Hi-Rez Highway

A number of Mfgrs have DSD Only Dacs that covert as high as 10x DSD. At

108.220.52.112

oldmkvi

In Reply to: RE: Exactly my point posted by Chris from Lafayette on April 22, 2016 at 08:02:45

2x DSD, the noise is twice as high in frequency as DSD, and the noise is inaudible even there.
It's a complete non-issue.
I think hi-res PCM sounds fine, but I prefer DSD 128.
You prefer PCM, that's fine, but the noise-issue is theoretical.
I know the noise is real, but the "issue' is not.

Follow Ups:

You may be correct that the noise may be inaudible - Chris from Lafayette 19:25:55 04/23/16 (1)
OTOH, I've seen a couple of posts from a listeners which indicate that this DSD 64 noise interacts with signals in the more audible part of the spectrum, to the detriment of the SQ. I'm not sure whether or not I believe this (or can hear it) myself, but all in all, I'd rather not have the noise there at all, regardless of whether it's just above the audible spectrum (as in DSD 64 on SACD's) or it's another octave or two up (as in DSD 128 or DSD 256). I've seen other posts which speculate that this interaction of the audible signal with the ultra-high-frequency noise may account for the "unnatural" smoothness of SACD playback.

My own feeling is that there are some DSD recordings, such as the Channel Classics recording of Mahler's Ninth, where this "SACD smoothness" is NOT present, so I'd conclude from this that what some hear as excessive smoothness in SACD playback is NOT necessarily a result of the high-frequency noise. Otherwise, we'd be hearing it in all SACD/DSD recordings.
- RE: You may be correct that the noise may be inaudible - Disbeliever 02:01:23 07/20/16 (0)
  I do not buy BIS SACD,s because I find dynamic range problems with many of them and constantly have to use the volume control which is seldom a problem with other brands as for downloads never for me I prefer to have a physical disc.

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