Active vibration attenuation for implantable microphone

A method for use in an implantable hearing system for generating a system model to match an output response of a motion sensor to at least a portion of an output response of an implanted microphone, comprising:

• measuring, in response to a common stimulation, first and second output responses of an implanted microphone and a motion sensor, respectively;
• generating a relationship model of said first and second output responses;
• and
• implementing said relationship model as a filter to adjust subsequent output responses of one of said implanted microphone and said motion sensor.

A method for use in an implantable hearing system for matching an output response of a motion sensor to at least a portion of an output response of an implanted microphone, comprising:

• measuring first and second outputs of an implanted microphone and a motion sensor, respectively, in response to the operation of an implanted auditory stimulation device;
• using said first and second outputs to generate a digital filter indicative of a relationship of frequency responses of the implanted microphone and the motion sensor;
• and
• implementing said digital filter to filter subsequent outputs of said motion sensor to produce filtered outputs.

An implantable hearing system operative to match an output response of a motion sensor to at least a portion of an output response of an implanted microphone for noise cancellation purposes, comprising:

• a microphone adapted for subcutaneous positioning and being operative to receive signals including motion and acoustic components and generate microphone output responses;
• a motion sensor operative to receive signals including motion components and generate a motion sensor output responses;
• a digital filter adapted to utilize a ratio of said microphone output responses and said motion sensor output responses to generate a transfer function, wherein said digital filter is operative to apply said transfer function to said motion sensor output responses to produce filtered motion sensor output responses;
• and
• a summation device for combining said filtered motion sensor output responses and said microphone output responses and generating a net output response,
• an implantable auditory stimulation device operative to stimulate an auditory component of a patient in accordance with said net output response.