Do church bell ringers wear ear mufs ? except they should to undamaging guard their audible range?
x
Answer: i don't know if they wear them.
with deafness, it's not so much short term bursts of swish that cause deafness, but long term exposure to loud situation noise (eg. a factory).
this is because attached to your eardrum are 3 bones (the ossicles) - they transmit the sound to your inner ear. contained by the presence of a sudden loud noise there are muscles that verbs these bones away to cut the connection so to speak. this prevents deafness from short term loud crack.
in the presence of background increased resonance (like huming machinery) this protective mechanism doesn't work and you willget sensory hearing loss.
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