From Deseret News archives:
Loud noises may be robbing us of our ability to hear
It's called noise-induced hearing loss. And it seems to be built into the American lifestyle.
"People just abuse their ears," said University of Utah physics professor Orest Symko, who teaches the physics of audio and video. "I have a feeling people all will eventually become deaf. . . . It's called evolution."
So-called age-related hearing loss may, in fact, be noise induced. Aboriginal tribes and folks in quiet areas don't lose any hearing over time.
Certain hearing loss is largely preventable, experts agree.
Recently, the Deseret Morning News and KSL-TV took "readings" of sound levels at popular entertainment venues, using equipment and expertise provided by the Rocky Mountain Center for Occupational & Environmental Health. We found many exceeded the 85 decibel threshold where prolonged exposure can cause damage.
A popular Salt Lake-area public fireworks display on the Fourth of July averaged 87 decibels (dB) over time and peaked for a split second at 136 dB, a level OSHA forbids in the workplace without hearing protection.
A boat that seemed quiet maxed at 95 dB while pulling a skier.
A 3006 hunting rifle peaked at 144.6 dB more than 10 times louder than what's called the pain threshold.
Utah-legal fireworks lit at home maxed at 101.6 dB, and for a split-second, 133.8 dB. Experts say illegal fireworks are louder.
Minimal exposure to movies, fireworks and boating probably isn't going to hurt you. But doing these types of activities and many other ordinary tasks often, or for long periods of time, could. And for some, a single gunshot blast can do damage. It's just hard to say who is susceptible until it happens.
You have to understand hearing, the process that converts sound waves into electrical signals the brain translates as sound, to understand how it gets broken.
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