What device is used to detect deception through stress recorded by voice modulations?

The psychological stress analyzer is a device that specifically measures stress through voice modulations. This technology analyzes the vocal patterns and characteristics of a person’s speech to identify stress levels that may indicate deception. It operates on the premise that when a person experiences stress, which can occur when they are not being truthful, it may manifest in their voice, such as through changes in pitch, tone, or other vocal elements.

In contrast, while the polygraph and lie detector terminology often refer to similar deception detection methods, they typically focus on physiological responses, such as heart rate, blood pressure, and respiration. Truth serum refers to barbiturates used to lower inhibitions, but it's not a device for detecting deception based on voice analysis. Thus, the psychological stress analyzer is the most appropriate choice for detecting deception specifically through voice modulation and stress indicators.