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Uploaded on Nov 23, 2009
http://simulations.narod.ru/ This is acustic piano notes spectrums display. cross is expected position of the fundamental frequency. x-axis is frequency in Hz. On the top of the graph is curent note symbol where number is number of octeve. It is possible to see that fundmetal frequency is big enough only at range about A2 - G5. It is analysis for notes detection.