Specialisation of the general signal processing operator sig.autocor focused on music theory.

Same as in sig.autocor.

mus.autocor(…,'Resonance',r) multiplies the autocorrelation curve with a resonance curve that emphasizes pulsations that are more easily perceived. Two resonance curves are proposed:

• r = 'ToiviainenSnyder' (Toiviainen & Snyder 2003) (default value if 'Resonance' option toggled on),
• r = 'vanNoorden' (van Noorden & Moelants, 1999).

  This option should be used only when the input of the sig.autocor function is an amplitude envelope, i.e., a ´sig.envelope´ object.

Resonance curves 'ToiviainenSnyder' (left) and 'vanNoorden' (right)

Besides those available in sig.autocor:

• 'Resonance': indicates the resonance curve that has been applied, or empty string if no resonance curve has been applied.