VOICE STRESS TESTING
Voice Stress Analysis - Truth Verification (Lie Detecting)
Computer based Voice Stress Analysis (VSA) is the latest in Polygraph technology. Making use of digital, state-of-the-art technology to verify if someone is telling the truth or a lie. By analyzing the “micro-tremors” in your voice, this non-invasive (no electrodes attached) space-age technology produces conclusive results in lie detection and truth verification.
Voice Stress Analysis differs vastly from traditional polygraph testing in that it uses non-hostile techniques, where there are no known counter measures to “beat” a test. Voice Stress Analysis is completely safe to use and is not hindered by drugs, alcohol, age, health or pregnancy.
Over 15000 Voice Stress Analysis systems are currently in use worldwide today. More than 2500 U.S. law enforcement agencies use Voice Stress Analsis as their choice system for truth verification and The U.S. Department of Defence uses Voice Stress Analysis in its fight against worldwide terrorism; all of which give a clear indication on effectiveness and approach.
In South Africa there are many organisations using Voice Stress Analysis (VSA):
> Security Companies
> Private Investigators (PI's)
> Corporate Sector
> Private Sector
Voice Stress Analysis / Detection vs. Polygraph
The Polygraph has become a household term, having widespread exposure in film and TV when compared to voice stress analysis. Film and media prefer using the “old” technology of Polygraphs as it uses an analogue format more visually effective with needle and ink printing / display. Polygraph technology is over 80 years old and our experience is that most of the industry is moving away from traditional Polygraph testing methods to the new digital Voice Stress Analysis method as it offers a more hygienic, non-invasive, less intimidating and more subject friendly approach to truth verification.
Factual Comparisons Between Voice Stress Analysis & Polygraph Testing
Polygraph Testing
Intrusive physiological attachments (painful at times)
Old science (80 years)
Countermeasures Attempted
Hostile Techniques
30-60% “Inconclusive” Results (Examiner dependent)
Drugs, Age & Health can skew results
“YES” & “NO” Answers required
Must sit motionless
Totally Analogue or with Computer to display Charts
Voice Stress Analysis
No Attachments
Modern science with space age technology.
ONLY Countermeasure is Silence
Non Hostile Techniques
No “Inconclusive” Results
Not affected by Alcohol, Drugs, Age or Health
Narrative answers acceptable
Unrestricted movement
Totally Digital (64 bit). Proprietary algorithms.
