Google’s new technique works by sending low-intensity ultrasonic probing signals via the speakers.
Researchers at Google have devised a technology that allows active noise-canceling (ANC) wearables to feature health-sensing applications.
The team utilized a technique called audio plethysmography (APG) in ANC wearables to monitor a user’s physiological data, such as heart rate and heart rate variability, without the need for additional sensors or sacrificing battery life.
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