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knowledge on Instagram: "• A choir used helium balloons to sing a high note beyond the normal vocal range. • Helium doesn’t change the voice source — it changes the sound transmission. • Vocal cords vibrate at the same fundamental frequency. • Helium is much less dense than air. • Sound travels faster through helium. • Faster sound speed shifts vocal resonant frequencies upward. • The formants move higher, creating a cartoon-like pitch effect. • The brain perceives the voice as higher even thoug
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knowledge on Instagram: "• A choir used helium balloons to sing a high note beyond the normal vocal range. • Helium doesn’t change the voice source — it changes the sound transmission. • Vocal cords vibrate at the same fundamental frequency. • Helium is much less dense than air. • Sound travels faster through helium. • Faster sound speed shifts vocal resonant frequencies upward. • The formants move higher, creating a cartoon-like pitch effect. • The brain perceives the voice as higher even thoug
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