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Voice is created by air being pushed from the lungs through your larynx, aka voicebox, and then resonance is altered by other parts of your head that move and or vibrate (mouth, nose, neck). The pitch of your voice is controlled mostly by the larynx. When the larynx is smaller, it makes a higher pitch; while a larger larynx makes a lower one. This is why children have higher voices than adults.

During puberty, when the larynx is making its most rapid growth spurt, the larynx can spasm and cause unintended pitch changes.

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9y ago
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15y ago

Your vocal cords are tightened from the strain, causing a higher frequency vibration

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