The problem with the Brown Note is that it depends on hitting the resonant frequency of the abdomen of the intended target. As people are not considerate enough to grow in exactly the same dimensions or have the same elastic properties to their flesh, it varies from person to person.

Not to mention that the amplitude needed to cause such vibrations in the abdomen are so huge that they would likely smash all of the larger windows in the vicinity in the process, and would require woofers the size of Luciano Pavarotti's dinner plate connected to an amplifier powerful enough to project cannon shells through plate steel.
( The Resident Loon Not a demographic. Do not measure., Tue 29 May 2012, 19:43, 1 reply)

It also depends on the idea of an abdomen having a resonant frequency in the first place.
With all the gooey stuff slubbing around in there the damping factor is almost certainly going to be well over unity and in that case, chickabiddies, there ain't no resonance.
(ubergeekian, Tue 29 May 2012, 20:07, closed)

There can be an overall resonant frequency.
The catch is that it will vary from person to person, and also from condition to condition- did you eat recently? did you take a major shit? is your bladder full?

So there isn't a magic frequency that will work all the time, or even one that will work most of the time.

Too bad, as that could have some really interesting applications.
( The Resident Loon Not a demographic. Do not measure., Tue 29 May 2012, 22:52, closed)