I am trying to control a simple [vline~] ADSR with a MIDI controller. Building the ADSR was easy - it's basically just the [vline~] object. But how can I achieve the following:

I have a MIDI controller with 4 sliders. I want each single slider to be the value for A, D, S and R levels. I am aware of the [ctlin] object. But how would I assemble a message like ([slider1] 1000, [slider2] 1000 1000, [slider3] 1000 3000, [slider4]) ?

Thanks for any help!

Here's the simplest ADSR routine I could come up with in a hurry:

ADSR_Example.pd

Ok so, my mash-up has some serious flaws. First of all the sustain part does not account the magnitude for the midi controller being > 1 most of the time >.<

Second, as is, you can only set attack/decay/release times to midi numbers ranging from 0 to 127 (ms). So here's a fix for that:

ADSR.zip

The [MinMax] module is a small abstraction included in the .zip. You could add any kind of math where the scaling is done. For example some sort of log-ish bending of the midi input might be useful, and since all controller values are now normalized, this should trivial.

Apologies for not getting it right the first time

@bocanegra Hey, thank you so much for this!! I gathered that [pack] could be a solution, but I am pretty new to PD (thankfully not to programming or electronics) and it's pretty hard to find good documentation. I will give your solution a try, thank you again!

@chrisby you are welcome. I am just happy I didn't blow up your speakers with my first attempt

On a side note, this ADSR is pretty basic and lacking in features. Among other things it would be preferable to have exponential curves on each segment like most analog synths...

@bocanegra said:

Among other things it would be preferable to have exponential curves on each segment like most analog synths...

Just last week I made a lincurve~ abstraction, http://github.com/jamshark70/hjh-abs (if I'm writing the address correctly from memory).

Btw the gymnastics at the top could be simplified a bit by [swap], no?

hjh

@ddw_music said:

Just last week I made a lincurve~ abstraction, http://github.com/jamshark70/hjh-abs (if I'm writing the address correctly from memory).

yes, I remember. I use similar concoctions of my own.

Btw the gymnastics at the top could be simplified a bit by [swap], no?

Yes, but for didactic reasons I think the trigger is more appropriate (transparent).