Japanese researchers have developed a “speech-jamming gun”.

It works without maiming or killing you, but it does mess with your mind. Will it be a boon to movie-goers, or a free-speech killer? And how does it work?

Linguist Daniel Midgley will explain as fluently as possible on this episode of Talk the Talk.


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Here’s an article:
http://www.gmanetwork.com/news/story/250200/scitech/technology/speech-jamming-gun-developed-by-japanese-reasearchers

This one has pictures:
http://www.extremetech.com/computing/120583-new-speech-jamming-gun-hints-at-dystopian-big-brother-future

Video!
http://www.wired.com/underwire/2012/03/japanese-speech-jamming-gun/

Here the “reverse-wave” idea, but for buildings.
http://www.youtube.com/watch?v=4BRYrD1wY5w

And another effort.
http://www.newscientist.com/article/dn2094-silence-machine-zaps-unwanted-noise.html