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A sensor that recognises voice accurately

01:30 PM Jun 26, 2019 |

Seoul: Scientists have developed a flexible and wearable sensor that can precisely recognise voice through vibration of the neck skin. A voice-recognition feature can be easily found on mobile phones these days.

However, we often experience an incident where a speech recognition application is activated in the middle of a meeting or a conversation in the office.

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Sometimes, it is not activated at all regardless of numbers of times we call out the application. This is because a mobile phone uses a microphone which detects sound pressure to recognize voice, and it is easily affected by surrounding noise and other

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obstacles.

Researchers from Pohang University of Science and Technology in South Korea have successfully developed a flexible and wearable vibration responsive sensor.

When the sensor is attached to a neck, it can precisely recognise voice through vibration of the neck skin and is not affected by ambient noise or the volume of sound.

The conventional vibration sensors recognise voice through air vibration and the sensitivity decreases due to mechanical resonance and damping effect, therefore are not capable of measuring voices quantitatively.

The device, which is consisted of an ultrathin polymer film and a diaphragm with tiny holes, can sense voices quantitively by measuring the acceleration of skin vibration

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