Hearing protection devices (HPDs) have been developed for several decades to prevent such exposure to intense noise in advance and to be safely controlled during exposure. Although HPDs appear to be a passive method of noise control, they are the most practical and effective when properly fitted for the correct size and have received adequate maintenance. Despite their original purpose, many workers are often reluctant or refuse to wear these devices due to discomfort and a tight fit, even in a noisy environment.
Electronic Hearing Protection Devices, such as non-linear-attenuation earplugs. This type of protector is usually very effective at protecting against impulse noise because the attenuation increases with the sound's peak pressure level.
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