I’ve been tinkering with my HomePod today, and I realized I didn’t know how to turn the microphones off. On the Amazon Echo and Google Home, there’s an easy way to keep the device from listening. Turns out, Apple has a way as well:
Say “Hey Siri, stop listening.” When Hey Siri is turned off, touch and hold the top of HomePod to talk to Siri. To turn Hey Siri back on, in the Home app, press (or touch and hold) a HomePod, then tap Details and change the Listen for “Hey Siri” setting.’