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In Reply to: RE: BIS hi-rez multi-channel downloads are now available on the eClassical site posted by Chris from Lafayette on April 20, 2016 at 20:23:24
BIS doesn't record in DSD, so naturally there will be no DSD noise.
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Since the only way to get hi-rez multi-channel recordings from BIS up until now was to obtain the SACD's (with their necessary conversion to DSD), the fact that the multi-channel downloads now provide a more direct path to the original (non-DSD) master represents an improvement. (Whether it's audible or not is something we can all argue about - but I for one am extremely happy about this new development!) Believe me, I've been on Robert's case about this for years - in my own polite way of course! ;-)
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.
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.
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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