1. A system comprising: a plurality of sensors, each monitoring at least one parameter associated with the system; a controller configured to receive a signal representing the monitored at least one parameter from each of the plurality of sensors and adjust a function of the system based on the received signals; and respective discrete wavelet transform components associated with each of the plurality of sensors, each of the discrete wavelet transform components configured to provide a set of discrete wavelet transform coefficients representing a content of the signal for its associated sensor to a discrete wavelet transform monitoring component.