Repetition is a core principle in music. This is especially true for popular songs, generally
marked by a noticeable repeating musical structure, over which the singer performs varying
lyrics. On this basis, we propose a simple method for separating music and voice, by
extraction of the repeating musical structure. First, the period of the repeating structure is
found. Then, the spectrogram is segmented at period boundaries and the segments are
averaged to create a repeating segment model. Finally, each time-frequency bin in a …

Repetition is a fundamental element in generating and perceiving structure. In audio,
mixtures are often composed of structures where a repeating background signal is
superimposed with a varying foreground signal (eg, a singer overlaying varying vocals on a
repeating accompaniment or a varying speech signal mixed up with a repeating background
noise). On this basis, we present the REpeating Pattern Extraction Technique (REPET), a
simple approach for separating the repeating background from the non-repeating …