Separation of Individual Instrumental Sounds in Monaural Music Signals Applying a Modified Wiener Filter with a Parameter Identification Technique on the Time-frequency Plane

Abstract

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 that is a windowed Wiener filter based on current statistics of the mixture sequentially evaluated in the frequency-domain.