posted 13 February 2009 14:51            

SoftTakeover.kym

I've worked out a way to do soft takeover between different controllers ("soft" meaning that the fader doesn't jump when the control source for the fader changes, but instead the control source switches smoothly the next time the controllers in question cross - useful when, say, moving from controlling the volume of a sample with a fader on a hardware controller to controlling it with a wacom tablet - the volume won't jump during the transition).

See the attached sound. It seems to work well. In it you can change the pitch of an oscillator between 3 different randomized global controllers.

I have two small problems, though:

1) There is often a small click or disturbance to the sound of the low sinewave when the !ControlSourceIndex is changed.
2) It was necessary to program the patch in such a way that !SoftTakeover and !PreviousControlSourceIndex are required to be global controllers - I can't seem to sucessfully rewrite it so that !FaderWithSoftTakeover is generated with a self-contained expression, and !SoftTakeover ends up having to refer to itself. Otherwise, bugs seem to happen that cause the fader to jump when it shouldn't.

The reason this final point matters is because I want to create a softTakeover class, but before I do that I want to get rid of the extraneous global controllers.

Thanks for any ideas...point #2 above is really a mystery to me, and I think figuring it out would help my Kyma programming in general...

posted 17 February 2009 13:59            

Best

posted 18 February 2009 00:31            

Glad you can use it. I've gone ahead and made class of it and should upload it to the tweaky in the next day or two.

I think it's maybe not so straightforward for the soft takeover to function correctly when recalling presets from the VCS (since it doesn't save the Global Controller settings in the preset), but I think I might have an idea for a way around this. If it works, I'll include an example with the file I upload.

best,
Phil

posted 20 February 2009 20:02            

I included the source code, and a version with green variables, so that other people can make modifications if they wish.