Davesworld wrote: > I know this is long and sounding like a rant. Well - yes, it does sound like a rant. And while most of your points are basically true, it seems a bit like a stream of consciousness diatribe. To a non-believer, it will sound like a bunch of opinions stated as fact, and that's not going to convince anyone.
I'd like to address a few points. Davesworld wrote: > Many are fooled by the engineering representation of a sampled sine wave > that shows a stair step effect, this effect does not exist in > reproduction. It has never been seen on a scope or otherwise. For an in-depth explanation of the reasons why (and lots of other digital audio fundamental truths), see Monty's excellent video: https://xiph.org/video/vid2.shtml - this is the sort of hard evidence you need to present to people who believe otherwise. Davesworld wrote: > > The Fatal Impact from the eponymous Dead Can Dance album that I > purchased as a download. The red sections are where the clipping > occurred. > Your screen shot showing the clipping is from Audacity, which is known to have a flawed clipping detection algorithm. PCM samples of N bits range in value from -(2^(n-1)) to +(2^(n-1)-1). A solitary sample at -(2^(n-1)) is NOT necessarily a clip, but Audacity will tell you it is. I'm not saying that the Dead Can Dance file doesn't have clipping, but the Audacity screen shot is not proof that it does. Davesworld wrote: > I do prefer jitter to be under 10ms though given a choice. I sincerely hope that is a typo and you meant to say 10ns! Davesworld wrote: > I'm sure someone has done tests where they induce varying degrees of > jitter while test subjects listen. Indeed they have: Benjamin & Gannon. Theoretical and audible effects of jitter on digital audio quality. 105th AES Convention, 1998 Jitter added to digital signal between transport and DAC with a hardware device. Conclusions: uncorrelated jitter inaudible below 10nS rms on pure tones; uncorrelated jitter inaudible below 20nS rms on music signal Ashihara, Kiryu et al. Detection threshold for distortions due to jitter on digital audio. Acoust. Sci. & Tech. 26, 1 (2005) Jitter simulated in the digital domain. Conclusions: uncorrelated jitter inaudible below 250nS on music signal. Transporter -> ATC SCM100A ------------------------------------------------------------------------ cliveb's Profile: http://forums.slimdevices.com/member.php?userid=348 View this thread: http://forums.slimdevices.com/showthread.php?t=108499 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
