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The Chipmunk Effect What causes the change in pitch when Helium (Nitrogen, Chlorine, Oxygen, Sulfur hexa-fluoride. ..) is used in speech instead of dry air? Because frequency and resonance does not change, I found that the wavelengths change when other gasses are used in speech.
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Unformatted text preview: Is it possible to repeat these experiments using only a change in frequency or is there an underlying factor? It is not possible to repeat helium voice experiments based solely on frequencies....
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