I need to do some syncing, but not sample accurage, 1/60th of a second would be sufficient I think.
Do I need to worry about jitter? What delay size is commonly needed for sample-accurate stuff?
Thanks b. ----- Original Message ----- From: "Hans-Christoph Steiner" hans@eds.org To: "joreg" joreg@gmx.at Cc: "Josh Steiner" josh@vitriolix.com; pd-list@iem.kug.ac.at Sent: Tuesday, December 16, 2003 4:19 AM Subject: Re: [PD] tight syncing of two pd machines...
Well, if you can get the timetag aspect of OSC working, then it would be good. You just need to set the delay on the OSC timetags to be greater than the jitter, then it will be reliable (as reliable as your computer's clock). That is, of course, depending on implementation. Many if not most OSC implementations do not do timetags, AFAIK.
.hc
On Wednesday, Dec 3, 2003, at 13:43 Europe/Brussels, joreg wrote:
halo.
in a recent setup i had to sync a pc that generated sounds to another that did the visuals. all tests with udp or tcp connections were unsatisfying. the beat was not received constantly on the other machine. now i do it with midi and am happy. i didn't measure anything but a jitter is no longer obvious.
osc will not be better than netsend via udp since it still uses udp.
grkks. joreg.
JS> does anyone have any good experience getting *very* tight timing sync JS> between two computers running pd? for my first attempt i just used JS> [netsend]/[netreceive] to send a message (the number of the current JS> measure) and got really nasty jitter (10's of ms). last night i banged JS> out a little net latency test patch and the results were so bad i JS> decided i was tired and it must be a problem with my code ;)
JS> so... how have you achieved tight timing sync? should i give up on JS> network sync and just use a midi cable? how about OSC?
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