An implantable microphone, comprising a rigid housing, a sensor membrane for exposure to surrounding soft tissue, the sensor membrane being arranged to seal an opening of the housing, a transducer for generating an output signal corresponding to the deflection of the sensor membrane, and a compliant suspension arrangement located opposite to the sensor membrane for being exposed to soft tissue and for supporting the housing on soft tissue in a manner that the housing is moveable relative to said soft tissue upon acceleration of the housing and the soft tissue, the suspension arrangement comprising means for adjusting the spring constant of the suspension arrangement when the microphone is implanted.
