The parameters for the proposed method were examined over λ P t0, 1, 5, 10, 50, 100u and µ P t0, 1, 5, 10, 50, 100u for both KL divergence and Euclidean distance. We experimentally found that parameter λ out of this range either had negligible effects or overly smoothed spectra. Such over-smoothing deteriorates the spectral resolution and causes false peaks. The parameters for the moving average (the window size) and the 1D Gaussian smoothing (the standard deviation of the Gaussian filter applied around a channel) were both varied over a set .