Hi,

I'm new to pd.

I can't seem to figure out how to make a specific atom 'ramp' to a max value over a given time interval (I realize the [line] object does exactly this but read on--) AND THEN ramp back down to its original value AND THEN ramp back to max value and so forth, back and forth ad infinitum until the process is paused. Every solution I can think up produces a stack overflow.

In the end, I would like a patch that fades back and forth between the left and right channel on the [dac~] either at random ramping velocities or at one that I set.

Still figuring this dookie out; don't get me wrong, it's a lot of fun and totally addictive.

Thanks!

well, if you want to do it as a panner, then audio rate is probably the best way. have a look in the pd audio help files for 'triangle'. it's a fair way down the list of help files. J.05 or something like that. (wild guess)

Thanks, mod. I have figured something out-- the only problem is that you can't pause it mid ramp. Either way, it produces the osculating cross-fade with out creating a stack overflow. the trick is the second sequential [delay] object. I've attached the example.

any suggestions or work-arounds to create a what would be in effect a [line] object that can be paused or accelerated in real-time?

Thanks again!

http://www.pdpatchrepo.info/hurleur/to_fro.pd

I would go with mod's suggestion an do this at audio rate using [phasor~]. You can then use [snapshot~] to convert it to messages. See attached.

http://www.pdpatchrepo.info/hurleur/to_fro.mmb.pd

Oh wow, starting to get a bit beyond my league, so very informative. Far more efficient and controllable than my clunky example. the "resolution" control is a nice touch. Thanks again.