![]() ![]() Headphones with active noise cancellation have built-in microphones that detect the pitch and amplitude of external noise. This technology was first used in headphones in the 1980s to protect the hearing of airplane and helicopter pilots. These two sets of frequencies cancel each other out so the brain thinks that no ambient noise is present. Sennheiser headphones give you the highest sound quality with up to 30 hours of battery life for long-lasting enjoyment.Īctive noise cancellation works by identifying frequencies of sound in the environment and creating the exact opposite frequencies.
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