Julf wrote: > Looking at it in another way, you don't actually sacrifice bits - you > just don't gain any extra resolution when turning down the volume. The > size of the smallest possible "step" stays the same, and thus the noise > floor stays the same (but please don't think of the DAC output as a set > of stairs - one of the most common fallacies in digital audio). So when > you turn down the volume, the quantization noise stays the same, but the > signal volume goes down, thus SNR goes down - but you still either hear > the noise, or you don't. If you don't hear it at full volume, you won't > heard it at lower volume either. > > Yes, I know, I am definitely picking nits, but I just don't want to > allow for any room to propagate the "digital volume control is > detrimental to sound quality" myth... :) > > And let's not get into the subject of dithering... :)
OK that was a more proper explanation thanks, noise floor is noise floor anyhow you curt it ,but it works ! I use digital volume in my own speaker but with dither ;) it's a combo of large gain steps and then a dithered digital volume control on top on that , probably overkill but it is meridian . You calibrate the whole rig against a 86dB target with a meter during install so in practical use you never hear any noise from the equipment . (there are of-course a subset of user tweaking the files the settup progrma sends to the processor and speakers to get more resolution ?) I have tried to abuse the system , played an -112dB signal at full volume I could hear it faintly if pressed my ear against a driver in listening position it disappeared much sooner ,but still at full volume which i never use ------------------------------------------------------------------------ Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=94512 _______________________________________________ Touch mailing list Touch@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/touch
