Apple cuts certain audio frequencies in keynotes to prevent Siri from waking up

According to a tipster, Apple cuts out audio frequencies between 3kHz and 6kHz in keynote videos whenever Siri is mentioned, to prevent nearby Apple devices from accidentally waking up. This move aims to avoid the common issue of smart speakers triggering by mistake.

Accidental wake-ups aren't rare. During a 2025 Spring Festival Gala sketch, a line "Xiao Ai Tong Xue" woke up over 100 million Xiaomi smart speakers globally.

Apple's proactive audio tweak shows how sensitive voice assistants can be, and highlights how companies keep improving user experience.