Safe noise dose chart

For a of , the maximum exposure time is according to NIOSH or according to OSHA.

How to compute

OSHA sets the REL for 8 hours (480 minutes) at 90 dB(A), and the exchange rate at 5 dB. NIOSH is more stringent, with a REL of 85 db(A) and the exchange rate at 3 dB.

The formula is:

function maxExposure(level, REL = 85, rate = 3) {
	return 480 / Math.pow(2, (level - REL) / rate);
}