[PD] Crossfade between 2 rj lib save states?

Frank Barknecht fbar at footils.org
Tue May 14 11:15:43 CEST 2013

On Tue, May 14, 2013 at 12:21:10AM -0700, JF wrote:
> > it's been a long time since i looked at rj, but from memory it uses
> > something similar to sssad for statesaving, doesn't it?  So, you assign
> > keys to each of your abstractions and save according to those keys, yeah? > in that case, i would just bundle my entire 'scene' into a bigger parent
> > abstraction, and use a $0 (or similar) prefix to all my state saving keys > so that state loading would be local only to that parent, and not to the > other channel's parent.
> Thanks!
> I presume this approach would mean having two copies of the 'meat' of the 
> patch running side by side?
> Correct me if I'm wrong.
> I'm hoping to only have one copy of the guts running and have the 
> crossfading done to the parameters. As my machine is getting older now.
> I'm not looking to crossfade audio at the end. This will be a midi note 
> and CC generating patch for my synths and samplers to record and to play 
> live with.

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.

 Frank Barknecht                                     _ ______footils.org__
-------------- next part --------------
A non-text attachment was scrubbed...
Name: fast-interpolate.pd
Type: application/puredata
Size: 3631 bytes
Desc: not available
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20130514/7b34d068/attachment.bin>

More information about the Pd-list mailing list