I am talking about my wishes for to send abovemention MIDI messages from an multitouch screen that runs MMF or whatever midi program. I guess that it could be possible to « extract » and convert signals from a high quality multitouch screen like Stantum 15.4 and make it a multi-row keyboard instrument like Monolith or Starrlabs Microzone.
Is that possible? Is it only a software problem or Stantum does not send those signals at all?
MMF is not made for Stantum screen only ; it's based on TUIO messages ; and it's not very clear on how to add such values in standard TUIO messages.
for ex, Tbeta / CCV can add blob size at the end of TUIO messages ; but this probably breaks compatibility in a couple of TUIO clients apps.
I'm not aware of any screen that could send multitouch velocity informations ; but most of the multitouch screen can repport the size of the contact area, and sometime the shape / orientation of theses zones ; (but it's very different from pressure or velocity !) ;
I'm working on a version of MMF that can receive this info and map it to.. whatever in a max patch. but it will be hard to make it work with any touch screen, because there is no real standard on how to send this kind of message…
Post edited 12:24 – 2 octobre 2009 by maki Post edited 14:05 – 2 octobre 2009 by maki Post edited 14:07 – 2 octobre 2009 by maki
If there is a signal that reports pressure toward the screen it could be used for channel and polyphonic aftertouch, right?
if a program measures how fast contact area grows form zero a short amount of time after note on event than you can make velocity sensitivity
If a program measures how fast contact area reduces to zero WHILE note on event is hanging a short time BEFORE note off event than it is released velocity.
Result: no need for keyboard or any other physical controllers anymore! all performance and mixing and editing can be done on one screen, just shifting pages
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