I'm a bit confused about the technical terms for headphones. Can someone explain exactly what active noise cancellation (ANC) is and how it differs from passive isolation? I'd also like to know how it affects battery life or the final sound I receive. Or is it just marketing?
Sound vs. noise cancellation in headphones: which works better?
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Wow bro, I use ANC on my Galaxy Buds 2 Pro all the time, I talk about wireless earbuds like a pro, they're already tired of me rambling about it 😂
ANC, or Active Noise Cancelling, works by detecting background sounds and producing the exact opposite sound wave to cancel out the noise. Like, if you're on a crowded train and someone yells "Go to platform 322," the earbuds generate an inverse sound wave to block that noise. Passive noise isolation, on the other hand, just physically blocks sound with hard materials around your ears—so no signal is produced at all. That's the main difference; ANC is active, while passive isolation is just my big ears and the earbuds "muffling" the sound 😎
With ANC, I get crystal clear sound. Like, even when there's a loudspeaker blaring, it's almost completely muted, though there's a slight hissing sound that tells you the earbuds are on—once you get used to it, you don't even notice it anymore. As for battery life, if you use ANC constantly, it does drain a bit faster. The Galaxy Buds 2 Pro last around 5 hours with ANC on, compared to over 8 hours normally. But bro, if you're gonna use it all the time anyway, I think it's worth it.
As for sound quality, the impact is minimal. In fact, with ANC on, you might start hearing some sounds more clearly. It's genuinely useful tech, especially in city life. Just make sure to turn it off when you're not using it so the battery lasts longer.