1. A computer-implemented method for determining a “best match” of an input signal of interest from a set of candidate signals, wherein two or more of the candidate signals are uncorrelated, the method comprising: determining a unified signal transform from the set of candidate signals; applying the unified signal transform for at least one generalized frequency to each of the set of candidate signals to calculate a corresponding at least one generalized frequency component value for each of the set of candidate signals; receiving the input signal of interest; applying the unified signal transform for the at least one generalized frequency to the input signal of interest to calculate a corresponding at least one generalized frequency component value for the input signal of interest; determining a best match between the at least one generalized frequency component value of the input signal of interest and the at least one generalized frequency component value of each of the set of candidate signals; and outputting information indicating a best match candidate signal from the set of candidate signals.