Yeah, a lot of what I hear and see in the videos from the article is just octave multiplication. I've seen much more interesting effects achieved by interruptin

Yeah, a lot of what I hear and see in the videos from the article is just octave multiplication. I've seen much more interesting effects achieved by interrupting fast-running arpeggiators. Also very complex, but far more melodic, and playable by humans in real time. Not that you can't play multiplicated stuff in real time, it just doesn't sound very interesting. Low-pitch piano keys already have harmonics from higher octaves.