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					Originally Posted by  Monkman33
					 
				 
				80db would be about 25% of the volume to the human ear as 100db.  technically speaking, an increase of 3db is doubling the acoustic output, but it takes about a 10db increase to double the volume perceived by the human ear. 
 
At least, this is my rudimentary understanding of the concept. 
			
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 Maybe I'm misunderstanding you.  Are you saying that a reduction of 1/5 of measured db equates to about a 1/4 reduction in perceived loudness of the individual?
I understand that human hearing is logarithmic in nature (able to differentiate volume of quiet noises effectively while differentiation of loud noises is harder), but I'm not sure I quite follow your statement.