Robin Bowes wrote: > Actually, a 3dB increase represents a doubling of the sound power, which > is not the same as "volume".
Which is why the power version uses a 20 log (x/y) and the normal definition uses 10 log(x/y) > It is generally accepted that a perceived doubling of loudness equates > to approximately a 10dB increase, i.e. 10 times the power. Hmmm, I may be mis-remembering things, I thought 6dB required ten times the amp power. Thus a 100wPC amp is not significantly louder than a 60wPC amp. > Anyeway, a 3dB change is not what I'd call a "barely perceptible change > in loudness". The usual definition of one dB is smallest reliably detected change in loudness. Nobody worries about fractional dB. and -70dB cut is considered complete, even when assorted recording medium claim 96dB or more S/N ratio. -- Pat Farrell http://www.pfarrell.com/ _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
