Why is there still sound when the earplugs are inserted? How to wear earplugs for the best effect

The biggest function of earplugs is to reduce external noise. Why can I still hear noise after wearing earplugs? How should I wear earplugs for the best effect?

Why is there still sound when the earplugs are in?

Hearing the sound is a normal phenomenon, because our sound will be directly transmitted to the brain through the mouth or nasal cavity and there will be this kind of nerve reflex, so there is nothing to be entangled about.

How to wear earplugs for best effect

1. Rub the earplugs back and forth (hands must be kept dry)

2. Lift your ear with one hand and insert the earplug into the ear canal with the other hand.

3. After inserting the earplug, press the bottom of the earplug and wait for it to slowly rebound and fit the ear canal before releasing it.

Are the earplugs disposable?

Generally speaking, different types of earplugs have different service lives. Most earplugs are reusable, while disposable earplugs are not. Since disposable earplugs are easily deformed after use, most earplugs should be cleaned and maintained during normal use to make them last longer.

Who invented earplugs?

The earliest earplugs were invented in Europe. According to legend, Scottish fishermen used a wax earplug to resist the lewd sounds of sea witches. The earliest earplugs also originated in Europe, and wax earplugs were the most traditional material. Later, due to the continuous research and development of new materials, an elastic material gradually became the mainstream for making soundproof earplugs. It is the polyvinyl chloride (PVC) foam soundproof earplug with slow rebound characteristics. After the slow rebound earplug is rubbed into thin strips by hand, it will slowly expand within a few minutes and gradually return to its original shape. It is entirely possible to shape earplugs of different specifications and shapes according to different people, which is convenient to wear. Later, the European Union had a new definition of PVC products. They found that PVC synthetics contain toxins and are not suitable for making products close to the human body, and the use of this material was completely banned. Therefore, the material used to make noise-proof earplugs abroad replaced PVC with PU materials.