| 摘要 |
Hearing protectors of the cup shaped ear covering type should preferably be provided with a sound transfer system which is an acoustic channel (14) or an electroacoustical coupling comprising an exterior microphone and an interior loudspeaker, all adjusted such that the user can hear sound and noise at a moderate intensity level with preference for speech frequencies. An associated problem, however, is that it is impossible to determine the direction to a specific sound source, and according to the invention this problem is counteracted by shaping the outer sides (6) of the cups (2) as rough imitations of the human pinna, these outsides (6) being arranged so as to converge forwardly and having various depressions (8, 10), of which a concha imitating depression (8) is connected with the inlet (14, 16) of the sound transfer system. Also hearing protectors of the supra aural type can be designed in this manner. |
