An overview of the noise cancellation technology

Noise cancellation is a procedure of lessening and completely cancelling the undesired sound, so that you can’t hear it. This technology is a growing sector of acoustics. Nowadays, contemporary lives are full of all types of noises; most of it is harmful for our ears. This is mainly the case with people living in the major towns or cities. They have very less peaceful times during the day and they look for the best soundproofing material. 

Let us first check out the working principle of noise cancellation technology. A sound travel through water or air in the form of waves and every wave comes with a specific frequency, size and shape. Microphones can detect these sound waves in any specific ambiance. Then a digital signal processor is integrated in the system, which distinguishes the unwanted and preferred sound waves in the noise cancelling speakers.  

One main tool for noise cancellation is the soundproof door cover that is readily available in the market these days. People working near the airports and factories may use these and save their eardrums from loud noises. It is favoured as it comes with a simple installation system and has a short wavelength. 

The soundproof blanket for door also has some drawbacks. First of all, they are heavy and will need substantial structure for support. They might not be able to prevent all the sounds efficiently. It is because a low frequency pressure wave may distort the signal. At higher frequencies, they are less efficient. 

As a matter of fact, noise cancelling speakers implements a procedure of removing the unwanted sound waves on real time basis. Nonetheless, this is simple for a single frequency sound rather than a multiple frequency one. These products can efficiently assist in saving one’s eardrums from being subjected to unwanted sounds.