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Description:
I would like to understand if the PPG signal is inverted, as the systolic phase seems to align with the literature only when I invert the signal on the Y-axis.
Regarding the three PPG channels, does Ch0 represent the photodiode of two opposite LEDs?
Additionally, concerning ambient light, is there an Automatic Light Control (ALC) in the device? Does anyone have advice for effectively using raw ambient light data? For me, averaging the three channels and subtracting the ambient light is not robust enough. Is there a method o subtract, perhaps using the median or an alternative average of the ambient light?
The text was updated successfully, but these errors were encountered:
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Description:
I would like to understand if the PPG signal is inverted, as the systolic phase seems to align with the literature only when I invert the signal on the Y-axis.
Regarding the three PPG channels, does Ch0 represent the photodiode of two opposite LEDs?
Additionally, concerning ambient light, is there an Automatic Light Control (ALC) in the device? Does anyone have advice for effectively using raw ambient light data? For me, averaging the three channels and subtracting the ambient light is not robust enough. Is there a method o subtract, perhaps using the median or an alternative average of the ambient light?
The text was updated successfully, but these errors were encountered: