What is active noise cancellation? Everything you wanted to know about ANC headphones (but were too afraid to ask)

You can’t have missed the rise of ANC. It’s become the must-have audio feature – the consumer space feels duty bound to squirrel noise-cancelling tech into even the best noise-cancelling earbuds. And audio brands do this for good reason: nothing else offers quite the same experience or isolation.But what exactly is active noise cancelling? How does it work? And what are the best noise-cancelling headphones to buy if you really can’t stand to listen to any of the world

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