I'm trying to develop an audio-reactive application using Ableton Live and the midibus library. I'm sending midi signals from two different instruments in ableton to processing. Each instrument should have a different visual response in processing. I'm doing this by setting a different midi channel for each instrument in ableton and by programming different responses for the respective channels in processing. But I'm having problems with the velocity. The velocity of the notes from one instrument affects the behavior of the visuals from the other instrument when both are played together. 

Can anyone help me?

tnx!