A Hearing Protection Device (HPD) is a device designed to protect the wearer's hearing from harmful noise levels. These devices are used in environments where noise exposure can lead to hearing loss or other auditory issues, such as construction sites, factories, shooting ranges, and musical performances. HPDs come in various forms, including: 1. **Earplugs**: Small plugs made from soft materials that can be inserted into the ear canal to block sound.
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