The U.S. military has gotten serious:
The US military has acquired an arsenal of "sonic bullets" for use as non-lethal weapons. One plays backward the sound of a baby crying at 140 decibels, well above the threshold of pain.
From the FT’s review of the new book Manifesto for Silence, which says silence is a crucial and threatened commodity.
I wonder why it’s with a baby crying backward? In any event, I have a hard time keeping my sanity when just one baby cries at a normal level on an airplane.