How to plot the power envelope of a .wav file
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I need the codings done in matlab editor. What i basically need to do is, input a piano recording (.wav format) and obtain the power envelope of it, so I can clearly differentiate the onsets and offsets of notes. once this is done, i want to separate these onsets into different windows and perform FFT. My main issue is to get the power envelope. can anyone help me with the codings? Thanx in advance.
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Walter Roberson
le 13 Juin 2013
Notice "So onsets can be determined simply by checking the local minima", and notice "However, this doesn't mean we cannot decide where an onset is". The sentences after that talk about how to deduce onsets when they are not previously known.
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