I really loved the intro, it was hyping me up and I didn't know what I was in for.
But when the tutorial level started, I had noooo idea what to do. I did try to read up on the Fournier transform but I couldn't understand any of it, so I ultimately just tried random numbers until I gave up and clicked on the solution button.
That being said, signal as in "a signal from space" is one of my favorite intepretation of the theme, and I feel like it's a really difficult one to really build an experience upon, and I think maybe with a more dumbed-down system, with more self discovery applied, it would have been a super cool game.
Good luck, and good work on your entry!