Funny stories about mobile phones, their unusual functions may surprise you

7.   To make a call silently(buyvertureplica.com)

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Reason for selecting: a voice is all it needs for verbal communication and you say all when you say nothing at all
This device is invented by Advance Research Project Agency of the U. S. Department of Defense (DARPA). It is said that the device can detect what the speaker want to say through the person’s nerve and muscle movement and therefore the speaker doesn’t have to make a sound at all.
This function is carried out by the Tune Electromagnetic Resonance Collar (TERC) around the speaker’s neck. It is a sensor using the sensing technology specially designed for magnetic resonance imaging and this collar can detect the change in capacitance caused by the vibration of vocal cords.
Besides, DARPA has bought a device developed by NASA Armstrong Laboratory which includes a electrode named electro-sensor that is put around the speaker’s neck and can detect the resistance variation during the call and then a private network would then process the data and confirm the discourse mode, even silent reading can be detected. The discourse mode will later be sent to the computer’s voice generator to restitute the caller’s voice.

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