Jabrosky
Banned
For the short I'm working on, I need a tool or weapon that could be used to repel a Tyrannosaurus rex. For story reasons it needs to be inconspicuous, so I thought I could use something like a dog whistle. That is to say, it would be a special kind of instrument that humans couldn't hear, but it would sound painful to a T. Rex. However, it would work at the opposite sound frequency from a dog whistle. Whereas dog whistles produce high-frequency (or ultrasonic) sound, this hypothetical whistle would produce the kind of low-frequency (or infrasonic) sound that large dinosaurs' ears would have been tuned towards. Assuming this setting is low-magic, would it be possible to manufacture an instrument that made very low-frequency noise? If so, would it resemble a whistle or flute at all?