What is the effect of increased tension in the vocal folds?

Increased tension in the vocal folds leads to a higher pitch because the vocal folds vibrate at a faster rate. When the tension is applied, the length of the vocal folds increases and they become stiffer. This combination allows the folds to vibrate more quickly during phonation. The fundamental frequency of voice, which is perceived as pitch, is largely determined by the mass, length, and tension of the vocal folds. When tension is raised, the stiffness enhances the vibrations, resulting in a higher frequency sound or pitch. This principle is fundamental in understanding the mechanics of voice production and is crucial for effective communication and voice modulation in various contexts.