Excellent question! 😹
The handle is a reference to the tilde. On a US English keyboard, that’s what I press to type that character.
My first major encounter with the tilde was in college while learning Max/MSP in a few music classes. I liked how its meaning changed in the software to represent a sine wave, or the foundation of everything we hear.
For a few years I’ve had a tiny tilde tattooed on my wrist, when making this sort of electronic music was still just a daydream. It’s funny how that’s materialized into this hobby!
That’s all to say, that you could refer to these things by tilde, when the context is right.