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The Truth Machine and Lie Detector
Who is Telling The Truth and Who is Lying???
For many years scientists have attempted to develop a successful lie detector. In the seventies American researchers developed the Psychological Stress Evaluator (PSE) and the Voice Stress Analyser (VSA). These two principles have now been synthesised in the Truth Machine.
Micro tremors in the voice which are often not detected by the human
ear1 produce frequency modulations which are measured. The amplitude
of the upper and lower sidebands from voice modulations is also
monitored. The results are analysed and shown visually by the columns
of LED lights which range from green (low tension) to red (high tension).
The Truth Machine accurately measures changing stress levels in the voice but as each individual's voice reacts differently it is not infallible; the lighting of red LED's, high stress, is indicative of lying however! Not only is the Truth Machine great fun when used in general conversation but can also be tested against the TV and even connected to the telephone.
It measures 16cm x 13cm. A 9v battery is required.
The Truth machine
Click image to enlarge
(56K)
XXXX-TD3
