Peace does not come by easily in the modern world. It can especially be a huge problem if you are doing a transcription of an audio file for instance. As a result, research has been on-going on ways to ensure that the noise from outside can be minimized. The technology thus focuses on giving one a quiet environment despite the noise from outside.
Uses of Noise Cancelling
Many areas have benefited greatly from the use of noise cancellation. One of these sectors is aviation. Airplanes, especially their cockpits can tend to be a bit noisy. The noise cancelling helps to keep out most background noise, thus making aviation safer. It is because pilots can hear instructions clearly without having to second guess what they heard from the control tower or the pilot.
Noise-cancelling headphones are also another area that has been beneficial to a lot of people. Ordinarily, if one were traveling in a noisy commercial flight or a noisy bus, they would have to raise the volume of their device significantly. However, this might have a long-term effect on one’s hearing capabilities in the future. Noise cancelling enables one to listen to music even in crowded places without having to raise the volume.
How Does It Work?
Bose developed the concept of noise cancelling. He is also behind one of the most successful producers of sound equipment renowned for its quality. One day on a flight, he discovered that aircraft engine noise prevented him from listening to his music. He began working on the concept of noise cancelling, which bore fruit.
The concept works for low-frequency noise. The headphones have a microphone fitted onto them that measures ambient noise. The headphones then produce a frequency that is as closely matched to the incoming sound as much as possible. When these two waves collide, they cancel each other out. As a result, the listener can go about their business peacefully.
However, this concept does not apply to higher frequency sounds. The concept can still work in theory; however, it would require that the headphones be quite large. This would be to accommodate the extra processors and electronics that would need to be installed. The headphones simply rely on soundproofing to keeping higher frequency noise out.
The Cons of Using This Technology
As with any technology, this also has some downsides. For one, they can be quite costly. In order to enjoy the quieter experience, on has to add some more money. The cost can be quite high at times. In addition, these devices can be quite colossal. They are fitted with extra electronics that have to be accommodated within the headphones. They also tend to consume a lot of power; as a result, they will drain a phone’s battery much faster.
Noise cancelling headphones are available at most electronic stores. However, not all of them cancel the same amount of noise. Manufacturers indicate how many decibels the headphones can reduce. One needs to watch this figure carefully to ensure they are getting value for their money.