The success of ‘Noise Canceling’ headphones in recent years has been more than evident. However, it is a technology that perhaps not everyone understands. We explain how it works, its pros and cons. Walking on the street without listening to traffic. Flying in an aeroplane without listening to the engine or, the loudest of a trip through the clouds, a baby crying two rows behind. If you do not know what ‘ Noise Cancellation ‘ is, this may seem impossible to you, but it is not, there are already dozens of headphones with this technology. Of course, the best brands of sound products already have their ranges of headphones with ‘Noise Cancellation’, as is the case with Sony, with their Sony wh-1000xm3, and Bose, with their QuietComfort 35 II. These two models, without a doubt, are the kings in this field.
The headphones with ‘Noise Cancellation’ or ANC ( Active Noise Control ) system, allow you to cancel unwanted noise based on the theory of wave interference. How does this work? Noise is transmitted in the form of sound waves, and when there are waves of the same frequency in the same space, then we talk about interference. Noise.
Interferences can be of two types: constructive or destructive, depending on whether the wave size is larger or smaller than the wave that interests us. In our case, when we are listening to music, ANC technology is capable of analyzing, selecting interference or noise, and generating a sound wave that ‘cancels out’ the unwanted wave.
The video helps a lot to understand the way of working with ANC technology. As you have seen, the waves of noise that surround us merge with the waves of the music we listen to with our headphones and the system, when detected by the device’s microphones, emits a wave that cocha with it. The key to all this is that the wave emitted by the ‘Noise Cancellation’ system to silence that interference is exactly the same but in opposite phase.
Of course, this technology is not perfect and you will continue to hear some background noise, but minimal. The most ‘purists’ of sound are not too friendly with this technology since they discard any treatment of the audio that is made after the post-production of the music. But what is clear is that this technology has made a leap in quality to the way we have to enjoy music.
If you like to completely isolate yourself from the world and be left alone with your music, you have to try one of these headphones. You are going to hallucinate! And, if you want to continue enjoying music, you cannot miss these two Apps to enjoy through television either: Movistar Sound and GoMusic. With the first, you can discover new music every month as well as the soundtracks of the original Movistar series. With the second, you can see live concerts in high resolution to recall performances by your favourite artists, both national and international.