2019 Volume 2019 Pages 153-158
A signal processor which is suitable for distilling a melody played by a particular instrument from a music ensemble is discussed in this report. The processor separates a monaural music sound into individual tones of every pitch with a particular timbre, combinations of which provide melodies played by an instrument. A mixture of strongly correlated sounds such as the same pitch tones by different instruments can be processed by the proposed technique. It is a modified Wiener filter for the mixture, the current statistics of which are sequentially evaluated in the chromatic scale with the Gabor wavelet transform.
