| 摘要 |
PCT No. PCT/SE95/00827 Sec. 371 Date Jan. 24, 1997 Sec. 102(e) Date Jan. 24, 1997 PCT Filed Jul. 5, 1995 PCT Pub. No. WO96/04765 PCT Pub. Date Feb. 15, 1996A hearing aid of conventional configuration comprising a microphone at one end adapted to be placed in the inlet of the external auditory meatus, a loudspeaker at the other end adapted to be placed within the auditory meatus, and an amplifying device between the microphone and the loudspeaker, has a means (26) of sound-dampening materials over the microphone to prevent that sound directly impinges upon the latter, but is provided with a passage (27) containing a sound-transmitting medium and directed towards the inner side of one of the parts of the auricle (10), preferably the tragus (14), so that only sound picked up and treated by the auricle (10) is supplied to the loudspeaker. |
