| 摘要 |
<p>A hearing aid for listening only a desired sound selectively with no trouble even when a person converses with a plurality of persons during a conference. The hearing aid comprises a hearing aid body having hearing aid function and a function of receiving a signal from an external microphone, and a separate external microphone section, characterized in that Communication between the hearing aid body and the external microphone section is switched on or off automatically and the hearing aid body exhibits the function of an ordinary hearing aid when communication between the hearing aid body and the external microphone section is disconnected.</p> |
