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.
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.
Better question why does Siri randomly go “Uh huh?” or “I’m not sure, here’s a search result?” in the middle of the night? That’s the real question.
Better question why does Siri randomly go “Uh huh?” or “I’m not sure, here’s a search result?” in the middle of the night? That’s the real question.
Better question why does Siri randomly go “Uh huh?” or “I’m not sure, here’s a search result?” in the middle of the night? That’s the real question.
Your phone has a small chip called DSP, wich is always translating your voice into data. It has a “special mode” where it uses almost no battery but can still understand the “Hey Siri” hotword and wake up the phone.
It’s like when your dog is sleeping next to you and you say something. It will listen, but won’t react unless you call your dog’s name.
Your phone has a small chip called DSP, wich is always translating your voice into data. It has a “special mode” where it uses almost no battery but can still understand the “Hey Siri” hotword and wake up the phone.
It’s like when your dog is sleeping next to you and you say something. It will listen, but won’t react unless you call your dog’s name.
Your phone has a small chip called DSP, wich is always translating your voice into data. It has a “special mode” where it uses almost no battery but can still understand the “Hey Siri” hotword and wake up the phone.
It’s like when your dog is sleeping next to you and you say something. It will listen, but won’t react unless you call your dog’s name.
It has 2 ways to listen.
One is a low power mode, this mode “hears” everything you say of course, but it only understands “hey siri”. Once “hey siri” is triggered the second listening mode is activated which uses a lot more cpu and power to use and transmit the data.
It has 2 ways to listen.
One is a low power mode, this mode “hears” everything you say of course, but it only understands “hey siri”. Once “hey siri” is triggered the second listening mode is activated which uses a lot more cpu and power to use and transmit the data.
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