Are you sick of listening the loud voice of your seatmate or your boring teacher discussing how to become a superman? Wish to have a silent and ready-to-sleep environment? This is the thing you must have.

Introducing the Speech Jammer. This device could mute even the loudest talkers. By deactivating someone's voice without knowing is the power of this device. Don't worry, I doesn't cause any physical harm nor alters the person's voice for life. Instead, it operates on a phenomenon called "delayed auditory feedback", wherein a microphone attached on the device picks up the speech and plays it back with a delay of 200 milliseconds. There will be an echo effect that causes the person's brain to become disoriented and it will shuts down the region that responsible for speech.



According to SmartPlanet
“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.”

This device is currently made in Japan (based on the video below)and the investors don't plan to patent this technology because it's simple to make.