Patent ID: 9301059
Filing Date: 2016-03-29
CPC Classification: H04R

Claim Text:
1. Bone conduction hearing aid system, comprising: a right ear microphone arrangement adapted to be located at or close to a user's right ear, and a left ear microphone arrangement adapted to be located at or close to a user's left ear; a right ear signal processing unit for processing audio signals captured by the right ear microphone arrangement from ambient sound, and a left ear signal processing unit for processing audio signals captured by the left ear microphone arrangement from ambient sound; a right ear bone conduction output transducer adapted to be located at or close to the user's right ear for stimulating a user's right ear cochlea according to right ear output audio signals, and a left ear bone conduction output transducer adapted to be located at or close to the user's left ear for stimulating a user's left ear cochlea according to left ear output audio signals; a right ear cross-talk compensation filter unit for generating a right ear cross-talk compensation signal from processed audio signals of the right ear signal processing unit according to an estimated transcranial transfer function from the right ear bone conduction output transducer to the left ear cochlea, and a left ear cross-talk compensation filter unit for generating a left ear cross-talk compensation signal from processed audio signals of the left ear signal processing unit according to an estimated transcranial transfer function from the left ear bone conduction output transducer to the right ear cochlea; and means for subtracting the left ear cross-talk compensation signal from the processed audio signals of the right ear signal processing unit in order to generate the right ear output audio signals, and means for subtracting the right ear cross-talk compensation signal from the processed audio signals of the left ear signal processing unit in order to generate the left ear output audio signals.