Abstract: The present disclosure relates to systems and methods for detectingfeatures ofa signal. According to embodiments, by transposing segments of a signal, suchas segmentsrepresenting pulses in a PPG signal, such that they are stacked next to eachother, variouscharacteristics about the signal may be discerned such as information aboutrepetitive featuresof the signal. According to an embodiment, from a PPG signal respirationinformation may bedetermined about individual breaths, blood pressure changes may be determined,and informa-tionabout other physiological parameters affecting the PPG signal may bedetermined.