Sorry for a late reply, but resonating horns work almost the same way as a diaphragm horn. Instead of air, it uses an electromagnet to vibrate a metal plate that moves fast enough to create sound, basically like a simple speaker. The electromagnet is hooked up to a circuit that you might find in fire bells or in old buzzers to make the plate go fast enough so it can make sound!
Yet another late reply, but the name of the short says it's a foghorn!ACAhurricaneguy wrote: ↑Sat Mar 30, 2024 11:43 pmLastly, I heard about some sort of horn that uses a chopper-stator mechanism like a siren, but uses some sort of mechanical damper to blast the horn open and closed. I have a video from VintageCollection showing this and I wanted to know what these are called.
https://www.youtube.com/shorts/Ch6_3h9p6bM
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