System and Method for PPG Using Wideband Accelerometer with a Wearable Device

An apparatus includes a processing device coupled to a memory storing instructions. The instructions may cause the processing device to receive photoplethysmography (PPG) data derived from signals associated with a PPG sensor oriented proximate a portion of an anatomy of a human subject and associated with a heart rate of the human subject; receive wb-accelerometer data derived from signals associated with a wb-accelerometer sensor oriented to sense the heart rate the human subject; and combine the PPG data and the wb-accelerometer data to generate a heart rate estimate.