Talk About the Meaning of ANC Earphones

Headphone products have become a necessity in life for today's audio-visual enthusiasts. As a small audio device for private music enjoyment, earphones have become a popular product for many audio-visual entertainment users.

Nowadays cheap noise-canceling ANC earphones are widely used in the military, recording, monitoring, and other work. Its biggest function is to isolate the person listening to the sound from the outside world. Today, we will follow this blog to understand the meaning of noise reduction in headphones.

Why Do We Need Noise Reduction?

Noise Cancellation is a big acoustic topic. Whether it is a large venue or a small room, there are indicators of noise reduction. The sound of running in the subway, the noise of the street, and so on. When you use noise-canceling ANC earphones, you can filter out these sounds to a great extent.

Basic Noise Reduction

Whether they are in-ear or over-ear headphones, they are designed for the structure of our ears. Headphones wrap our ear muscles nicely. In-ear headphones create sound isolation in the ear canal. Through different materials, fitting angles, and wearing methods, we can use noise-canceling ANC earphones to isolate external sounds very well.

Active Noise Reduction

"Sooner or later, to survive, humans will have to fight noise, just like cholera and plague."

The prediction made last century by Nobel Laureate in Physiology Robert has now quietly become a reality.

In the practice of preventing and controlling noise pollution, passive noise reduction (also known as physical noise reduction) is first adopted by humans. The technical feature of physical noise reduction is to use various characteristics of materials to reduce noise using isolation, shock absorption, damping, etc.

History of Noise Reduction

To make up for the shortcomings of physical noise reduction, German scientists in the 1930s proposed the principle of active noise reduction based on the characteristics of sound as a wave.

The principle is that noise can be eliminated by omitting reverse sound waves to hedge the original sound waves and make them weaken or even disappear.

It was not until the late 1980s that scientists practiced active noise cancellation for the first time. Compared with physical noise reduction, active noise reduction technology has unparalleled advantages. However, due to the high cost, it cannot be accepted by the public. Noise-canceling ANC earphones have been mainly used in special fields such as aviation and the military.

It was not until after 2000 that civilian headphone products for noise isolation and music listening began to appear.

Tips

Excessive noise reduction effect may cause the user to not hear the danger warning and bring danger. Therefore, when you are walking on the street, please do not use noise-canceling ANC earphones to ensure your safety.

The life of the internal battery also affects the life of the cheap noise-canceling ANC earphones. Active noise cancellation requires battery power, but the battery will run out. The long-term opening also affects the sound quality.

Conclusion

At present, there are many kinds of cheap noise-canceling ANC earphones on the market, which also gives many friends more choices. This product brings us many benefits. In addition to reducing ambient noise and making music clearer, it also prevents hearing damage from increasing the volume of the noise. You should get yourself a pair of noise-canceling ANC earphones!