1. A method for assessing a plethysmography signal to provide an output related to a physiological condition, comprising using a processor of a pulse oximeter monitor to perform the steps of: receiving the plethysmography signal from a pulse oximeter sensor applied to a patient, wherein the pulse oximeter sensor comprises an encoder configured to transmit information indicative of a type of the pulse oximeter sensor to the pulse oximeter monitor; processing the plethysmography signal using a continuous wavelet transform; comparing a result of the continuous wavelet transform to a library comprising a plurality of wavelet signatures, the plurality of wavelet signatures comprising previously-determined patterns that correspond to physiological conditions and being categorized based on characteristics of a pulse oximeter system; identifying one or more wavelet signatures of the plurality of wavelet signatures in the library that have sensor specifications similar to the pulse oximeter sensor, wherein comparing the result comprises comparing the result to the one or more identified wavelet signatures to determine the physiological condition of the patient; and displaying the output related to the physiological condition of the patient.