Speech Jammer Brings Talkers' Brains to Stuttering Halt

Silencing Technology
A diagram shows how the speech jammer (pictured bottom right) might work.
(Image credit: Kazutaka Kurihara | Koji Tsukada)

Some people never know when to shut up during meetings, movies or while yammering away on the phone at public libraries. Now Japanese scientists have come up with a portable speech-jamming gun that forces obnoxious talkers to come to a stuttering halt.

The "SpeechJammer" device uses a direction-sensitive microphone and speaker to silence talkers with their own words — a psychological trick that creates a delay between the time talkers speak and the time when they hear the words coming out of their mouths. The hearing delay trips up the brain's thinking processes and causes the person to stutter.

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