posted 05 October 2014 19:59            

I want to build a "synth" in kyma that would be particularly good for tweaking live. I'm using this little project to learn about kyma - I'm a newbie so apologies if I'm asking basic questions.

This synth will have an ADSR envelope for it's amplitude. I want to create a kind of "preset" button in the VCS that when I click it, it will set the Attack, Decay, Sustain and Release to specific values.

I've tried using a SoundToGlobalController sound.

I put in the Value field:

code:

---

!Sw01
    true: (1)
    false: nil

---

and in the GeneratedEvent field:

code:

---

!Attack

---

If I use a toggle control for !Sw01 then when I check it the attack fader is set to 1. When I uncheck it the attack fader is set to 0. But I can't then move the fader myself any more.

I suspect the SoundToGlobalController is constantly scanning the value of Sw01 and so is constantly setting the attack fader to either 1 or 0. What I'm really wanting to do is just trigger once of the click event of a button.

Also I can't work out how I assign values to multiple faders (the decay, sustain and release faders).

I'm probably thinking about this all the wrong way - any advice very gratefully received!

thanks,

Alan

posted 06 October 2014 02:10            

You're right. A GeneratedEvent can't be moved in the VCS.
You could use this in the value field of the SoundToGlobalController:
!Sw01 true: (1) false: !AttackVCS

Now you have a second fader (AttackVCS) which is active if the switch is off.
I guess there is a better way to do it but it might get you started..

posted 06 October 2014 03:30            

quote:

---

Originally posted by gustl:

A GeneratedEvent can't be moved in the VCS.

---

...is that because my code is continually re-sending the value to the VCS fader or are you saying that once a fader has been set by code, however that happens, it gets latched and can never be used manually?

Are VCS controls inherently uni-directional? You can either set them from code (so they are displays only) or set them from the VCS by hand, but never both?

Cheers,

Alan

posted 06 October 2014 05:36            

I think it's because it is constantly resending but I could be wrong..
Seems like it's not possible to have both with the same fader for now..
But maybe some other folks around here have an idea?

posted 06 October 2014 17:40            

TriggeredSoundToGlobalControllerDemo.kym

All the best
Christian

posted 09 October 2014 14:43            

thanks

posted 11 October 2014 17:14            

I'm guessing that it only allows you to affect one variable? I guess I could get the effect I'm looking for by having several of these all using the same trigger. Which would mean, to have 4 "presets" for ADSR I would need 16 TriggeredSoundToGlobalControllers. I'm wondering if there's not a simpler way (in code?).

I haven't learnt much smalltalk yet, but in pseudo-code this is what I'm trying to do:

code:

---

on_button_click:
    attack = 0.01
    decay = 0.01
    sustain = 1.0
    release = 0.5

---

posted 12 October 2014 02:46            

You just need 4, one for each parameter. Then use:
(!Button1 * Value1) + (!Button2 * Value2) + (!Button3 * Value3)...

Hope that helps

Edit: Or use a Fader for the Presets and an array:
!Preset of: #(Value1 Value2 Value3...)

posted 12 October 2014 19:19            

What I want to do is create controls that are useful in the context of using a synth for live improvisation. So instead of loading a patch, these modular "preset" buttons just modify one aspect of the sound. I'm trying to create buttons that are at a slightly higher level of abstraction than the underlying, more traditional controls. I'm explaining this badly. Examples might help.

A traditional analog synth might have ADSR controls. These give a good level of control but can be hard to set in a live situation. A few ADSR preset buttons could change between several useful envelope shapes.

I want to try and do the same thing for several other aspects of the sound - the filter, pitch bend range, spread and detune of oscillators, delay, distortion etc.

The one I'm stuck on at the moment is a button to change between poly and mono modes (which I've mentioned in another thread, http://www.symbolicsound.com/cgi-bin/forumdisplay.cgi?action=displayprivate&number=7&topic=000581). I've tried using two midi voices, one monophonic and one polyphonic, but they seem to interact with each other so neither receives all the midi events.

Cheers,

Alan