What should I do if I don't want to be heard by others when I communicate with my peers in public places? Generally we will choose to whisper in the other party's ear. Researchers at the University of Bristol in the UK are developing a set of experimental equipment that allows two people, 30 meters away, to say "whispers."
The researchers said that as long as they put on the device and whispered what they wanted to say, even if they didn't say anything, they only used the corresponding mouth shape. The device could use ultrasound to transmit the words to the other party, and the recipient did not hear the sound. It will be great, just like someone whispering in your ear.
When using the device, one person first places a guiding loudspeaker on their forehead or chest and wears 4 electrodes around the lips . Using a technique called electromyography, the electrodes capture the person while talking. The signal of facial muscle formation. Wearing an eye tracker, the sound will travel in the direction of the wearer's eyes.
The device is said to help soldiers communicate without getting noticed by others. The device also helps divers to communicate over long distances due to the excellent propagation of ultrasound under water.
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