| 摘要 |
An earplug ( 100 ) having an adjustable sound deadening rating is disclosed. The earplug ( 100 ) includes an ear piece ( 102 ) adapted to fit within a user's ear canal and a core ( 104 ). The core ( 104 ) has a predetermined sound deadening rating. The ear piece ( 102 ) includes a coupling assembly ( 106 ) for removably coupling the core ( 104 ) to the ear piece ( 102 ) such that the core ( 104 ) may be removed from the ear piece ( 102 ) and replaced with another core ( 108 ) having a different preselected sound deadening rating to adjust a sound deadening rating of the earplug.
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