Beyond Verbal, a Tel Aviv - based startup, for one, uses technology to analyze vocal intonations to determine a person's mood. (inc.com)
For example, when baby is laying on the diaper - changing table, talk to him using a lot of exaggerated vocal intonations and facial expressions. (readingbrightstart.org)
The team members themselves have already found a clinical application for the program: to study how words are interpreted by survivors of a stroke, an event which can alter how they perceive vocal intonation. (sciencedaily.com)