Music Instrument Estimation and Multiple Sound Source Analysis from Monophonic inputs

In this study, we propose a method for multiphonic analysis using Non-Negative Matrix Factor 2-D Deconvolution (NMF2D) that has versatility and does not limit the number of instruments used in a music piece. This method solves the limitation of instrument by performing instrument estimation on the basis matrix decomposed by NMF2D. Experiments were conducted on a relatively simple piece of music with a short performance time. The instrumental estimation performance and the pitch estimation performance were not sufficient. Issues remain in the classification accuracy of the instrument estimation and the parameters of the Constant-Q transformation.