teros;381196 Wrote: > Sorry. Nope, I mean the "Practical Implications" section of this one: > > http://en.wikipedia.org/wiki/Sampling_(information_theory) > > > In short, I agree with you wholeheartedly that 44.1 captures all the > salient information of a band-limited (20-20khz) signal. No doubt about > it. > > The key point that I'm trying to make is that it is not possible to > implement the necessary anti-aliasing and reconstruction filters in a > sonically-transparent way. We cannot build "clean" filters steep enough > - 96dB down immediately for 16-bit data (24-bit is worse). Phase effects > alone are large. > > These filters are very possible at 88Khz or above. > > > > > They are not wrong. We just can't engineer the filters necessary to > make their math "real." > > > > Fair enough. I do not believe that the two files would be bit-perfect > correct, but - as I have said before - the blind listening test may be > challenging! <g> > > > > Believe me, my mind is open, and you make excellent points. It would be > quite nice for me and everyone else if 16/44 sounded as good as 24/88 > (or above). But in my opinion, it doesn't. > > I will also point out that another key variable is in play besides > sampling rate - bit depth! I must confess that I have not done tests > at, say, 16/96. But one day I shall.
You should try 16/44.1 vs 24/44.1 - very interesting. I think 24 is definitely "better". I agree that 16/44 is not as good as 24/x where x >= 44! :o) I now understand what you are saying about the filters. Oversampling allows the recovery filter in the DAC to work "perfectly" regardless of replay frequency. The oversampling moves the filter frequency out of harms way. Anyway, you might find some blind tests with every combination of rate/depth quite interesting! Also the effects of downsampling from a higher resolution. Phil -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal...SB3+Stontronics PSU - Altmann JISCO/UPCI - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF Triplethreat(Audiocom full mods)- Linn 5103 - Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Kimber & Chord cables Outdoors: Boombox+Creative Sub (If I remember to turn it on...) ------------------------------------------------------------------------ Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=57631 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
