Hey guys, it certainly seems like there has been a move in the hardware world over the last few years towards having multiple filters on DAC's. Looks like most of this is towards having a choice of intermediate and minimal phase filters over the standard linear filter - everything from relatively inexpensive DacMagic to fancy Meridians. Testing methodologies like John Atkinson's measurement reports in Stereophile in recent years seems to be spending more time showing graphs of impulse response and less talk about how many ps of jitter is in the signal.
I have yet to come across any good studies/reports describing audibility of this pre-ringing. Looking at the graphs, it seems insignificant; the amplitude is very low and frequency of the ringing seems to be inaudible to human ears at least. I remember reading about this back in 2006 with the "Ringing False" article in Stereophile and passing it off since even those guys could not agree on the sound (they do have 'golden ears' after all :-) http://www.stereophile.com/content/ringing-false-digital-audios-ubiquitous-filter-filter-listening-impressions Bottom line, has anyone been able to show a significant detectable difference under *controlled* settings for standard linear phase filtering vs. something like minimal phase filters with no pre-ringing say in standard 16/44 music or even test tones (I assume the difference may not be beneficial due to phase shift in the minimal filter)? Is this business with filters yet another solution for a problem that doesn't exist? BTW Can anyone explain in layman's terms WTF "apodizing" means? I see that term thrown around alot... Thanks! ------------------------------------------------------------------------ Archimago's Profile: http://forums.slimdevices.com/member.php?userid=2207 View this thread: http://forums.slimdevices.com/showthread.php?t=96098 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
