Am Wed, 15 Jun 2011 22:34:40 +0200 schrieb thijs van severen <[email protected]>:
> would you be interested in writing down what you have created ? a bit like > the description i made of my live setup (see > http://hydrogen-music.org/hcms/node/29) I'll try to get around to do that. Also, I'll probably test the setup on a little school gig tomorrow. But what I again observed during playing yesterday... while you can play, also with others, there is some noticeable latency when you look for it. Well, a subtly strange feeling when concentrating on it. When not bothering and just playing, it's fine. So, my Roland drum brain is a bit quicker as the current combo of MIDI/USB Trigger pad and Hydrogen on the PC. Question is if the main source of latency is the trigger pad (unlikely) the MIDI/USB connection or the Linux driver/kernel side (quite possible) or hydrogen ... and that is a good point, IMHO. Hydrogen is not designed for quick live play, is it? I mean, it's great how it works at all, but I imagine that there can be room for improvement for responsiveness. Or ... or it could be the added delay of the MIDI filter, but seriously doubt that. The program does do hardly any computation and if the ALSA MIDI stack would introduce noticeable latency for the signal passing then it would be positively considered utter crap, wouldn't it? But perhaps it would be a good idea to run the filter with realtime priority, too. I think I'd need to measure the latency by monitoring time stamps of midi signals coming in and at the same time recording the produced output of hydrogen via JACK... correlate those somehow... are there perhaps ready solutions to diagnose this? There are people playing MIDI synths with linux, right? Alrighty then, Thomas.
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