cliveb;150154 Wrote: > Just a slight correction: 8 bits is actually about 48dB. 1 bit is very > nearly 6dB (6.0206, to four places). > > > Well actually decibels are defined according to the ratio of the power > or amplitude in the signals. Twice the power is about 3dB, twice the > amplitude is about 6dB. (This is why 1 bit corresponds to 6dB: when > converted to analogue, each bit doubles the output voltage > (amplitude)). > That makes sense, because when you double the amplitude, you quadruple the power. Good old Ohm's law.
cliveb;150154 Wrote: > > I'm not sure about the psychoacoustics of perceived volume w.r.t. > decibel change, but I seem to recall that twice as loud corresponds to > about a 6dB increase - ie. it tracks the amplitude rather than power > scale. Whatever, a 10dB increase is certainly going to sound more than > twice as loud. > > Indeed it is. And -48dB is very, very quiet. Thanks for the enlightening post. If I remember correctly, the minimum smallest increase in sound level that people can hear is 3db. Any comments on that ? Tom -- tomsi42 SB3, Rotel RC-1070/RB-1070, dynaBel Exact, Kimber Kable 4TC and Timbre. ------------------------------------------------------------------------ tomsi42's Profile: http://forums.slimdevices.com/member.php?userid=2477 View this thread: http://forums.slimdevices.com/showthread.php?t=27832 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
