english: If the two bodies are spinning very rapidly, I have that same chirp, but with a modulation on top of it, so it kind of goes: whir, whir, whir!
non_english: Ako se dva tela okreću veoma brzo, dobijamo taj isti cvrkut, ali s modulacijom povrh njega, pa zvuči nekako ovako: vir, vir, vir!