What is noise cancellation technology and what is its application?

The effect of using a headphone based on noise cancellation technology is quite noticeable. By removing ambient sounds, you can enjoy music more on the street or even on the plane. But what exactly is noise cancellation technology and how does it work? We will continue to analyze this technology.

BingMag.com What is noise cancellation technology and what is its application?

The effect of using a headphone based on noise cancellation technology is quite noticeable. By removing ambient sounds, you can enjoy music more on the street or even on the plane. But what exactly is noise cancellation technology and how does it work? We will continue to analyze this technology.

What is noise removal technology?

In order to understand the nature of noise removal technology, we must first understand noise. do. Noise can be defined as any unwanted sound. Noise can be anything from cars to construction noise and more. Our ears receive these changes as air pressure and the brain interprets these changes as sound.

BingMag.com What is noise cancellation technology and what is its application?

How does noise cancellation work?

To better understand how to neutralize sound waves, we need to explain the basics of these waves. All noise canceling headphones use something called "phase inversion" to create "noise cancellation". Suppose we have two sound waves that have exactly the same characteristics. These two sound waves are "in phase" and reinforce each other; This means that in the end they increase the loudness of the sound. what will happen? In this scenario, the peaks of one sound wave are aligned with the valleys of another wave. In this condition, the waves are considered "out of phase". In this case, the two waves cancel each other out and our ears do not hear any of them. This means that the noise does not disappear, but our ears are no longer able to hear these noises.

If we do this with all sound waves, we can achieve a complete elimination of unwanted sounds. Although we cannot fully implement such a goal, we are able to implement this method for many unwanted sounds.

How do headphones implement the noise cancellation system?

BingMag.com What is noise cancellation technology and what is its application? It must create certain sound waves. For this reason, all headphones with this feature use multiple microphones. These headphones receive all the sounds in the environment and then, using the hardware they have, produce the sound waves needed to remove unwanted sounds.

Limitations of noise cancellation technology

BingMag.com What is noise cancellation technology and what is its application?

In reality, it is very difficult to eliminate all workplace noise. Therefore, noise cancellation technology is by no means perfect. But if the technology in question has a lot to say, it can respond well to the needs of users. Considering that the headphones must react instantly to different sounds, they can react better in the context of predictable sounds such as airplane engines or car horns. In order to create the sound waves needed to remove these types of sounds, the headphones must perform processes that reduce battery life.

Besides this type of noise cancellation, which is called active noise cancellation, it must be Let's also mention the removal of passive noise. Passive noise cancellation is achieved thanks to the design of the headphones, and if the headphones perform better in terms of proper placement in the ear or on the ear, the ambient sounds are largely eliminated.

Possible noise canceling problems

BingMag.com What is noise cancellation technology and what is its application?

Noise removal technology can have consequences for to be accompanied For example, one of the common side effects of this technology is dizziness. There have also been reports of headaches and nausea. There are many reasons for this. For example, the low-frequency sound waves produced by the noise cancellation system can stimulate the hair cells in the ear known as stereocilia. The stimulation of these cells also transmits the message of head movement to the brain. But when this message is transmitted but our head is actually fixed, this mismatch leads to vertigo. If you experience such a problem while using noise cancellation technology, you can reduce the intensity of noise cancellation. If such a solution is not fruitful, it is better to use headphones without this feature. Fortunately, this technology does not harm your ears. Meanwhile, with headphones without this technology, if you want to get rid of the ambient noise, you will probably increase the volume of the music, which will cause great damage to the listens.

What points should we pay attention to when buying headphones with this feature?

BingMag.com What is noise cancellation technology and what is its application?

After getting acquainted with the features and basics of this technology, now it's time to talk about the recommendations for buying such headphones. First of all, we must say that none of the headphones based on this technology are perfect in this regard. It is also better to choose headphones that give the user the right to choose the intensity of noise cancellation.

As we said, some users who have problems with this technology can overcome this problem by reducing the noise cancellation intensity. overcome Also, these types of headphones use the so-called transparency feature. This means, for example, if you are riding a bike, you can make it so that you only hear car horns to reduce the chance of an accident.

Before buying headphones with this feature, be sure to pay attention to the reviews. . In these reviews, the quality of the noise cancellation system is usually mentioned. Along with active noise cancellation, you should not underestimate the importance of passive noise cancellation. For example, if you want to buy a headphone in your phone, it is better to buy models with series based on different sizes, which will let as little noise from the surrounding environment as possible to your phone.

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Source: Android Authority

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