eli5: How does siri hear me say “hey siri” if it isn’t constantly listening to my conversations or me speaking?
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Lets try a more ELI5 attempt.
Imagine you are sleeping and the only thing that can wake you up is your alarm clock. There might be people in the same room talking. You hear them but you don’t wake up and your brain does not register what they are saying.
Then, suddenly your alarm rings. You wake up and now, despite the fact the other people talk just like they did before you can hear them and know what they are talking about.
Siri works on a similar principle. It has 2 cores: a small specialised one that acts like an alarm clock and a more complex one that can actually “understand” you. The alarm clock doesn’t understand anything except “hey siri” at which point it rings the alarm and wakes up the complex core.
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