Patent ID: 7450731

Claim:
A hearing aid device, comprising: a housing for accommodating the hearing aid device; a directional microphone device for acquiring sound signals; a transmission device for electrically or electro-magnetically transmitting and receiving signals between the hearing aid device and an external device; a hearing aid amplifier device having a first and a second operating mode and operatively connected to the directional microphone device, the hearing aid amplifier device configured to amplify directional microphone signals exclusively originating from the directional microphone device in the first operating mode and to amplify signals originating from the directional microphone device as well as signals transmitted from the transmission device in the second operating mode, wherein the directional microphone device is oriented in a horizontal position in the first operating mode, and wherein the directional microphone device is oriented at a downward angle in the second operating mode; and a rotary switch having a first switch section and a second switch section configured to be rotated relative to the first switch section; wherein the housing is connected to the first switch section; wherein the directional microphone device is connected to the second switch section such that a rotation of the second switch section relative to the first switch section enables a switching between the first and the second operating mode.