CVSA and other Voice Stress Analysis Applications CVSA and other Voice Stress Analysis Applications
Computer Voice Stress Analysis--another pseudoscientific form of "lie detection"--is used by some law enforcement agencies as an alternative to the polygraph. Other voice stress analysis products like Truster, Truster Pro, Handy Truster, and Layered Voice Analysis have also been promoted. But do they actually detect lies?
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CVSA Maker Admits Device Cannot Detect Lies!
The National Institute of Truth Verification, which markets the Computerized Voice Stress Analyzer (CVSA), has admitted in a court filing that their device "is not capable of lie detection." John Tuoh...

Started Nov 7th, 2004 at 12:24pm by George W. Maschke
« Pages 1 2 »
23 52000 Last Post Jun 3rd, 2012 at 5:12am
By: emmanuel4567 (Guest)
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      As informative as this site is, the posts will dissappear very quickly when others post. A good idea is to have page numbers at the bottom of each page with the previous pages of posts so the re...

Started Aug 31st, 2020 at 1:55am by lcrane
0 532 Last Post Aug 31st, 2020 at 1:55am
By: lcrane
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requiero informacion

Started Sep 30th, 2019 at 10:32pm by JAIRO MARTINEZ (Guest)
0 793 Last Post Sep 30th, 2019 at 10:32pm
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cvsa and the polygraph
So I found something interesting today, I was researching cvsa vs. Polygraph testing today because I noticed the CHP (california highway patrol) use cvsa and most California city departments use the p...

Started Jan 8th, 2014 at 7:44am by joe blow (Guest)
0 5076 Last Post Jan 8th, 2014 at 7:44am
By: joe blow (Guest)
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CVSA for sheriff's office position
† I, like many others, am nevous about taking a VSA. I would love to tell them no, but I am required to take it for the job. Honestly, my past isn't all that bad, but I do stress and overthink. My mai...

Started Oct 27th, 2009 at 2:39am by coopersmyboy
0 5024 Last Post Oct 27th, 2009 at 2:39am
By: coopersmyboy
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Question about the Lie Behind Lie Detector
I have to take cvsa really soon can you tell me what chapters I should read about first

Started May 30th, 2008 at 10:51pm by trophy
0 2306 Last Post May 30th, 2008 at 10:51pm
By: trophy
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Science, or Blinded By Science ?

For a a DOD technology to claim it is science, the process should be verifiable and produce identical
results time and again. There is simply no way t...

Started May 17th, 2007 at 2:34pm by 1904 (Ex Member)
0 2776 Last Post May 17th, 2007 at 2:34pm
By: 1904 - Ex Member
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CVSA Evaluation at a National Conference
I'll be attending the American Society of Criminology Conference in LA this week and came across this session:
Evaluating Voice Stress Analysis Software for Deception Detection 


I'm dismayed that this pseudoscience made it into my professional association's national conference and tha

Started Oct 30th, 2006 at 7:07pm by digithead
0 2615 Last Post Oct 30th, 2006 at 10:07pm
By: digithead
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Anti CVSA Article At
I found an interesting article on condeming the use of the CVSA.
Here it is:

Started Jul 14th, 2006 at 9:45pm by OfficerWannabe
0 2860 Last Post Jul 15th, 2006 at 12:45am
By: OfficerWannabe
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Forensic R&D Center for Polygraphy, CVSA, LVA,
International Forensic R&D Center
for Polygraphy, CVSA, LVA, EEG-based BrainFingerprinting, Remote Personnel Assessment
I would like to establish the above entity as an independent...

Started Jun 21st, 2006 at 8:56pm by Darius
0 2229 Last Post Jun 21st, 2006 at 11:56pm
By: Darius
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How to record CVSA example patterns ?
I would welcome your advice on how to record some voice example patterns for home-made Computer Voice Stress Analysis.
There are a number of voice example patterns on the net like those ...

Started Jun 19th, 2006 at 9:28pm by Darius
0 2260 Last Post Jun 20th, 2006 at 12:28am
By: Darius
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Brain fingerprinting...???
This topic has been moved to Polygraph Policy by Administrator.

Started Jun 7th, 2006 at 7:21pm by Irishgeek
0 2246 Last Post Jun 7th, 2006 at 10:21pm
By: Irishgeek
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Polygraph Place's Spotlight Examiner
I found this to be quite interesting given the polygraph community's disdain for CVSA, not to mention the disdain for CVSA shown by the polygrapher posters at  Click on the link an...

Started May 25th, 2006 at 3:51pm by day2day
0 2183 Last Post May 25th, 2006 at 6:51pm
By: day2day
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Finding Truth in a Vendor's Pitch (LVA)
Finding Truth in a Vendorís Pitch
By Lew McCreary
There might be no more pitiable predicament in life than being pitched a product that...

Started Feb 28th, 2006 at 2:53pm by George W. Maschke
0 3807 Last Post Feb 28th, 2006 at 5:53pm
By: George W. Maschke
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Nemesysco GK-1 Security Access Control System
Nemesysco Ltd., an Israeli company founded by Amir Liberman, who has previously marketed such quack technologies as the Truster and Truster Pro voice stress analyzers, is now promoting its so-called [url=]GK-1 Se

Started Nov 17th, 2005 at 5:46pm by George W. Maschke
0 5317 Last Post Nov 17th, 2005 at 8:46pm
By: George W. Maschke
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Over 100 Military CVSA Operators?
On 7 July 2005, the website published an article on CVSA titled, "Lie Detector's Shaky Story." In blog style, readers may post comments to articles, and a comment posted by "CW3 Bell, ...

Started Sep 5th, 2005 at 10:32am by George W. Maschke
0 2725 Last Post Sep 5th, 2005 at 1:32pm
By: George W. Maschke
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CVSA manufacturer agrees to settlement
The National Institute for Truth Verification has agreed to an out-of-court settlement with a man falsely accused of murdering his sister. †The accusation due largely in part to a CVSA examination.<br...

Started May 24th, 2005 at 4:45pm by Brandon Hall (Ex Member)
0 2512 Last Post May 24th, 2005 at 7:45pm
By: Brandon Hall - Ex Member
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CVSA currently in use
What is currently in use? If someone could grab the name/ version number of CVSA currently in use I would be much appreciative. Thank you.

Started May 10th, 2005 at 10:09am by tilde
0 2407 Last Post May 10th, 2005 at 1:09pm
By: tilde
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so cops do lie, smoke pot, and speed on roads
This topic has been moved to Off-Topic Posts by Administrator.

Started Nov 1st, 2004 at 9:16pm by compscigeek
0 2627 Last Post Nov 2nd, 2004 at 12:16am
By: compscigeek
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Passed the CVSA for LE hire
I had my CVSA this passed week and I passed!  Anyway, it was pretty textbook.  At first he went on to say that he was like a "priest" and that I could tell him anything that I did not tell my backgrou...

Started Jul 23rd, 2004 at 7:40pm by Jay (Guest)
0 3227 Last Post Jul 23rd, 2004 at 10:40pm
By: Jay (Guest)
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CVSA and other Voice Stress Analysis Applications

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