There’s a rumor on the internet that Alexa ignores commands if it hears audio that is missing frequencies between 3000 and 6000 Hertz. That’s how TV commercials can say “Alexa” without triggering the Alexa devices in the room. So I fact-checked it. I recorded my voice saying “Alexa, what is the date today?” and made… Continue reading Triggering Alexa from TV sound