thanks for your reply,
The problem is that midi data is a position feedback for the control of a motor, and when msb is stuck, the position command I give is wrong. I don't think the card is to blame cause the same card/patch/interface is working well on win XP.
n

Le 06/02/12 21:57, Jean-Marie Adrien a écrit :
Hello
i would try to force synchronization of incoming midi streams inside pure data 
according to my needs, ie downsampling a little if necessary so that MSB and 
LSB are consistent ... and give a call to interface-z for feedback.
cheers
JM

Le 6 févr. 2012 à 21:15, Nicolas Montgermont a écrit :

Hello list,

I run into a special problem with MIDI input under osx...

I am getting some MIDI inside Pd, the MIDI is coming from an interface-z card 
that is transducing a sensor.
The midi info is on two control number for higher (12bit) precision. Sometimes 
the MSB value is not updated well, but the LSB is, and that gives me weird 
behaviors.

I have tested the same patch with Pd-extended 0.42.5 under mac osx lion and on 
another computer with osx snow leopard, both have the same problem, but the 
same patch on a third computer with windows xp is working well.
I have tested as well two midi->usb interface (a basic one and a motu micro 
lite) with the same behavior.

So it seems to me that the problem looks like Pd midi driver on osx.
I have tested to modify the audio latency, to change the MIDI latency, but that 
gives me no better result.

Do you have an idea of where i can look, or a workaround i can find?

Best,
n
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http://nim.on.free.fr

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