Voice Stress Detection: A method for stress analysis detecting fluctuations on Lippold microtremor spectrum using FFT

Stress detection in voice gives a great alternative for obtaining a noninvasive way to extract information about a possible deception from a person declaration. This article contains information and results of a primary work done to show how changes in Lippold microtremor can be detected through FFT signal processing when a person is under psychological pressure. The principal purpose is to obtain a tool that could help innocent people to prove their guiltlessness of having committed an offense or a crime.