Figure 11From: Percussive/harmonic sound separation by non-negative matrix factorization with smoothness/sparseness constraintsA harmonic excerpt, played by guitar instrument, extracted from the file T2_02 in Table3. It can be observed that the harmonic onsets (vertical lines at the beginning of some notes) in the original harmonic signal (a) do not appear in the harmonic signal (b) output of the proposed method.Back to article page