Active Noise Cancelation is a majorly sought-after feature on earphones and headphones, and for good reason. It removes a lot of outside noise from your listening experience, making it both significantly more peaceful and easier to listen at lower volumes. However, how noise-canceling works on headphones like the Sennheiser Momentum 4 Wireless and the Sony WH-1000XM5 is a bit of a mystery to many. We sat down with Christian Ern, a Principal Product Manager of Consumer Headphones at Sennheiser, at this year’s IFA 2023 to help break it down.