DCtoDaylight;216936 Wrote: > The attraction of 96K Sampling (not up sampling) over 44.1K sampling, is > that it moves the brick wall filter from 22.05 kHz to 48 kHz. This can > have audible benefits, because the 22kHz filter usually has measurable > affects in the audible pass band. Move the filter to 48k and the > effects are outside of the audible portion of the pass band. > > Oversampling on playback allows similar movement of the re-construction > filter, and has been used by all playback systems for 20 years now > (recall 4x or 8x oversampling, or 176K or 352K to keep the same scale). > Usually, its used to allow a low order re-construction filter (ie, the > reconstruction filter does NOT have to be a brick wall design, 3-4th > order is usually enough). > > Upsampling is a term used by some to describe what they feel is a > better oversampling algorithm, but the cold fact of the matter is that > there's really no difference to the two. They are both changing the > data rate, but neither is really capable of recreating what has been > lost by the original anti-aliasing filter. Even if you knew exactly > how to compensate for the audible affects of the anti-aliasing filter > in one studio's A/D, it wouldn't necessarily work for another. > > Hope this doesn't just confuse things more! > Cheers, Dave
Thanks for the response Dave. I guess I need one more point of clarification: you mention there is no difference between upsampling and oversampling, but I though there is one key difference in that upsampling is done completely in the digital domain upstream from the DAC (as is the case with my Behringer SRC2496). -- Videodrome Two-channel System: SB3, into Musiland MD-10 DAC; Outlaw 970 Pre/Pro; McCormack DNA-125 amplifier; Quad 11L speakers; Sota Sapphire ttbl. w/ Grado Ref. Platinum Cart. into Rolls Bellari VP-129 tube phono stage; Marantz 10b; Nakamichi RX505; Cables Used: DH Labs, Van den Hul, Distech, Monster, many more. ------------------------------------------------------------------------ Videodrome's Profile: http://forums.slimdevices.com/member.php?userid=11727 View this thread: http://forums.slimdevices.com/showthread.php?t=36986 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
