opaqueice;343341 Wrote: > The conclusion of those discussions was that the issue of "resolution" > in digital volume controls is a misunderstanding and basically a myth. > When you lower the volume digitally you lose in signal/noise, because > the noise stays fixed (at least roughly) while the signal decreases. > That's it. The errors introduced by digital volume rounding are in the > least significant bit of 24 (since the SB3 etc. use 24 bit arithmetic), > and therefore are 144 dB down and far below the level of noise already > present in the recording and playback system, not to mention human > perception. Well those were your conclusions but not necessarily *the* conclusions.
It should be clear even to you by now, that the lsb of a 24bit PCM signal is 144dB down on a full scale signal, but not on the actual recording (which should have some headroom even at its loudest points), or its (digitally) volume reduced version. It should also be clear that one type of 'noise' does not automatically mask another type of 'noise' at a lower level (if it did, you'd only hear the loudest instrument in any piece of music). The audibility of noise depends on the character of the noise as well as the absolute and relative levels. -- Patrick Dixon www.at-tunes.co.uk ------------------------------------------------------------------------ Patrick Dixon's Profile: http://forums.slimdevices.com/member.php?userid=90 View this thread: http://forums.slimdevices.com/showthread.php?t=52971 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
