On Mon, Apr 18, 2011 at 4:52 PM, S. Massy wrote:
the "excess" value is generally on the order of several tens of
samples in each direction. it can reach as high as the low hundreds.
with USB audio (and potentially some firewire devices, the excess can
even get up into the thousands, but its dependent on a variety of
factors. this assumes you are doing the obvious thing and measuring a
loopback via a D/A and A/D converter pair.
for reference, my RME HDSP system, connected to a Frontier Designs
Tango24 converter, meaures 68 samples of total excess latency, so
about 34 in each direction.
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