Extraction of data from a heat map in Audio spectrum

[Jens Noriʇzsɔɥ]

Ad more peak frequencies: it is very easy to determine a global maximum. For local maxima, we would have to go to some length to avoid picking up parts of the global maximum’s flanks – or some noise that leads to “virtual” side maxima here. Technically, it looks possible, however, I do not know when we would find time for this…