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What is the operation of noise-canceling headphones?


Without going into a lot of intricate details or conjuring up images of physics and math equations, let's take a look at how noise-cancelling headphones actually work. Noise-cancelling headphones work by combating one sound with another sound. It can be counterintuitive if you're hearing this for the first time.

Trust me, I feel the same way when I first learned how headphones work. But here's how a headphone enthusiast can better understand it, and it'll come in handy if you're good at simple math. “If the ambient noise (an airplane engine, say), is +1 the headphones would create and add -1 so your ear hears 0 (i.e., no noise).”

The truth is, however, that noise-cancelling headphones function optimally when exposed to continuous noise and they will not work quickly and sounds like a sudden bang or clap. Some versions also battle with cancelling out higher frequency sounds, like the human vocal range. It is important to note that not all noise-cancelling headphones work the same, so it's worth doing your research before investing in a pair.

What to look for in wireless noise-cancelling headphones

To really get the most out of your noise-cancelling headphones, there are a few features to consider. For starters, battery life is important, it should last as long as you do. Next up is the dynamic duo, ambient awareness, and noise-cancelling technology. The two go hand-in-hand, as ambient awareness is a feature that allows you to still hear the world around you when needed or activate noise cancellation when things get too loud and overwhelming. Being able to switch between the two comes while out and about.

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