this post was submitted on 16 May 2024
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what they did :
wtf is shifting?
The wording is comically awkward and imprecise. But if I had to guess, they figured out a way to fiddle with how the air is routed through the secondary portion such that the emitted noise is phase-shifted to cancel out the frequencies they’re targeting.
Seems baffling
Eeeeeeeeeeyyyyyy
But you can’t deny it has a certain flow to it
I wonder if that shares the same physics as silvent's compressed air guns.
Could use an even quieter compressed air gun
No, not the same ... in your paragraph you describe an increase of the frequency at a level human hearing do not perceive while the other made cancellation of a given frequency using phase shifting and recombination.