[PD] Crossfade between 2 rj lib save states?

However don't rule out audio for speeding up the crossfade itself. Attached

is a very fast way of interpolating two 64-element parameter lists using audio operations in a subpacth, that is suspended after each interpolation run using a [switch~] object. Drive this at your desired metro-speed and you have a nice and tidy interpolation system. By using a different block size in the subpatch and bigger tables, you can also extend this to bigger preset list sizes. And it still is very fast - much faster than if you would use a message based approach which involves list unpacking and so on.

That's very impressive Frank. It's over my head a litte but I'll explore your patch to try and understand it. Thanks very much for posting.

Cheers, John.