Pitch is the perceptual quality of how high or low a voice sounds, determined by the frequency of vocal fold vibration. It varies with age, sex, and physiological factors. Abnormal pitch can indicate voice disorders, hormonal changes, or motor speech issues. SLPs assess and treat pitch to ensure healthy voice function and appropriate prosody.
American National Standards Institute. Acoustical Terminology. ANSI S1.1 (1994).
Borchert, Elizabeth M. O., Micheyl, Christophe, and Oxenham, Andrew J. "Pitch Perception and Grouping." Journal of Experimental Psychology: Human Perception and Performance 37, no. 1 (2011).
