A good set of noise-canceling headphones is easy to find. But earphones or earbuds are a little more challenging to get. Here’s your cheat sheet to buy the best noise-canceling earphones for your needs. Most earbuds have “passive noise cancellation” or “noise isolation,” meaning they block out noise by sealing the entire ear canal. But you’ll still be able to hear quite a bit, especially in loud environments like airplanes. What you need is a pair of active noise-canceling earphones. Active Noise Cancellation (ANC) technology adds a little more circuitry to your headphones. It includes a sensor and a microphone....
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