Can someone tell me what the AC1 of yin means (papers?) and how to interpret the values of AC1 that comes out of something like mubu.process slice:yin ?
ac1 is the first order autocorrelation, and corresponds to spectral tilt, related to vocal or instrumental effort. Very effective e.g. for trumpet “brassyness”.
See Cheveigné and Kawahara, YIN: a fundamental frequency estimator for speech and music, JASA 2002.
1 Like