Module duration 

Rhythmic duration primitives.

Structs

Duration

Rhythmic duration measured in quarter lengths.

Tuplet

A length written as a tuplet: actual notes of one written value in the time of normal of them.

Enums

DurationType

A note-value name, as music21’s duration.typeToDuration defines them.

Functions

quarter_conversion

The written note values a length is made of and the tuplet, if any, they are written inside: music21’s quarterConversion.

quarter_length_to_closest_type

Returns the note-value type closest to a quarter length, and whether it is exact, as music21’s quarterLengthToClosestType does: a length between two types reports the longer one, so a triplet quarter is an inexact eighth.

quarter_length_to_non_power_of_2_tuplet

The one enormous tuplet music21 falls back on for a length no tie of written values reaches: its quarterLengthToNonPowerOf2Tuplet.

quarter_length_to_tuplet

The tuplets a length can be written as, shortest note value first: music21’s quarterLengthToTuplet, stopping after max_to_return of them.