A written duration: a base value, optional augmentation dots, and an optional tuplet ratio. Its length is base * (2 - 2^-dots) * normal / actual.
base * (2 - 2^-dots) * normal / actual
Optional
Augmentation dots, 0 when absent; up to four are accepted.
A written duration: a base value, optional augmentation dots, and an optional tuplet ratio. Its length is
base * (2 - 2^-dots) * normal / actual.