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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: RE: No revolutions posted by J. Phelan on April 11, 2016 at 18:48:18:
DCS is sort of an odd duck in that they use a proprietary 5-bit discrete ring DAC operating at 64fs, which is quite slow by modern standards.
As I was saying before, higher clock rates are pretty much standard fare. At the present time, 768fs (33.9 MHz) is typical for those using current CS, TI/BB, AKM, and Wolfson delta-sigma DACs. ESS is 80 MHz.
For older equipment, here is a link that has a nice summary of clock rates:
http://www.trichordresearch.co.uk/cd-player-list/
In my opinion, the biggest problem with Redbook is the sample rate is too low, which means the anti-aliasing and reconstruction filters will never be fully sonically transparent. Worse yet, the anti-aliasing and reconstruction filter responses overlap and interact because they're both occupying the same frequency space, which may be why some filters sound better with certain recordings but not others. The low sample rate guarantees that there will never be any consensus "best" reconstruction filter. As long as the format is around, I think we're doomed to go on iterating and tweaking different filter designs.
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- RE: No revolutions - Dave_K 13:14:14 04/12/16 (0)
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