an tool which identifies minute alterations in the voice, that the human ear cannot hear, which supposedly happen whenever an individual is under distress. It is, at times, utilized as a lie detector, however, its dependability and validity are highly debated, and the results are not approved as a form of evidence in a multitude of United States courts of law.
VOICE-STRESS ANALYZER: “Voice-stress analyzer tests are often used by police officers when investigating a suspect, but the evidence is not often permitted in judicial trials.”