Researchers discovered that jaw stiffness significantly impacts speech production, causing variability in motion as sounds are made. The study measured jaw stiffness and its effect on kinematic variability during speech production, revealing a relationship between the two.
Researchers at the Max Planck Institute developed a theory to explain lexical selection and form encoding in spoken word production. The theory proposes two major processing components: lexical selection and form encoding, which can be completed within two-thirds of a second.
Digital speech analysis tests can quantify signs of intoxication, such as jumpy pitch and energy changes. The test, developed by Georgia Tech researcher Kathleen E. Cummings, analyzes vocal cord movements during speech production.