Category Archives: Headphones

Active vs passive noise cancellation explained: how ANC uses microphones to cancel sound, what passive isolation does, and which works best for planes, offices, and commutes.

When you pair wireless headphones, an invisible negotiation decides how your music is compressed for the trip through the air. That choice — the Bluetooth codec — affects detail and, quietly, the delay between video and sound. It’s one of the least advertised and most misunderstood parts of buying wireless audio. Why a codec exists…