Generating waveforms/oscilloscope visuals - is this actually this hard?

Beginners
1

Hey guys, trying to do something simple but falling short. Been googling, looking at the forums and discord to no avail - maybe I’m using the wrong terminology (Oscilloscope, Waveform display…)

I want to be able to show waveforms like this from live audio inputs:
https://www.youtube.com/watch?v=SXU3mL_L-Rc

What I’ve tried:
I’ve use an Audio In Chop → Select Chop (to select a single channel) → Trail Chop. This looks similar to the above in the trail chop.

But I can’t for the life of me figure out how to make it a TOP from there to make it an actual customizable graphic element like this - the Chop to Top operator generates a single line. ChatGPT keeps sending me down rabbit holes that don’t work using TOP feedback loop setups that don’t work.

Would really appreciate some guidance here. Appreciate it!

2

hi,

you can use an OP Viewer TOP though you will also extract other viewer informations alongside the wave form

Otherwise use a lineSOP and modify points positions according to the wave form

3

Hi @JoelBerghult,

you can also use the CHOP to SOP directly to generate a geometric representation of your waveform before rendering it.

image
image2844×1325 212 KB

Make sure to also check out our curriculum at learn.derivative.ca for short introductory videos explaining some of the concepts behind TouchDesigner. Additionally have a look at the OP Snippets of the operators to see some examples of their usage.

cheers
Markus