Earplugs protect hearing by blocking part of the sound energy before it reaches the eardrum.

The longer version

A plug seated in the ear canal forms a barrier that reflects and absorbs part of the arriving energy before it can reach the eardrum. Soft foam expands to fill the canal, while shaped silicone and filtered designs leave a small passage or a tuned element in place.

Attenuation is rarely equal across frequency; simple plugs cut the high end more, which makes music sound dull and muffled. Versions made for players use a flatter response so tone colour survives, and fit matters more than the material. Inserted properly, they lower the level enough to make long exposure far safer.

Where this entry sits

Sound and Music gathers facts about how vibrations move through air and water, how ears turn them into meaning, and how instruments and notation shape what listeners hear. Expect echoes, pitch, volume, acoustics, and the odd silence in between. The full list sits on the Sound and Music page, where every entry is listed in order.