Sync issue between midi out and dac

Nov 28, 2011 at 2:02am

Sync issue between midi out and dac

I have two pulses :
1/ an sfplay~ playing a short hi-hat file beginning right at 0ms
2/ a GM click playing the note 80 at a velocity of 127 on channel 10 set to AU DLS Synth 1
When metro bangs them, they follow the same tempo but are not together. It’s subtle but there are a few ms between them.
Could someone explain me why ?
Thanks a lot.

Nov 28, 2011 at 2:07am

Something like this :

– Pasted Max Patch, click to expand. –
Nov 28, 2011 at 10:24am

Audio from DLS Synth goes directly to system output while audio from Max is delayed depending on the I/O vector size. So delaying the notes by the same amount should result in synced timing.

Nov 28, 2011 at 2:39pm

Thanks a lot, this is very helpful !
DLS Synth is always a little mysterious for me…


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