Compressible Foam Ear Plugs:
Non-Compressible Foam Ear Plugs (reusable):
How effective is Hearing Protection?
7 dB correction:
7 dB correction + 50%:
REMEMBER! You want to keep your Time-Weighted Average
noise exposure to < 85 dB!
Wear hearing protection that fits you well, is comfortable and has the highest NRR. In reality, unless you are working around high levels of noise all day, the 7 dB Safety Correction is probably adequate.
Noise Internet Resources:
National Institute for Occupational Health (NIOSH)
Occupational Safety and Health Administration (OSHA)
Health & Safety Executive (United Kingdom)
HEALTH & SAFETY - NOISE
Any source of sound sends vibrations or sound waves into the air. These funnel through the ear opening, down the ear canal, and strike the eardrum, causing it to vibrate. The vibrations are passed to the small bones of the middle ear (ossicles), which transmit them to the hearing nerve in the inner ear. Here, pressure changes cause hair cells to move which become nerve impulses that go directly to the brain, which interprets the impulses as sound.
Excessive noise can permanently damage the hair cells in the inner ear causing noise induced hearing loss:
What is NOISE?
Noise Induced Hearing Loss:
What NOISE levels are safe?
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