The idea was to keep a sort of perceptually equivalent scale, so 1dB is 1semitone of pitch is 1 semitone of centroid. Simple to understand the relations in a musician space, but timbre is super limited there… trying to shrink an MFCC space to 1D of 100points (the range in dB and semitone of useful loud and pitch) is still on the table, via kmeans first. This will happen when I get the headspace which is soon I hope