Stephen Davies wrote:
On Wed, 14 Jan 2004, TC wrote:
What are the practical effects with in-correct clock sync
-like to you hear odd buzzing, or dropped voice or gaps of audio ??
Old-fart anecdote about this - in the early 80s we had some 1200bps
modems that we used to connect to client sites. When our phone
company went digital we suddenly started getting a } character at a
regular interval of 10 or 15 seconds.
This turned out to be clock slips in the new digital trunk between the
two exchanges.
So there is one effect of clock slips.
Steve
That must have been an FSK modem. Most advanced modems completely loose
sync on the first sample slip. The sample slip causes a jump in phase,
and phase is critical to the correct operation of most modems.
Regards,
Steve
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