This is a tangram version of the Similarity Symbol used in geometry.

Of course,the tilde (~) has several applications in mathematics, like in logic, statistics, vectors, linear algebra, group theory, etc. Add one on top of the other, and you get ≈ (the approximation symbol).

I presented one possible solution. There are others. There is no audio in video.

This is the fourteenth of several puzzles that will have a mathematical theme to them.