Helium gas is an inert gas. Inhaling helium gas to change your voice can make your voice high-pitched and clear like a cartoon character, which makes everyone laugh. That’s why helium gas is also known as voice-changing gas.

Helium gas is an inert gas that is colorless, odorless, tasteless, and non-toxic. Helium gas is lighter than air, which is the main reason why helium gas is used to change voice. And this is also the method of changing voice that young people have been using for entertainment recently.

In addition to helium gas for changing voice, SF6 also changes voice quite interestingly. SF6 will make your voice deeper, like the voice of an older man.

Inert helium gas – voice-changing gas

This may seem like something that can only be done with computer technology, but we can also achieve that “cartoon voice” with helium gas – an inert gas known as voice-changing gas.

The tool used in this experiment is: a balloon inflated with helium gas. Helium is the “magic” that makes your voice funnier.

When you inhale helium gas from the balloon, close your mouth tightly, and then suddenly speak or sing. You will be amazed and burst out laughing at the voice you hear.

After inhaling helium gas into your lungs, you will have a high-pitched voice like cartoon characters. If you have never heard of this voice-changing trick, check out the video about the gas that changes voice below.

Voice change after inhaling helium gas

What makes our voice change after inhaling helium gas? And is inhaling helium gas dangerous for us?

Mechanism of voice change when inhaling helium gas – voice-changing gas

The mechanism of this experiment is very simple:

Helium is much lighter than air, so the speed of sound in helium is about 3 times faster than in air. Therefore, the speed of a sound wave when traveling through helium gas will be much faster than when traveling through air.
When you inhale helium gas, your throat is filled with this gas. As a result, the voice frequency will change, increasing significantly, and making your voice higher and clearer. However, because the amount of helium gas in the balloon is low, the “cartoon voice” only lasts for a very short time and then returns to normal.

Is inhaling helium gas to change your voice dangerous?

In fact, helium gas is not harmful to our bodies. It is even used in asthma medications.
However, during the process of inhaling helium gas to change your voice, your body will not receive oxygen. Therefore, continuous inhalation of helium gas can cause oxygen deficiency, leading to asphyxiation.
And especially, you must not inhale helium gas from compressed gas cylinders, because the pressure inside the cylinders is very high, and the gas jetting out at high speed can rupture lung tissue and cause gas embolism, leading to stroke and even death. Therefore, you should be careful with this experiment!

After we have clearly understood how helium gas changes your voice and the safety of this voice-changing gas. You may be curious and want to try this interesting trick. So, where to buy voice-changing gas?