Figure 6
From: Transcribing Bach chorales: Limitations and potentials of non-negative matrix factorisation
Plots of true positive obtained from syntheised guitar sound (first row) and from acoustic guitar sound (third row). The true positive values are overlaid on top of the original chorale: overlay of synthesised guitar sound (second row), overlay of acoustic guitar sound (fourth row). Note that in the overlaid tp on the original chorale, the colour code of the correct transcription (tp) is presented in white colour and the missing transcription (fn) is presented in gray colour.