For example how helium makes your voice higher, and some other gases make your voice deeper. How does that happen? Why do different gases cause different effects?
In: Biology
Because the gases are either heavier or lighter than air, and air is what we are used to the sound waves vibrating through. Helium is lighter than air, and so the sound waves travel faster through it while resonating in your larynx
It actually doesn’t really do anything to your vocal cords. Your vocal cords are still vibrating at the same frequency. What helium changes is the timbre of your voice, because it’s much lighter. Like, you can play the same note on two different instruments, and you can still tell the difference between the two instruments. Think of your voice like multiple instruments playing together. While all of the instruments usually have a certain balance, inhaling helium is sort of like moving the microphone really close to the violin so it drowns out the other instruments.
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