An implantable microphone for use in hearing systems includes a housing having a back wall. The back wall has a recess (e.g., blind hole) configured to be coupled to an auditory ossicle. The implantable microphone also includes a membrane coupled to a top portion of the housing and a vibration sensor adjacent to the membrane. The membrane is configured to move in response to movement from the auditory ossicle, and the vibration sensor is configured to measure the movement of the membrane and to convert the measurement into an electrical signal.