| 摘要 |
The present disclosure concerns an acoustic valve (10) for hearing protection. The valve (10) comprises a housing (1) that is placeable or integrated in an ear plug (100). The housing (1) comprises a sound passage (2) extending through the housing (1) for allowing at least partial transmission of sound from the external surroundings (11) into the auditory canal (13). The housing comprises an impulse filter (3) comprising a rigid plate (4). The rigid plate (4) forms an enclosed volume (12) within the sound passage (2) of the valve. The rigid plate (4) comprises at least one perforation (5) for passing part of the sound from the external surroundings (11) via the perforation (5) into the enclosed volume (12). The housing further comprises an acoustic filter (6) comprising a mesh (7) arranged in the sound passage (2) between the rigid plate (4) and the auditory canal (13). |
