I didn't mean to question the sense behind upsampling. I fully understand why that makes the (analog) filter design easier and the result better.
But John's argument was that you get a better result by using a NOS DAC and do the oversampling through sox because the interpolation filter in sox is simpler than the multiple ones in oversampling DAC designs and I was wondering why that is and what kind of filter sox is using. Intuitively I still feel just duplicating the samples as "normal" oversampling does it should give the best results but that's just a feeling in an area where I really don't have a lot of experience, that's why I asked. But to me it looks like this: while the "duplication" strategy is assured to create quite powerful images at the same time you can be sure to have all of that going on beyond your cutoff frequency while I feel arithmetic interpolation should create noise over a broader spectrum. --- learn more about iPeng, the iPhone and iPad remote for the Squeezebox and *New: Logitech UE Smart Radio* as well as iPeng Party, the free Party-App, at penguinlovesmusic.com ------------------------------------------------------------------------ pippin's Profile: http://forums.slimdevices.com/member.php?userid=13777 View this thread: http://forums.slimdevices.com/showthread.php?t=99088 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
