Analysis of Male Singers Laryngeal Vertical Displacement During the First Passaggio and its Implications on the Vocal Folds Vibratory Pattern

The results show a significant difference of scores for the formants transition, VFCA, and vocal tract length suggesting that the larynx lowers after the passaggio. This displacement of the larynx is associated with changes on the vocal folds vibratory pattern conjecturably altering from essentially isotonic contraction of the thyroarytenoid muscle to isometric contraction.