Why does inhaling helium make one’s voice sound funny?


Answer. Posted on Sunday, December 28, 2014.

The helium does not affect the vocal cords. The helium has a smaller density than air, and as a result, sound travels over twice as fast through helium than through the air. Thereby, the acoustic properties of the vocal tract change so that it amplifies higher-frequency tones.

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3 thoughts on “Why does inhaling helium make one’s voice sound funny?

  1. It isn’t just Helium.

    The voice sounds different because
    the vocal chords are, if not frozen,
    very cold after inhaling the Helium,
    because the Helium is frozen
    to contain it.

    Although Helium is the usual gas used,
    this will work with any gas,
    but is only safe with
    inert gases which wont react with
    anything in the body.

    Like

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