[wdmaudiodev] Re: GFX/LFX fullduplex support.

  • From: tekHedd <tekhedd@xxxxxxxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Thu, 04 Sep 2008 15:11:58 -0600

Tim Roberts wrote:
pete c wrote:
How severe can this drift become?

Who knows? Usually, the capture board and the render board are two different pieces of hardware, with two different clocks. Let's say the quartz crystals on these boards have an accuracy of about 10 parts per million. In the worst case, where one was +10 and the other was -10, at 44.1 kHz you would be drifting apart by 1 sample every second or so.

Hmm. And about half of this offset should be "normal". Once they've pulled out all the 5ppm crystals to sell separately, you would expect that. :)

It's easer to fight for your principles than to live up to them.

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