![]() Most of today’s headsets use active noise-cancelling, which means that they require built-in batteries (and which also means they need to be charged up).Ĭhrislu says, “Active noise cancellation uses a microphone (or series of microphones) to listen to the environment outside the ear and then applies the reverse noise to the headphone speakers themselves. ![]() “Passive noise cancellation works by sealing the headphone or earbud and thus blocks outside noise interference.” says Chrislu. There are actually two kinds of noise-cancelling headphones, says Spencer Chrislu, Director of Content Services at Cambridgeshire-based audio tech pioneer MQA. ![]()
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