Tool/software:
I'm asking a same question again, because I get no answer at this thread.
We use AFE4404 sensors in our smartwatches, and have two questions.
First, Is the algorithm AFE4404 sensors estimating SpO2 based on the paper "Source–Detector Spectral Pairing-Related Inaccuracies in Pulse Oximetry: Evaluation of the Wavelength Shift"? If not so, could you tell me the estimating algorithm?
Second, what precautions should I take to measure SpO2 accurately?
Third, how much measurement time is required to measure SpO2 using AFE4404 sensors?