Why does belching make a loud sound?

Sometimes belching sounds loud but sometimes belching doesn't sound. How loud a loud belch is depends on a number of factors, such as how much steam from the stomach pushes up and how the esophageal structure of the person is.

What is belching?

Belching is the phenomenon of gas in the stomach that escapes through the esophagus, the pathway of food from the mouth to the stomach. The esophagus is a muscle tube that runs from the deep side of the oral cavity to the stomach.

Where does burping sound come out?

If you look in the mirror and open your mouth wide, you can see a small part swinging at the end of the mouth of the throat, which is the esophageal cap. When swallowing, the esophagus lid pushes back to close the larynx and open the esophagus for food to go down. You can liken the esophagus lid to the traffic controller.

The sound is heard when the vapor passes from the stomach when the epiglottis is closing the esophagus.

The sound is heard when the vapor passes from the stomach when the epiglottis is closing the esophagus. This upward flow creates a pressure, especially when a lot of steam creates high pressure. The air stream is compressed against the esophagus, passing through the esophagus and larynx surface, causing the surface of the esophagus and larynx to vibrate, like a window that is hit when the wind blows. Another reason for belching is that the esophagus is long and round, so the sound has a resonance when passing.

Can you adjust for louder or smaller burp?

Make a small experiment like this: take a tube core of the kitchen paper roll or toilet paper roll, close the mouth to one end of the tube and make a long "hmm" cry, you will see this sound loud more when you cry like that without the tube. It was due to the sound of the sound hitting the pipe wall. Do the same thing, but this time you 'hmm' with more steam coming out, you will see a louder sound. This means that pushing more air through the tube makes a louder cry, like a window beating harder if there is a bigger wind.

With the same amount of air released, the loud or small cry is because your esophagus is wide or narrow.

If you only drink a small cup of soda water, your stomach will have only a little bit of steam because the carbon dioxide in the soda escapes and the burp sounds will be small, and if you drink both cans and drinks, then there is plenty of it. CO ₂ from soda will also swallow more air, so belching will sound louder.

Young children have small stomachs and small esophagus so they often have small burp sounds, not like older children and adults.

Where does the steam in the stomach come from?

Steam in the stomach can be the air you swallow during eating. Often eating too quickly and drinking with a straw will make you swallow more air. The gas in soft drinks containing CO ₂ also causes stomach bloating. In the process of gastrointestinal digestion also produces some gases.