Hearing protection fit-testing is a procedure used to determine whether an individual’s earplugs or earmuffs provide adequate protection against harmful noise levels. The goal of fit-testing is to ensure that hearing protection devices (HPDs) are properly fitted to each individual, as a poor fit can significantly reduce the effectiveness of the hearing protection. There are several aspects involved in fit-testing: 1. **Assessment of the Fit**: This can involve both subjective and objective methods.
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