Figure 1
From: Synthetic photoplethysmogram generation using two Gaussian functions
The main idea of the proposed modeling method. The blue color represents the systolic wave, and the red color represents the diastolic wave. (a) One-beat PPG waveform. (b) The circular motion principle. \(\omega\) is the angular velocity; it is fixed per pulse, but changes with different pulses. This figure shows how the circular motion will be used to generate a PPG waveform in a periodical manner.
