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Detached Member
Join Date: May 2003
Location: southern California
Posts: 26,964
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66 dB isn't all that loud. The 8-hour worker Time Weighted Average (TWA) allowable by OSHA is 90dB, but with an action level where if you're exposed to 85 and above (which is less than 1/2 of 90dB) then the employer has to test your hearing annually and take administrative control, such as sound deadening, and personal protective equipment (ear plugs or muffs) and make sure year-to-year your hearing doesn't experience a "threshold shift" at different frequencies.
If you have an iPhone download the app "DJ app" or "Paul Von dyk" it has a crude but useful soundlevel meter and a frequency meter.
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Hugh
Last edited by Hugh R; 03-03-2011 at 05:29 PM..
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