stackyFACTSIt turns out canines aren't reacting to magic when you silently blow into a metal tube, you are merely assaulting ears much better than yours.
It turns out canines aren't reacting to magic when you silently blow into a metal tube, you are merely assaulting ears much better than yours. Human hearing aggressively taps out at around twenty kilohertz, strictly ignoring any pitch higher than that. The specifically engineered whistle blasts an incredibly loud acoustic tone sitting far above our pathetic threshold, allowing you to easily call your pet without violently bothering the neighbors across the street.
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