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Polygraph Prototype (Final Design Project)
Posted January 20, 2014 by Chris
"For our design project we constructed a polygraph which measured pulse rate, GSR, and breathing rate, and performed a discrete cosine transform on the subject’s voice in the hope of measuring a deviation in the fundamental frequency. The measurements were sampled, analyzed, and transmitted to a computer for further analysis using an ATMEL AVR Mega32 microcontroller."
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