darrenyeats wrote: > Archimago, you may want to look again at the PFM thread since there has > been a bit of question-and-answer! Also screenshots. > Darren
Thanks Darren. I've tried some preliminary tests. I'm actually not sure what Rockwell is getting at with the overshoot handling plots. When I try to roll over that second image (where he lowered the volume), I'm not seeing a difference (anyone else seeing something?). Here's what the AUNE X1 looks like with a 1.00227 kHz square wave (that extra 2.27Hz is because of the 0.1kHz in 44.1kHz): 14753 Note the bit of eve harmonics thrown in and I didn't bother calibrating to 0dB. Here's what happens with an exact 1.00000 kHz square wave. 14754 The DAC1 doesn't look clean compared to his Sony SACD player output because of the upsampling from 44.1kHz to 110kHz - a non-integer upsampling factor; what is or is not contributed by overload is unclear to me. The DAC2 I think upsamples to 211kHz which again is not a clean multiple of 44.1kHz. As such, I suspect again if you look at a 1.00227kHz signal like on the CBS CD-1, the spectrum will still look ugly compared to the SCD-XA777ES. Mr. Rockwell did not mention this issue... +-------------------------------------------------------------------+ |Filename: Standard_Exact_1kHz_AUNE.jpg | |Download: http://forums.slimdevices.com/attachment.php?attachmentid=14754| +-------------------------------------------------------------------+ ------------------------------------------------------------------------ Archimago's Profile: http://forums.slimdevices.com/member.php?userid=2207 View this thread: http://forums.slimdevices.com/showthread.php?t=98661 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
