Computer Audio Asylum

RE: Jitter Research, Analysis & Measurement

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"Both the clock and data inputs however carry noise. This noise infiltrates the chip. Noise as mentioned before includes EMI (as in induced currents), RF pickup (into GHz), IMD, signal reflections and thermal noise. Remaining clock signals have jitter which I see as phase noise and this adds to the overall noise contamination."

So isn't this a good reason to not use the clock generated by the soundcard when set to master which will then be sent to the DAC? The clock of the soundcard can't be as good as the one generated by the DAC, not to mention the PC environment isn't exactly helping.

I think this discussion shouldn't be about the shortcomings of different chips. It's all about which component should be the master for the clock generation and I hope you agree with me that the clock provided by the Scarlatti DAC should be much better then the one from the RME card.

For me the ideal setup would be:

An optical connection from the soundcard to DAC for data transmission.
The DAC set as master which will then send its generated clock to the soundcard.

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