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Reading a CVSA Chart: How Voice Frequencies Translate to the Page

Reading a CVSA Chart: How Voice Frequencies Translate to the Page

by admin | May 8, 2017 | Science

Recent advances in law enforcement technology abound, which can sometimes make officers wary about whether these innovations really work. One newer technological advancement is the Computer Voice Stress Analyzer (CVSA), which makes it possible to identify signs of...
A Guide to Using CVSA Block Scores to Detect Inaudible Voice Stress

A Guide to Using CVSA Block Scores to Detect Inaudible Voice Stress

by admin | May 4, 2017 | Science

You’re in the thick of it—sitting in a small, quiet interview room, examining a suspect in a tough case. Every question is answered with incredible ease, but you worry there is something beneath the surface you aren’t quite able to reach. Are you being deceived? After...
The History of Voice Stress Analysis: The Original Dektor Counterintelligence and Security Inc.

The History of Voice Stress Analysis: The Original Dektor Counterintelligence and Security Inc.

by admin | May 1, 2017 | History

Everything we knew about “lie detection” changed in 1972. That was the year Allan D. Bell, Jr., Wilson H. Ford, and Charles R. McQuiston—the three principals of Dektor Counterintelligence and Security, Inc.—came up with something brilliant. The retired U.S. Military...
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