Computerized Voice Stress Analysis ?

A recent advertisement asks "How many bad decisions have you made based upon a lie?" Furthermore, "lf a Person Has the Right to Lie to You, Do You Have the Right to Detect That Lie?" One new lie detector, based on computefized voice stress analysis offers to help with such problems. It "detects, measures and charts the stress in a person's'voice instantaneously, with or without the person's knowledge." When a person lies, they usually experience increased stress. Conventional polygraph lie detectors utilize changes in pulse rate, breathing patterns, galvanic response and other physiologic changes to identify false statements. According to the manufacturer, lying is also accompanied by a tightening of the vocalcords and subtle subaudible changes in the voice. The Computer Voice Stress Analyzer can detect these changes. The seventeen-pound evice, which comes in a five-inch briefcase, can be connected to a telephone line or used with a taped or live conversation.