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.
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
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But you can’t deny it has a certain flow to it