ohow does helium cause voice change when suck in from a balloon?

Answer 1

Because helium alone is less dense than atmospheric air, it will change the timbre of a person's voice when inhaled. This is because the speed of sound in helium is nearly three times that in air. As a result, when helium is inhaled there is a corresponding increase in the resonant frequencies of the vocal tract

Answer 2

The helium sticks around in your throat and lungs for awhile. He has a much lower density than typical air and so the sound waves created by your vocal cords vibrate much faster under less resistance, thus creating higher frequency waves, higher pitch sound You can get the opposite effect by breating a much denser gas (like SF6, used in high voltage power supplys), it makes your voice really deep

Answer 3

Helium is lighter than air. When inhaled and released at talking it changes the pitch of your voice. Your vocal cordes reacted differently, they sound deeper with air, and higher with lighter Helium.

Answer 4

the helium resonates across the vocal cords at a differnet frequence than nitrogen and oxygen do (air is predominately N2 & O2)......hence the higher vocal qualities we here.