On Sun, Jan 31, 2010 at 7:22 PM, Jan Piet Joris en Corneel <jpjorisencorneel@gmail.com> wrote: > A difference of 2 dB cannot be noted by most people. The minimal > difference you can hear is 3 dB, but please try some more difference > e.g. 10 dB. I tied -8 dB and -20 dB this time but both the sounds still sound the same. Command: rm notes.wav; tones -w notes.wav 1000 440@-8 0 440@-20 && play notes.wav