| 摘要 |
The invention relates to a hearing protection device (10) comprising a shell to be worn at least partially within a user's ear canal (14), wherein the shell is provided with a receptacle (16) having an outer opening towards the ambience and an inner opening (22) towards the ear canal, and wherein an acoustic filter element (24) for attenuating sound comprising open-pore porous material (28) is engaged within the receptacle in a detachable manner.
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