voice-stress analyzer

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voice-stress analyzer

technology

Also known as: VSA

Learn about this topic in these articles:

lie-detection techniques

In police: Lie detectors
Voice-stress analyzers (VSAs), which became commercially available in the 1970s, rely on the detection of minute variations in the voice of the subject. Advocates of voice-stress analysis contend that inaudible vibrations in the voice, known as microtremors, speed up when a person is lying. During…
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