I’ve been trialling a top-secret sonic weapon, against the local kids who hang around outside the shops below, making noise. Basically, very high-frequency sounds above 16KHz, that I can’t hear, played through my hi-fi, at loud volume. Continuous tone was not very effective, but an 18/16KHz pulse seems to be quite good. A mate of mine is looking into having someone at his work rig up a 40-watt system, that can be placed out on my balcony, and operated from inside.
Of course, this is no good for you, as you have a little one who will hear it, but simliar systems have proven to be very effective; kids can’t stand the noise, and bugger off. Everyone who’s older, is not at all affected by it. My neighbours are observing the trials with great inertest.
Such devices do of course violate children’s Human Rights. Sonic weapons are banned under the Geneva convention.
This is not Geneva, however… 😈