Patent ID: 9351086
Filing Date: 2016-05-24
CPC Classification: H04R

Claim Text:
1. A hearing aid device, comprising: a receiver configured to be arranged in the ear canal; a directional microphone comprising two microphones, termed a front and a rear microphone, respectively, or one microphone having two sound inlets, termed a front and a rear sound inlet, respectively; a feedback suppression system for counteracting acoustic feedback on the basis of sound signals detected by the directional microphone; an open fitting providing ventilation, wherein the two microphones or the two different sound inlets of the directional microphone are arranged in the ear canal at the same side of the receiver and sound is allowed to propagate between the microphones or between the inlets of the directional microphone and the receiver, the hearing aid device further comprises a mould or a housing provided with the front microphone and the rear microphone, the mould or housing being configured to be inserted into the ear canal in such a way that the receiver or the sound outlet of the receiver is arranged closer to the eardrum than the rear microphone or the rear sound inlet, and that the rear microphone or the rear sound inlet, is arranged between the receiver and the front microphone or the front sound inlet, and the microphones or sound inlets are spatially positioned relative to each other to provide that the acoustic feedback received at the rear microphone or the rear sound inlet exceeds the acoustic feedback received at the front microphone or the front sound inlet by at least 3 dB, when the hearing aid device is arranged in a normal ear canal.