ILTS Speech-Language Pathologist (SLP): Nonteaching (232) Practice Test

Vocal pitch is primarily determined by the frequency of the vibrations produced by the vocal folds during phonation. This frequency is measured in cycles per second, referred to as Hertz (Hz). When the vocal folds vibrate, the number of vibratory cycles that occur within one second directly correlates to the pitch that a listener perceives. A higher number of cycles per second results in a higher pitch, while a lower number indicates a lower pitch. Understanding this relationship is crucial for speech-language pathologists when assessing and addressing voice disorders, as pitch is a fundamental characteristic of vocal quality and can be affected by various factors, including vocal fold health, tension, and control.