Patent ID: 7840020

Claim:
An implantable microphone, comprising: an implantable housing; a first diaphragm sealably positioned across a first recessed surface associated with said housing, wherein said first recessed surface and said first diaphragm collectively define a first chamber, and wherein said first diaphragm is operative to displace fluid within said first chamber in response to acoustic forces and acceleration forces impinging on said first diaphragm; a second diaphragm sealably positioned across a second recessed surface associated with said housing, said second diaphragm being substantially isolated from acoustic forces within said housing, wherein said second recessed surface and said second diaphragm collectively define a second chamber, and wherein said second diaphragm is operative to displace fluid in said second chamber in response to said acceleration forces acting on said second diaphragm; a conduit pneumatically connecting said first and second chambers, wherein said pneumatic connector is operative to pneumatically sum pressure fluctuations associated with said displaced fluids from said first and second chambers; and an electroacoustic transducer interconnected to said pneumatic connector, for detecting said pressure fluctuations in said pneumatic connector and generating an audio output signal in response thereto, said audio output signal being operative to actuate an actuator of a hearing instrument.