[LAD] [64studio-users] MIDI jitter

[Adrian Knoth]

On Thu, Jul 01, 2010 at 07:43:38PM -0400, Paul Davis wrote:

> > [[see also latency test results for USB 1.0 devices Emagic MT-4 and
> > Edirol UM-2, below reply]]
> 
> just for comparison, here are the results for an RME Digiface:
> sudo /usr/bin/alsa-midi-latency-test -w -r -R -i 20:0 -o 20:0

You're both missing an argument after -w. I wonder (but haven't
checked the source) why the tool even starts when you don't provide the
value for the wait time.

Niels, you need to re-evaluate everything, too, your data is also aligned
to USB frames as pointed out by Clemens two days ago.

I use -w 20 -r now, alsa-midi-latency-test then prints out a message like
"interval between measurements: 20.000 .. 40.000 ms".


HTH

-- 
mail: adi at thur.de  	http://adi.thur.de	PGP/GPG: key via keyserver