Hi Phil, Phil Leigh;494775 Wrote: > Marco - let's summarise where we are: > 1) wav vs flac via spdif = identical > 2) wav vs flac via analogue = identical >
i'm a bit confused now, your point 2 should be: 2) wav vs flac via analogue = identical, unless clock drift (same as 2 different playback of the same wav file). Is it correct? What i'm not sure to understand is: If you think a block skema like this one: [1.ANALOG ORIGINAL] -> [2.AD CONVERSION] -> [3.CD PRODUCTION] -> [4.CD RIPPING} -> [5. STORAGE ] -> [6.SBS + NET + SB DIG OUT] -> [7.DA CONVERSION] -> [8.PLAYBACK] -> YOU. The drift problem is caused by the different clocks in step 2 and step 6, correct? So is not practicaly possible to eliminate, i'm wrong? Steps in between we assume are 'error free' or better errors are eliminated in the digital domain (is quite a hard simplification, but please forget it for a moment). In our test we replaced step 8 with a new step 1 to step 6 short cicle, with Your link you could eliminate the drift IN this cicle, so we Know drift is the major (if not the only) cause of errors, just becose two istance of this cicle provvide NULL differences, we can assume the remaning kind of errors (if any) are at least systemic. I'm wrong with this? Now, if we compare the WAV file in storage (step 5) and the wav file you recorded, the difference we are going to detect (if any) are due only to the DA conversion (step 7) and the reverse AD conversion we introduced, plus the Analog IN and OUT stage involved and cables, cleaned by Clock Drift, rigth? As stated before, those difference appear to be systemic. For sure we could point those differences (or distortion) using better quality gear, design or else as people do from the realy beginning, but let's say they will always be in place in some measure, SB+ introduce some changes over standard SB3, they claim to make better, other do the same in other ways, maybe TP or Touch will be even better. What I could not figure is how you could point to difference that are 'randomic' as Drift seems to be? If - just for drift - i'm getting differences between 2 playback of the same file (and that means, by the way, is the DA clock that is changing, the one in the RECORDER AD is fixed once for ever!) the only think you could do is Make better the DA Clock, but this will not eliminate the problem, since also if error free, you never change the original in AD, but at least we will measure a SYSTEMIC error! Are Touch o TP getting better in this matter? How? Thanks a lot. Marco -- marcoc1712 ____________________________________________________________ SB+, Klimo Merlino + Kent Gold, Monitor Audio Studio 20 Gold SE+, Klimo reference and DIS Interconnect. ------------------------------------------------------------------------ marcoc1712's Profile: http://forums.slimdevices.com/member.php?userid=34842 View this thread: http://forums.slimdevices.com/showthread.php?t=71321 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
