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‘Silence gun’ leaves talkers speechless — literally

By | March 6, 2012, 6:44 AM PST

Wish you can silence that annoying person yapping off on a cell phone? Now scientists have figured out a way to make it happen with a mere push of a button.

With a device called the Speechjammer, users can mute even the loudest talkers. Deactivating someone’s voice without their consent is some serious stuff. But the silence gun doesn’t cause any physical harm nor alters the person’s voice in any way. Instead, it operates on a phenomenon called delayed auditory feedback wherein an attached microphone picks up the speech and plays it back with a delay of 200 milliseconds. The echo effect causes the person’s brain to become so disoriented that it literally shuts down the region responsible for speech.

“This effect can disturb people without any physical discomfort, and disappears immediately [after] the speaking stops, ” wrote the researchers in a report. “Furthermore, this effect does not involve anyone but the speaker. It is expected that the negative aspects of speech…can be relaxed by the ability to jam remote people’s speech.”

The inventors, however, don’t plan to patent the technology because it’s relatively simple and there’s almost certain that some company will come out with market-ready product. And to demonstrate how such a device can come in handy, they recently released video that the silence gun can be used to ensure people can study in libraries without being disturbed or to put a stop to that endless mindnumbing lecture (although I’m sure they were just being a bit cheeky).

Still, I can imagine it’s also the kind of technology some people would use on themselves just for kicks.

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Tuan C. Nguyen

About Tuan C. Nguyen

Tuan C. Nguyen was a contributing editor for SmartPlanet from 2011 to 2013.

Tuan C. Nguyen

Tuan C. Nguyen

Contributing Editor

Tuan C. Nguyen is a freelance science journalist based in New York City. He has written for the U.S. News and World Report, Fox News, MSNBC, ABC News, AOL, Yahoo! News and LiveScience. Formerly, he was reporter and producer for the technology section of ABCNews.com. He holds degrees from the University of California Los Angeles and the City University of New York's Graduate School of Journalism.

Follow him on Twitter.

Tuan C. Nguyen

Tuan C. Nguyen

Tuan C. Nguyen does not hold any investments in the technology companies he covers.

He writes for SmartPlanet and is not an employee of CBS.

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0 Votes
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So many uses.
Do not get me started on the many possible uses of this in the average household.

Where can I put this on my next wedding registry? Best Buy?
Posted by Hates Idiots
7th Mar 2012
+2 Votes
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RE: many possible uses
Don't even let me get started.

In an office of gabbing females, ............
Posted by fatman65535
14th Mar 2012
+2 Votes
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Used this technique over 40 years ago
While in college during the late 1960s, I was an engineer at a radio station. As a practical joke we would intermittently switch the audio feed to a DJ's headset from live audio to a short delay (created with a tape recorder equipped with separate record and playback heads). The result was normal speech interspersed with periods of stammering gibberish. The DJ could not understand why he could not make the words come out of his mouth. If he would remove his headset, the problem would disappear.
Posted by abaran@...
13th Mar 2012
-1 Votes
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BOSE uses in all products
Almost all of noise cancelling headsets and speaker sets uses this technology. Its not a lot new concept they just managed to do it from a distance to cancel the noise as BOSE uses in its head sets.
Posted by santosh0047
13th Mar 2012
0 Votes
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not the same
You mean noise-cancelling. That's when the headphone produces a counter audio wave to cancel out unwanted ambient sounds. This audio is not the same as the audio that was picked up by the mic bu it consists of a wave that's the exact opposite.
That's not what happen's here: this is just the same audio, replayed with a little delay. The sound waves aren't cancelled out, instead the brain of the speaker gets fooled which eventually convinces him to stop talking.
Posted by belli_bettens@...
14th Mar 2012
0 Votes
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Where...
...can I buy one or two? I need a couple of those...
Posted by TiagoViana
14th Mar 2012
+1 Vote
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Sounds like a promising app for a smartphone
Sounds like a promising app for a smartphone.

Anybody ???
Posted by jgb_z
14th Mar 2012
0 Votes
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How about the Republican debate?
This would be perfect to use at the debates. Everytime one of the candidates opened their mouth, they could be stopped in their tracks.
Posted by sajohnston@...
Updated - 14th Mar 2012
0 Votes
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RE: candidates opened their mouth
Can you image one of these things being used in Congress???

The possibilities boggle the mind.

Imagine being able to silence a `blowhard` politician.
Posted by fatman65535
14th Mar 2012
0 Votes
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Done that
Judging from what I've seen, it's already been used on certain a politician in the pass.
Posted by laBaronRouge
27th Mar 2012
+1 Vote
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Congress, Senate, Courts, State of the Union speech or sales pitch!
Now if they could have it activated by a lie detector, that would be something!
Posted by Alan.craig1499@...
14th Mar 2012
0 Votes
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patenting
they might still want to patent it - if only to keep someone else from patenting it (is there such a thing as an open patent?)
Posted by blackweaver
15th Mar 2012
-2 Votes
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Posted by gogorose2
23rd Mar 2012
0 Votes
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Imagine...
...using it on Telemarketers.
Posted by Uncle Stoat
27th Mar 2012
0 Votes
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Silencer
Wow, I bet the rapists will be lining up to get this little number. Victim can't call for help so there's one problem solved.
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27th Mar 2012
-2 Votes
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2nd Apr 2012
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