Using two LRADs emitting ultrasound to cause a difference tone, and some sort of laser range finder to observe oscillation and adjust a phase locked loop, it should be possible to resonate the bodies of people in a crowd at will.
as heinous as it'd be to implement this, I kinda want to try it. but that's how we've gotten into this pickle, in the first place.
Q is the quality factor, not the resonant frequency. It's the ratio of stored to dissipated energy, in other words the amount of "amplification" you can achieve by stimulating at the resonant frequency as opposed to the non-resonant frequency. It's never infinite unless you have a system whose oscillations dissipate no energy. In "squishy" systems Q tends to be rather low, and the effects of resonance rather muted. I would expect humans to have a low Q.
Using two LRADs emitting ultrasound to cause a difference tone, and some sort of laser range finder to observe oscillation and adjust a phase locked loop, it should be possible to resonate the bodies of people in a crowd at will.
as heinous as it'd be to implement this, I kinda want to try it. but that's how we've gotten into this pickle, in the first place.