The sounds are the same pitch, but their tone aka sound quality or timbre are different. The human voice is made up of many different tones mixed together. At the same time, it makes the lower tones resonate less in the vocal tract.
The two effects combine to create a Chipmunk-like, flat sound. In a room where the temperature is 68 degrees Fahrenheit, sound travels at meters a second through air, but meters a second through helium. When you inhale helium, you're changing the type of gas molecules in your vocal tract and increasing the speed of the sound of your voice.
Some people think that helium changes the pitch of your voice, but the vibration frequency of the vocal cords doesn't change along with the type of gas molecules that surround them. When your vocal tract is filled with helium, your vocal cords are vibrating at the same frequency as usual. It's actually the timbre again, the quality of a sound that distinguishes different types of sound, also known as tone quality or tone color that changes, because those lighter-than-air helium molecules allow sound to travel faster and change the resonances of your vocal tract by making it more responsive to high-frequency sounds and less responsive to lower ones.
Your voice winds up flat and Donald Duck-esque and listeners perceive this as a change in pitch. If a lighter gas like helium gives us a squeaky-sounding voice, you might to assume that a heavier-than-air gas would amplify the lower resonant frequencies and make it deeper and richer trading Donald Duck for Barry White, if you will. You'd be correct; gases like xenon and sulfur hexafluoride slow the speed of sound and lower the resonant frequencies of your vocal tract.
First, here's what's happening inside your throat when you talk: According to acoustics expert John Smith, a biophysicist at the University of New South Wales UNSW in Sydney, Australia, you generate sound by rapidly vibrating two small flaps of mucous membrane, called vocal folds, in your voice box.
The back-and-forth motions of these folds interrupt the flow of air from your lungs to create "puffs" of sound. If your vocal folds wiggle back and forth times each second, they produce puffs with a frequency of beats per second Hz. Additional motions of the vocal folds, such as collisions with each other, generate additional frequencies that are multiples of that fundamental frequency: "harmonics" at Hz, Hz, Hz and so on. All these frequencies travel together through the vocal tract — the tubelike cavity leading from the voice box up through the throat and mouth to the outside world.
Depending on its shape, this tract resonates with certain harmonics generated by your vocal folds, meaning it vibrates in time with them. Jun 14, Usually people do it to be funny. Isaac Jan 26, Jan 27, Karter Dec 8, I don't need helium to talk in a high pitched voice because I learned how to do it.
Dec 9, Neat, Karter! Do you like to do impressions or talk in funny ways? Oct 17, Shamar Jun 17, Jun 17, May 31, Alyanna Mar 3, What date did you make this article about Helium, i need it for my project in school.
Mar 4, Aubrey muck Jan 4, Jan 5, Aubrey muck Dec 17, Dec 17, Hi, Aubrey muck! We're glad you liked this Wonder! Visit again soon! Ed Dec 1, Dec 2, Harlee W. Dec 12, I love sucking air out of a bollon becouse its so funny when you do it makes your voice funny do you like making funny sounds. Wonderopolis Dec 12, That's funny, Harlee W.!
Thanks for sharing with us! Samantha Dec 1, If we breathed in a lot of helium mixed with air would it hurt us???????? Wonderopolis Dec 2, Emma Williams mrs. Mason's cla Nov 26, This is an awesome wonder Wonderopolis! On my 5th birthday, my dad sucked in helium and he said "hello everybody! And on my step sisters birthday, we got to take six balloons home and then I sucked in the helium from the balloon. It almost felt like I was having laughing gas.
Wonderopolis Nov 28, Joey Morris Nov 20, This is a question from my 5th grader named Miles Wonderopolis Nov 20, Kamren Nov 20, Hi, I was wondering about global warming.
We are studying about water conservation in class and i was wondering about global warming like "How did it originally start, how its effecting us now and what we could do to help it not get any worse. I was also wondering if we could stop global warming by changing our actions or by technology?
Hope you get my question :] -Kamren. Ashton Nov 20, Anthony Nov 18, How come helium is so dangerous?????????????? Wonderopolis Nov 19, Gabe M Nov 18, Is there any other kind of air that can change your voice? Wonderopolis Nov 18, How can you die from to much helium????????????? Tamia Nov 18, M Nov 18, Thank you wonderopolis i wonted to know this! Simon C Nov 18, If I have a balloon I will usually do it, but not always because it can be harmful. Simon C. Grace Nov 18, Sean M Nov 18, Why does helium make balloons float up then POP.
Is there anything else that changes your voice by breathing it in. Michael Krieger Nov 18, Abby T Nov 18, I have never put a balloon in my mouth before unless its to blow it up. Have you ever sucked in the air before?
If so does it tickle when you talk in a funny voice? Eden Nov 18,
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