Here is a very interesting paper describing the on-device deep neural network that waits for "hey siri" to be uttered (2017): https://machinelearning.apple.com

Here is a very interesting paper describing the on-device deep neural network that waits for "hey siri" to be uttered (2017): https://machinelearning.apple.com/2017/10/01/hey-siri.html https://machinelearning.apple.com/2017/10/01/hey-siri.html