Real-time estimation of respiratory rate from a photoplethysmogram using an adaptive lattice notch filter

Last Updated on April 3, 2022 by pg@petergamma.org

There are several papers available for respiratory rate estimation in real-time, for instance:

but I could not find a commercially available device which can do this:

Calculating Respiratory Rate from PPG or ECG signal in Python

Peter H. Charlton told me, that his Matlab Toolbox for respiratory rate:

can also run in real-time.