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Voice Stress Analysis records psychophysiological stress responses in a human voice. It is a technique used to tell if a person is lying or not by making voice analysis

A person has psychological stress when he is under pressure. The consequences of lying and being exposed triggers a voice stress analyzer the high stress voice signature as a lie.

Many law enforcement agencies across the world are now using VSA technologie because it is easier to use than a polygraph and is less expensive. X13-VSA PRO Cobra technology is a scientific measure that law enforcement use as a tool to tell when someone is lying and it has a 98 percent success rate.

The voice stress analyzer X13-VSA (VSA) is sufficient to prove both validity and reliability.

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