Vancouver police have a new crowd control device capable of emitting painfully loud blasts of sound, just in time for the 2010 Winter Olympics, CBC News has learned.
The medium-range acoustic device (MRAD) can use sound as a weapon, emitting piercing sounds at frequency levels that cross the human threshold of pain and are potentially damaging to hearing, say audio experts.
But it is primarily designed as a communications device that's clearly audible up to a kilometre away, say police.
Stumble It!
This device seems similar to one the Israeli's used on Palistinians and settlers back in 2005. And I'm going to use a Fox clip just because of the Afghan argument we're having in another thread.
http://www.foxnews.com/story/0,2933,159127,00.html
Seems that the "Scream" uses low amplitude sound... so earmuffs or plugs won't work as it is like bass speakers pounding at you. The sound would carry right through you, which is why it affects the inner ear and makes you nauseas. So yeah, you'll hear it a kilometre away, but I fail to see how this is a "communication device". Unless what you are trying to commuincate is "get out of here terrorist protesters" (just throwing in a Harry Bloy since I'm already mixing threads).