28 May
2010
28 May
'10
9:14 p.m.
Ralf Mardorf wrote:
Veronica Merryfield wrote:
Ok this would cause jitter because of the slew rate? But is there a
distance of (around or exactly) 100 Hz? Will the card itself split the
clock from 1000 Hz to 100 Hz? I guess the standard clock by RT kernels
will be 1000 Hz. Right?
Just thinking about what I had wrote and
remembered the semantics
used here...
http://www.maxim-ic.com/app-notes/index.mvp/id/3503
And how would this cause the issue? One more hint: card X is a very high end one. It
should
be 'perfect', or at least much better than card A.
... which might suggest that Card X is not performing well. Since it
has been stated the card x is not USB, it is possible that this card
has it's audio clock derived from the PC clock which is likely
dithered - they call it spread spectrum to help reduce radiated noise
in testing.