opaqueice;288436 Wrote: > > I don't agree at all - audibility is -not- a separate argument. We're > talking about audio DACs intended to be connected to a stereo system > and listened to. A change in the output at -140dB, while it might be > measurable, is not relevant. Actually it is. When SD changed the SB3 > firmware volume control, a number of people heard a reduction is sound quality - including me. We weren't aware of what had been done (or even that something had been done) and so this was effectively a blind test.
You seem not to appreciate the difference in inaudibility between truly random noise, and other low-level distortions - if dithering is applied to the rounding process, you should be able to make the noise random, and therefore I'd expect it to be inaudible. However, non-random distortions even at very low levels can definitely be audible. opaqueice;288436 Wrote: > In any case there are (relatively inexpensive) DACs out there which - > at least as far as I can tell from published measurements - are totally > immune to jitter. Given that that's possible, there is no excuse for a > high-end DAC not to reduce the effects of jitter to the point where > they are inaudible. A DAC which doesn't do that is not designed > properly. > Published measurements do not tell the whole story. As a scientist (assuming you are) you should know that there are very few absolutes, and so 'totally immune to jitter' is a meaningless phrase anyway. -- 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=45561 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
