Re: [LAU] midi triggering delay

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To: linux-audio-user <linux-audio-user@...>
Date: Tuesday, September 8, 2009 - 9:18 am

andy baxter wrote:

OK, I have tried the following:

- using a program which turns the computer keyboard into a virtual midi
device. This makes the sound much more immediate. Having tried this, the
contrast makes it obvious that there is still a problem with delays from
the edirol keyboard.
- running qsynth using the alsa driver. No difference - when I play from
the edirol keyboard there are still noticeable and annoying delays.
- running qsynth as root (using alsa). Again no difference.
- using zynaddsubfx instead of qsynth (again with alsa). Again, there
are noticeable delays.

This makes me think that the problem is to do with the usb midi driver
or the usb hardware on my new laptop - maybe an interrupts issue? I'm
not sure how to get round this though. I'm wondering if getting a
cardbus usb adapter would help?

andy

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Messages in current thread:
[LAU] midi triggering delay, andy baxter, (Tue Sep 8, 1:02 am)
Re: [LAU] midi triggering delay, andy baxter, (Sat Sep 12, 9:38 am)
Re: [LAU] midi triggering delay, Clemens Ladisch, (Tue Sep 15, 11:44 am)
Re: [LAU] midi triggering delay, andy baxter, (Thu Sep 17, 6:17 pm)
Re: [LAU] midi triggering delay, Clemens Ladisch, (Tue Sep 22, 8:45 am)
Re: [LAU] [Alsa-user] midi triggering delay, andy baxter, (Sat Sep 19, 3:43 pm)
Re: [LAU] midi triggering delay, , (Fri Sep 18, 11:08 am)
Re: [LAU] midi triggering delay, andy baxter, (Wed Sep 9, 4:28 pm)
Re: [LAU] midi triggering delay, andy baxter, (Wed Sep 9, 5:42 pm)
Re: [LAU] midi triggering delay, James Cameron, (Thu Sep 10, 4:17 am)
Re: [LAU] midi triggering delay, andy baxter, (Tue Sep 8, 4:15 pm)
Re: [LAU] midi triggering delay, Norval Watson, (Tue Sep 8, 11:49 pm)
Re: [LAU] midi triggering delay, Paul Remmers, (Tue Sep 8, 6:00 pm)
Re: [LAU] midi triggering delay, andy baxter, (Tue Sep 8, 6:37 pm)
Re: [LAU] midi triggering delay, andy baxter, (Tue Sep 8, 7:00 pm)
Re: [LAU] midi triggering delay, andy baxter, (Tue Sep 8, 9:18 am)
Re: [LAU] midi triggering delay, James Cameron, (Tue Sep 8, 9:54 am)
Re: [LAU] midi triggering delay, david, (Tue Sep 8, 6:30 pm)
Re: [LAU] midi triggering delay, andy baxter, (Tue Sep 8, 6:38 pm)
Re: [LAU] midi triggering delay, david, (Wed Sep 9, 5:17 am)
Re: [LAU] midi triggering delay, James Cameron, (Wed Sep 9, 5:25 am)
Re: [LAU] midi triggering delay, andy baxter, (Wed Sep 9, 8:28 am)
Re: [LAU] midi triggering delay, david, (Wed Sep 9, 9:19 am)
Re: [LAU] midi triggering delay, andy baxter, (Wed Sep 9, 10:54 am)
Re: [LAU] midi triggering delay, david, (Thu Sep 10, 7:45 pm)
Re: [LAU] midi triggering delay, Clemens Ladisch, (Fri Sep 11, 8:01 am)
Re: [LAU] midi triggering delay, Rui Nuno Capela, (Wed Sep 9, 11:13 am)
Re: [LAU] midi triggering delay, andy baxter, (Wed Sep 9, 11:26 am)
Re: [LAU] midi triggering delay, Philippe Hezaine, (Tue Sep 8, 6:59 pm)
Re: [LAU] midi triggering delay, david, (Wed Sep 9, 5:18 am)
Re: [LAU] midi triggering delay, andy baxter, (Tue Sep 8, 7:06 pm)
Re: [LAU] midi triggering delay, andy baxter, (Tue Sep 8, 4:55 pm)
Re: [LAU] midi triggering delay, , (Tue Sep 8, 7:14 pm)
Re: [LAU] midi triggering delay, andy baxter, (Tue Sep 8, 1:48 pm)
Re: [LAU] midi triggering delay, , (Tue Sep 8, 2:14 pm)
Re: [LAU] midi triggering delay, andy baxter, (Tue Sep 8, 3:20 pm)
Re: [LAU] midi triggering delay, James Cameron, (Tue Sep 8, 2:20 am)
Re: [LAU] midi triggering delay, andy baxter, (Tue Sep 8, 7:00 am)