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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: Aha...:-) posted by Alex Peychev on July 30, 2006 at 12:57:42:
*** But of course there is a PLL somewhere in the chain! ***No, there is no PLL in the digital audio playback chain, as I've tried to explain. However, given that the drive is an off the shelf PC DVD drive, I'm sure there is PLL in there somewhere in the mechanism, but it's irrelevant.
The data from the CD is read into a buffer completely unclocked (ie., non real time). So a PLL is not required. In fact, generally the drive reads the audio data much faster than real time but sporadically, to allow it to reread the data when it encounters errors etc.
So, yes, there is at least one "digital playback device" that does not have PLL anywhere in the audio path. That was the point I wanted to make :-)
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Follow Ups
- No - you didn't read my post carefully - Christine Tham 18:17:02 07/30/06 (3)
- Re: No - you didn't read my post carefully - Alex Peychev 23:43:44 07/30/06 (1)
- See my other post (nt) - Christine Tham 00:14:43 07/31/06 (0)
- A little more information - Christine Tham 18:41:14 07/30/06 (0)
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