The National Institute for Truth Verification (NITV) founder Charles Humble was awarded a second patent for his Computer Voice Stress Analyzer (CVSA II). The USPTO granted U.S. Patent # 7,571,101 for “Quantifying Psychological Stress Levels Using Voice Patterns” on August 4th, 2009. According to a recent article by Leonard Klie for Speech Technology, "The CVSA II accurately scores voice patterns for stress levels and then evaluates the entire examination to render a ‘No Deception Indicated’ or ‘Deception Indicated’ result, eliminating possible bias during the examination process. The solution, which allows for real-time or post-interview analysis, reportedly has an accuracy rating of more than 96 percent."
And in case you were wondering, what's the difference between this new machine and the old-fashioned kind? The new kind has no squiggly lines, it's software-based, and no you don't have to be hooked up to the machine. It can use a recording of your voice (even a phone recording) and determine if you were lying. Photo credit: Getty Images/Angelo Cavalli
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- Lie Detector or Polygraph Machine
John Larson invented the modern lie detector or polygraph machine in 1921.