Why does inhaling helium make the sound sharper?

The gas (helium) inside the hydrogen balloon changes its voice!

This is because the sound wave of sound must be transmitted by the medium, and the type, state, and density of the medium will affect the transmission speed of the sound wave.

Human sound is generally transmitted through the air. When the composition of the air changes from 78% nitrogen and 21% oxygen to 80% helium and 20% oxygen, the density becomes one-third of that of normal air, and this change causes sound to travel nearly three times faster, so that the person who inhales helium will speak at a higher frequency. It's an interesting phenomenon that makes people who breathe helium speak in a shrill voice.

Helium is an inert gas, that is, non-flammable, non-toxic, non-radioactive, naturally occurring and environmentally harmless gas, and it is also the second most abundant substance in the universe after hydrogen. However, its stock on Earth is very scarce.

In the United States, helium is extracted from natural gas wells and radioactive stone mines. Radioactive stone mines release a non-radioactive by-product of helium during hundreds of millions of years of decay. Helium accumulates in natural gas wells and is developed with natural gas and then separated.

Helium is widely used in medical applications.

Oxygen is replaced by helium in the body, resulting in hypoxia (the respiratory reflex is driven by excess carbon dioxide in the receptors and is not sensitive to hypoxia), causing symptoms of hyperbaric tension and death from overdose.

Does helium sound thinner when inhaled? How does it work?

Our vocalizations are amplified by the vibration of the vocal cords and the resonance of the oral cavity, and what changes is not the essential sound, but the sound that spreads. The sound wave of sound must be transmitted through the medium, and various factors such as the state, density and type of the medium will affect the transmission speed of the sound wave. Helium transmits sound at 3 times faster than ordinary air, so when we inhale helium, the medium of sound transmission becomes helium, which makes the resonance frequency of the mouth higher, which is why the sound becomes thinner after inhaling helium.

And when we breathe ordinary air, the sound is normal, and this is because the medium does not change, and the frequency of the human voice does not change.

It is worth noting that although helium is a non-toxic and harmless gas, inhaling too much will cause more helium than oxygen in the body, causing the human body to lack oxygen. In addition, the time for changing the voice can only last about one minute, so even if you want to pursue more entertainment effects, you can't inhale more, after all, people can only breathe through oxygen, and inhaling too many other gases will cause physical discomfort.

After inhaling helium, the sound of the person will become higher, mainly because the density of helium is smaller than that of air, so the speed of sound propagation in the air digging old gas is faster. This causes the frequency of the sound to increase, that is, the pitch to become higher .

1. It is a process for the sound to change from low to sharp after inhaling helium. The human voice is produced by the vibration of the vocal cords, the source of the sound is constant, and what changes is the gas in the mouth. Helium inhalation will change the voice because the sound wave of the sound must be transmitted by the medium, and the type, state and density of the medium will affect the transmission speed of the sound wave.

2. We all know that the voice of people in real life is generally transmitted through the air, when the composition of the air changes from a certain composition of nitrogen and oxygen to a certain degree of helium and oxygen, the density becomes relatively smaller. This is an interesting situation that makes the person who inhales helium speak in a shrill voice.

3. There is a gas that is not very reactive and does not combine with other elements or compounds in a normal state. It is helium, but it also has a very peculiar function, which causes the sound to travel nearly three times faster, so that the voice of the person who inhales helium will become more frequent.

The reason why inhaling helium will change the voice is because helium changes the resonance frequency of the mouth, increases the high-frequency component in the voice, and weakens the low-frequency component, which will make people mistakenly think that the voice has changed.

Under normal circumstances, the sound wave of sound must be transmitted by the medium, and the type, state and density of the medium will affect the transmission speed of the sound wave, and the human voice is generally transmitted through the air. Coincidentally, when the composition of the air changes due to the inhalation of helium, the speed of sound propagation will change, so there is a situation where the inhalation of helium changes the voice.

When helium is inhaled, the resonant frequency of the oral cavity increases, and although the vibration of the vocal cords is no different from normal, the higher frequency components of the voice are amplified, and the medium frequency components are not amplified, so the pitch sounds much higher than usual.

To put it simply, whether you breathe helium or not, the frequency of the voice does not change. It's just that helium changes the resonance frequency of the mouth, increasing the high-frequency component of the voice, weakening the low-mid component, and making the listener mistakenly think that the pitch has become higher.

Other ways to change the sound

In addition to inhaling helium, there are many other ways to change the sound. People can speak faster or slower, more compact or looser words. These changes will affect the pitch and vibration of the sound.

This method is often used in ** compositions to create unique rhythms and melodies.

In addition, people can also change their voices by changing the position of their throat and mouth. For example, one can make the voice more tense or soft by tightening the throat or opening the mouth. This method is often used for singing techniques such as guttural vibrato or oral resonance.

Finally, people can also use audio effects to change the sound. For example, one can use the delay effect to create an echo or multiple sound effect. Alternatively, one can use filters to reduce or increase certain frequencies of the sound.

These methods are often used in ** and film production to create unique sound effects.

There is a gas that is colorless, odorless, non-flammable, and has a content of about parts per million in the air. The chemical properties are also not very reactive, and usually do not bind to other elements or compounds. It is helium, in fact, it also has a very peculiar function, once a person inhales helium, people will change their voice, why is this?

I believe that many friends don't know much, so let me answer your doubts.

There is a plot in the American TV series "Life Big**" in which the male protagonist Sheldon's voice changes from low to sharp after inhaling helium. The human voice is produced by the vibration of the vocal cords, and the sound source is constant and changing'It is the gas in the mouth. Helium raises the high-frequency part of the human voice, while air raises the slightly lower part of the human voice.

So, when Sheldon's mouth is filled with helium, his voice becomes sharper.