If you go with the phrase silence is golden and at times if you want others around you to kindly shut their mouths then this can be done with the help of a newly invented device known as Speech-Jammer. If you think deeply you will realize that librarians could do this with a frown and a gesture and probably in the coming future Speech-Jammer will help in hacking into the offender’s cortical implants. As for now, this is the state of the speech-suppression art. You might be familiar with that odd echo when your speech is played back to you immediately after you’ve spoken. It happens sometimes on conference calls, speakerphones, and sometimes while speaking in a football stadium.
Invented by a couple of scientists in Japan, the Speech-Jammer prototype is a handheld device that looks a lot like a radar gun which is used by the cops to catch you for speeding. It’s fully capable of “disturbing” speech from as far as 100 feet away. The idea behind the making speech-jammer is to use the well-known phenomenon of “delayed auditory feedback”. This phenomenon helps to interfere with the speech production process of people that the wielder of Speech-Jammer finds annoying and it is based on an established psychological principle that it is well-nigh impossible for folks to speak when their words are played back to them just after they’ve been uttered. This effect does not involve anyone but the speaker. In general, human speech is jammed by giving back to the speakers their own utterances at a delay of a few hundred milliseconds.
By plugging a telephone headset into the playback jack, a person’s voice may be returned to his own ears but delayed by the length of time the tape requires to move from one magnet to the next. The effect of this delayed and dominating echo is baffling and it will cause the person to stutter, slow down or stop completely. However, Speech-Jammer is not the first sound-based crowd-control technology. Earlier there were devices like The Mosquito, which uses high frequencies to deter teenage loitering or the Long Range Acoustic Device (LRAD) which produces painful tones over long distances and unlike them, Speech-Jammer is able to disturb people without any physical discomfort. The device does not stop them talking permanently, it is just that they become so confused; they can’t finish their sentence and begin to stutter or just shut up. Though perhaps use of the Speech-Jammer counts as assault or some other legal offense.