How is the tightness of your vocal chords related to the pitch of your voice?

The tightness of your vocal cords, or vocal folds, directly influences the pitch of your voice. When the vocal cords are tightened, they vibrate faster, producing a higher pitch. Conversely, when they are more relaxed, they vibrate more slowly, resulting in a lower pitch. Thus, the tension and length of the vocal cords play a crucial role in determining the frequency of the sound produced.