An implanted microphone is provided that has reduced sensitivity to
vibration and attendant acceleration forces. In this regard, the
microphone differentiates between the desirable and undesirable
components of a transcutaneously received signal. More specifically, the
present invention utilizes an output that is indicative of acceleration
forces acting on the implanted microphone (e.g., an acceleration signal)
to counteract and/or cancel the effects of acceleration induced pressures
in an output signal of a microphone diaphragm. This may be done in a
variety of ways, including but not limited to, pneumatically,
mechanically, electrical analog, or digitally, or combinations thereof.
In one arrangement, the generated output may be filtered to match the an
acceleration response of the output signal of the microphone diaphragm
such that upon removal of the motion signal from the microphone output,
the remaining signal is an acoustic signal.