The "problem" is that when two systems have different frequency response there's no unique way to level their volumes. You could do so using a sine wave at some particular frequency (as Sean suggested) or with the SPL of broad-spectrum noise - but those are just two of an infinite number of different possibilities.
This isn't a problem if you are only trying to determine if two things actually differ. If they don't, all volume-leveling techniques are equivalent, so just pick the easiest. But if they really are different and you want to determine which you prefer it's much more tricky. In that case I would think something like the SPL of pink noise is probably better than a single frequency b(ecause it's an average and therefore more robust to narrow changes in frequency response) but there's no one right answer. It's a question about psychoacoustics, not acoustics. -- opaqueice ------------------------------------------------------------------------ opaqueice's Profile: http://forums.slimdevices.com/member.php?userid=4234 View this thread: http://forums.slimdevices.com/showthread.php?t=38553 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
