| 摘要 |
<p>A hearing aid comprises at least one ear-piece unit to be placed in or at an user's ear, said ear-piece unit having at one side thereof a loudspeaker unit and at another side thereof a microphone unit, said hearing aid further comprising at least one amplifying device adapted to amplify electrical signals received from the microphone unit to deliver the amplified electrical signals to the loudspeaker unit, wherein said amplifying device communicates with the microphone unit and the loudspeaker unit and can be worn or supported at the upper part of the user's body.</p> |
