1. A method for use in an implantable hearing instrument, comprising: receiving a microphone output signal from an implanted microphone implanted in a person; receiving an accelerometer output signal from an accelerometer; identifying a first characteristic of interest in at least one of said accelerometer output signal or said microphone output signal, and, upon the identification, adjusting a gain setting; amplifying said microphone output signal using said gain setting to produce an amplified signal; processing said amplified signal to generate a drive signal; and using said drive signal to drive an implanted auditory stimulation device implanted in the person to stimulate an auditory component, wherein the action of identifying the first characteristic of interest entails identifying a characteristic indicative of an own voice event as differentiated from a characteristic indicative of other types of body noise.