Which factor contributes to creating greater loudness in vocalization?

Increased airflow and pressure play a crucial role in generating greater loudness during vocalization. When a person vocalizes, the air from the lungs passes through the vocal cords. By increasing this airflow, the pressure beneath the vocal cords, known as subglottal pressure, is also increased. This heightened pressure forces the vocal cords to vibrate more vigorously against one another, resulting in a stronger and louder sound. Essentially, the amount of air that passes through and the pressure exerted maximizes the intensity of the sound produced, contributing significantly to the perception of loudness.

In contrast, factors such as the durability of the vocal cords, glottal pressure, or the mass of the vocal folds do not directly influence loudness in the same way that airflow and pressure do. While they may affect the quality and tone of the voice, they are not the primary contributors to increasing loudness during vocalization.