Are you specifically needing this to be audio-driven, or more of an abstraction of that kind of look?
Since you're saying "transform, not travel," I take it to mean you're NOT looking for left-right movement, but just having these extensions "bouncing" up/down off the flat line - is that a semi-accurate description?
Hi Kyle, thanks for prompt reply. What im wanting to have is a definite shape and not a random wave structure. And I don't think audio driven expression will give me a definite form of wave. So, like you said, more of an abstraction. Your description above is pretty much accurate.
Cool - I may have an answer for you, then!
If desired, you can have total control over every one of the peaks and valleys, if that's what you're looking for. Using multiple shapes within a single shape layer, and making use of Merge Paths, you can create some pretty complex shapes while still being able to keyframe the position, size, etc. of each component.
Of course, these shapes' positions could all be driven by expressions (even simple ones like wiggle), if you're just looking for MOVEMENT, but don't want to keyframe everything yourself. I've attached my simple example here, in case you want to poke around and get an idea how to approach this.
This tutorial doesn't address this exact use case, but is good for getting an understanding on how shape layers work, and how you can combine (and subtract) shapes to create more complex setups like this.
Hey Kyle, Im so sorry i couldn't respond back to acknowlegde your reply here. Thanks a lot for your solution. It really did work for me. Sorry again for extremely delayed reply. Cheers mate! 🙂
No worries - glad it was helpful!