mus.tonalcentroid
Calculates the 6-dimensional tonal centroid vector from the chromagram. It corresponds to a projection of the chords along circles of fifths, of minor thirds, and of major thirds (Harte and Sandler, 2006).
mus.tonalcentroid accepts either:
- mus.Chromagram objects,
- sig.Spectrum objects,
- sig.signal objects , where the audio waveform can be segmented (using sig.segment), decomposed into channels (using sig.filterbank), and/or decomposed into frames (using sig.frame),
- file name or the ‘Folder’ keyword.
mus.tonalcentroid can return several outputs:
- the tonal centroid itself, and
- the mus.Chromagram data.
mus.tonalcentroid(..., ‘Frame’, ...) performs first a frame decomposition, with by default a frame length of 743 ms and a hop factor of 10% (74.3 ms). For the specification of other frame configuration using additional parameters, cf. sig.frame
