I know an engineer who eq's his recording with peaks at the frequencies where the ear is the most sensitive. His goal was to make the sound "Louder" with out pushing compression and limiting hard. I had never seen this. His results were O.K. sounding. I would like to experiment with this technique. I guess we're talking some type of "psychoacoustics". Where can I find average frequency response plots for the human ear? Is there any merits to his theories?