Soulkeeper;683632 Wrote: 
> S/PDIF uses 'Differential Manchester encoding'
> (http://en.wikipedia.org/wiki/Differential_Manchester_encoding) aka
> biphase mark code. From Wikipedia: "A transition is guaranteed at least
> once every bit, allowing the receiving device to perform clock
> recovery." I guess this is part of the reason why any decent DAC can be
> regarded as immune to input jitter.
> 

If by 'immune' you mean that the bits are correctly interpreted, ie the
received code is 'bit-perfect', then I agree, but I assumed that the
jitter affects the clock recovery more than the values of the bits,
since the clock is based on the timing of the transitions between bits.
Of course, I understand that most DACs filter the recovered clock at
the very least, and the better ones will buffer the input and play it
out using an independent clock, so I can't see how jitter can affect
the sound of such a DAC - bit-perfect reception and a decoupled clock
surely 'solve' the source jitter issue.


-- 
chill
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