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Slumber Party: Sleep Tracking for Better Sleep

Made by Google Podcast

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How Do You Train a Machine Learning Model to Measure Heart Rate?

How do you train that machine learning model? Because you have those signals, then the watch, I guess, needs to understand what they mean. The green light reflects off the blood in your blood vessels. Every time your heart beats, there's just a tidal pulse of arterial blood with more oxygen. So effectively, we get a little sinusoid wave and we can pick up the peaks which tell us when each individual heartbeat happens.

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