synchronizing sound cards in a cluster

Andrew A. Raines drew at phg.mc.vanderbilt.edu
Fri Mar 14 11:41:03 EST 2003


Jim Lux <James.P.Lux at jpl.nasa.gov> writes:

> One can fairly easily synchronize to a millisecond over Ethernet,
> but this application needs sync to, at worst, 1 sample time (20
> microseconds) although order of a microsecond would be nice.

clockspeed[1] can alleviate clock drift on the order of nanoseconds
on Solaris and microseconds on Linux (i386 only).  The drift is
even stored in attoseconds, and it counts leap seconds correctly.

If you're interested, have a look at Frank Tegtmeyer's work[2] for
an elegant README-automation solution.

-Drew

Footnotes: 
[1]  http://cr.yp.to/clockspeed.html

[2]  http://fte.tegtmeyer.net/djbware/clockspeed_setup.html

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