Har-Bal Users Forum BBS

That is very interesting. Thanks for the info. I had always looked at an equal loudness contour and it doesn't really look like a -3db slope as it peaks at ~1.5khz and 10khz... but I suppose as a trend it does have a -3db/oct character.

I loaded a file of white noise and it seems there is a ~3db per octave slope to the graph. Is this true? What is the reasoning behind this?