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RE: Infrasound: The Silent Creepy Sound of the Horror Movies
So is there a stable way to generate infrasound without resorting to technological devices or extreme forces of nature? More specifically, is it possible to construct something (with simple tools) which has an eigenfrequency in the infrasound range?
Yes, you can produce low frequency sounds electronically. Since there is a dog whistle whistle which can produce frequency in the ultrasonic range, I think we can get a similar one for infrasound.
I think if you want to make a whistle which generates infrasound you need something extremely long.
Ah I just found this -> https://kellyladd.com/2013/10/19/infrasonic-whistle-david-bowie/ But based on the design I guess it uses interference to generate the right frequency