How much do you know about headphones?

In our current life, people can see headphones everywhere. No matter where you are, in the house, outside the door, all kinds of English listening tests, it seems that headphones are indispensable. From the invention of headphones to the present, it is developing with the advancement of technology.
Headphone products are maturing with the first two small speakers in your ears over time. Whether it is the type of headphones or wearing styles, even the pronunciation of the headunit, it has many changes. This article will introduce the technical changes of the headphones from the invention until now.
The original headphones are two units  black pod proof pronunciation that hang from the edge of the ears, so far many types of headphones have been developed. Generally, it includes headphones, earplugs, earloops and the newest development bone conduction headphones.
Headphones are the first type of headphones. Compared to the other type of headphones, it is poor in the expression of subtone and inconvenient to carry. Earplug is a revolutionary advance in headphone development. The small size makes it very convenient for outdoor use. As ambient noise increases in urban development, the ear monitor is a revolutionary new product that is more suitable for application in the outside world.
The earloop can be thought of as an intermediate product between headphones and earplugs. It is very nice to wear. However, it does not have clear characteristics.
Bone conduction headphones are a relatively new technology, in the use of vibration theory, which transmits sound through the skull to the listening center directly. However, this product is still not popular; It is undefined if it can bring a game changer for headphones.
According to the application of the headphones, the type of headphones is enriched. Generally, they are classified into three types: open, closed and semi-open headphones. Open headphones generally provide a comfortable feeling when listening, they will not cause pressure on the ears. It is applicable to enjoy music indoors. But this type of headset has a great impact on the environment, with some regional limitation.

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