Emitting an outline on audio input hit (drum, etc) from a shape

Beginners
1

Hey everyone - I’m having some trouble getting started on a new project and I’m looking for some advice on how I might be able to achieve the effect I’m after.

Here’s what I want to do:
Basically, I want to emit an outline from my logo whenever a drum (or other audio trigger) is detected, and have that flow out of the viewport. I’ve set up a similar look based on this excellent tutorial from Simon Alexander-Adams, but its not quite the behavior I’m going for. I’d like the logo to stay white and filled in, and emit an outline only when that audio input is triggered. I assume there’s a way to animate this via a feedback loop, but I’m having trouble getting going in that direction.

Any advice?

Tox attached:

LogoExample TOX.tox (6.2 KB)

2

Is this what you meant?

LogoExample TOX.4.toe (29.8 KB)

I replaced the logo with a circle, since i don’t have the file. The feedback loop introduces a small white line that slowly moves right on every audio trigger (mapped it to the kick for now). Let me know if you have any questions about how i did this. I also included an anti aliasing node at the end to smooth it all out a bit. That may or may not be needed depending on your logo.

I also recommend looking into polar coordinates as a way to make circular things, like described here: https://www.youtube.com/watch?v=7DkCTJ8qlPI