted via the skull bone directly to the inner ear of a person with impaired hearing. A microphone picks up the sound, a signal processor amplifies and filters the signal from the microphone and a vibrator converts the electrical signal into vibrations. The signal processor of the hearing aid is used for damping the resonance frequency peak of the vibrator. For this purpose the signal processor includes electronic filters that are arranged to reduce the amplification in the signal processing chain of the hearing aid as much as the desired dampening of the resonance frequency peak of the vibrator.
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