they call some of their remixes "signal remix", which would fit the signum theme. I've given that a thought as well.

Nope, they call it Signum Signal... new alias

Yeah the signum signal is one which corresponds to the sign of the time value. That is, it is -1 for all negative values of time, and +1 for positive values of time.

Plot of the signum function:

What is this function used for?

It's used to confuse university students on Signal Processing exams.

What the hell is this topic about?

spam

There is no spam here only facts about signum.

signum : sign, seal, indication (from Latin)