Patent ID: 6491644
Filing Date: 2002-12-10
Classification: H04R

Abstract:
An implantable sound receptor for hearing aids, comprising:a sound sensor designed as an optical sensor for vibration and distance measurements, said sensor mountable within an ear at a distance from a surface of a sound transmission part sensible to acoustic vibrations, the optical sensor being arranged at a distance from a scanned part that is larger than a maximum dislocation of the scanned part occurring in a direction of a front face of the sensor, and is adjustably retained at a collision-preventing distance; an electronic evaluation circuit connected with said optical sensor in order to generate signals for electromechanical vibration generators, and/or for stimulation of the organ of Corti and/or the auditory nerves, and/or the brain stem, said evaluation circuit including connections for respective signal lines; and a stabilizing circuit cooperating with said evaluation circuit to compensate for a shift of an operating point of an interferometer by low-frequency vibrations of the scanned part.