The output sound is not the sound of the planet, josep. Come on. It is a mathematical translation of frequencies from one part of the spectrum into sound frequencies. Do you seriously think planets suspended in vacuum make noise? Or do you think these sounds were recorded in the barely perceptible thin atmospheres of some planets, and yet somehow made sounds that are similar to Terran noise?

Put your thinking cap on, dude. Your dissertations are very entertaining, but bear in mind that there is no map in the world as malleable as mathematics, and it easily floats far afield from the territory. Finding a bunch of quantitative similarities between disparate things is nothing magical, it is just innumerate. "Oh, look, there are five ducks crossing the road, and there are five cars lined up waiting for them, and five pedestrians watching and taking pictures!! Coincidence???? I don't THINK so...".