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Unread 06-04-2008, 18:13
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DonRotolo DonRotolo is offline
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Re: OSHA, Safety and event volumes

Quote:
Originally Posted by Matt H. View Post
I wear ear plug with 36db noise reduction (remember this means 36 orders of magnitude less)
Not exactly - 36 dB doesn't translate to 36 orders of magnitude (10^36). In sound, 3 dB is a doubling of sound levels, so it's 2^12 times louder (or quieter). Also note that SPL (Sound Pressure Level), measured in deciBels, weighted toward human ear response ("A" weighting, or dBA) is subjective, in that 1 dB is defined as the smallest change that a human can detect. Yes, it is measured objectively, but the delta SPL is subjective for 1 dB.

Nonetheless, I wear ear plugs at every FIRST event, even in the pits, with few exceptions - it seems to me like it is always too loud, and I like my hearing thank you.

Don
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