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By adjusting the tension in the vocal chords.
The pitch of someone's voice is controlled by the tension on the vocal chords
It can stick to the vocal chords and change the pitch at which they vibrate.
Your vocal chords are tense during the inhalation
Animals DO have vocal chords.
i think vocal chords work when the flaps of the vocal chords are pushed together to make a noise, then your mouth forms it into words.
Humans have one pair of vocal folds. They are really not called chords.
The lead singer of Avenges sevenfold tore is vocal chords and he did need surgery.
Vocal Chords
with their vocal chords
Your vocal chords.
Conure Parrots do not have vocal chords like a human. Conure Parrots have vocal folds in a structure called the syrinx, not in the laranyx like a humans does.