From here:

Israel uses sound technology to disperse riot

JERUSALEM (AP) - The Israeli army has unveiled a new crowd-dispersal device emitting painful bursts of sound at a special frequency.

Military officials and witnesses say it was used to help break up a violent Palestinian demonstration.

Israeli military officials confirmed soldiers used a new "nonlethal" tactic in the West Bank village of Bilin, where hundreds of demonstrators rallied against Israel's separation barrier.

The officials, speaking on condition of anonymity, under army regulations, say the weapon uses special frequencies to disperse crowds.

An Associated Press photographer says a military vehicle arrived about a quarter mile from the demonstration and emitted several bursts of sounds. Although the sound was not loud, it caused people to cover their ears and grab their heads in discomfort.

They should modify it to be able to sonic blast buildings to death ;)

Wasn't there some Duck Tales/Tale Spin/some Disney cartoon episode with a bell that made huge fucking waves of sand with harmonic resonance?

Yes I knew it, from here:

TaleSpin - For Whom the Bell Klangs

Thadeos E. Klang uncovers the Legendary Lost City of Tinabula and, with the help of Katie Dodd, starts to bypass it's traps and securities. Meanwhile Baloo and Louie are lost in the desert, wandering about trying to catch up to Thadeos. When Thadeos finds the city's 'weapon,' a device that uses sound waves to create sand storms that can imbolize anything that gets in it's way. Soon Baloo and Louie save Katie, but are pursued by Scarabs and minions. Katie tells them that they need to ring 'The Master Bell' to end Klang's reign of terror. But they need to solve the riddles and puzzles that stand in their way.

BROWN NOTE!!!!

This is an old Israeli trick - who's heard of the biblical trumpets of Jericho?

"So the people shouted when the priests blew with the trumpets: and it came to pass, when the people heard the sound of the trumpet, and the people shouted with a great shout, that the wall fell down flat, Heb. 11.30 so that the people went up into the city, every man straight before him, and they took the city." Joshua 6:20.

Awesome, biblical weaponry!

Those trumpets got looted by the Romans, Augustus i think, along with a load of other biblical goodies.

Armenia has the Spear of Destiny.

yay! lets you and me go steal it ooby, then we can make Hitler's plan complete!

Deutschland uber alles!

Y'know, for a theoretically powerful artifact there sure are alot of those things.

You can see the continuing heritage of the trumpets of Jericho in modern aftermarket exhaust systems.

Yeah, but we've got the real one of course.

Speaking of biblical weaponry, who's heard about the USAF's "Rods from God" space weapon plan? I don't know how it would be any more useful than a regular nuclear weapon, personally, except that you can't shoot down a rod coming straight at you from space. Other countries could still retaliate in an old-fashioned atomic holocaust.

Well there's no fallout for starters, and it would be handy dandy against bunkers. It's basically a space based mass driver, and once again, computer games thought of it first.

hehe rod...shaft'd

Fallout depends on what they'll use to make it, eg depleted uranium for its density and therefore mass therefore speed.

Fallout would require an nuclear explosion, which I think this system would avoid.

but with deplete uranium u would still get a large amount of airborne radioactive material. Obviously not on the scale of a nuke (maybe a low yield bunker buster), but it will still seep into water supplies and linger in the atmosphere for years.

Poisoning their crops is part of the fun.

This thing would obviously require having the space-based missile shield up and running, because a Rod from God might simply end up triggering a nuclear response from the country concerned (if it has the bomb).

Dune 2 was such a good game, but I perfered the Harkonnen Devastator to the Atreides Sonic Tank.