Speech-Jammer Gun Invented in Japan

 

 

 

Imagine sitting around a conference table with several of your colleagues as you hold an important meeting. Now imagine your boss pulling out what looks like a radar gun for catching speeding motorists and aiming at any of you that speak to long, very nearly instantly causing whoever is speaking to start stuttering then mumbling and then to stop speaking at all. That’s the idea behind the SpeechJammer, a gun that can be fired at people to force them to stop speaking. It’s the brainchild of Koji Tsukada and Kazutaka Kurihara, science and technology researchers in Japan. They’ve published a paper describing how it works on the preprint server arXiv.

The idea is based on the fact that to speak properly, we humans need to hear what we’re saying so that we can constantly adjust how we go about it, scientists call it delayed auditory feedback. It’s partly why singers are able to sing better when they wear headphones that allow them to hear their own voice as they sing with music, or use feedback monitors when onstage. Trouble comes though when there is a slight delay between the time the words are spoken and the time they are heard. If that happens, people tend to get discombobulated and stop speaking, and that’s the whole idea behind the SpeechJammer. It’s basically just a gun that causes someone speaking to hear their own words delayed by 0.2 seconds.

To make that happen, the two attached a directional microphone and speaker to a box that also holds a laser pointer and distance sensor and of course a computer board to compute the delay time based on distance from the speaker. To make it work, the person using it points the gun at the person talking, using the laser pointer as a guide, then pulls the trigger. It works for distances up to a hundred feet.

The two say they have no plans to market the device, but because the technology is so simple, it’s doubtful they could patent it anyway.

http://www.physorg.com/news/2012-03-speechjammer-gun-quash-human-utterances.html

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s