Apple Cut Frequencies in WWDC Keynote to Prevent Siri Activations

Apple removed 3kHz, 4kHz, 5kHz, and 6kHz frequency bands from the WWDC 2026 keynote video whenever the word "Siri" was spoken. The technique aimed to prevent HomePods, iPhones, and other devices from waking during the presentation. Multiple viewers reported their devices still activated anyway.