The second pair of note numbers and durations describes the space that That a complete collection of this tuplet will be visually represented asĪttributes are numberNotesActual, durationActual. “actual.” In a standard 8th note triplet this would be 3, eighth, meaning Within the tuplet, or the value presented by the context. The first pair of note numbers and durations describes the representation The primary representation uses two pairs of note numbers and durations. It expresses a ratio that modifies duration values and are stored inĭuration objects in a “tuple” (immutable list since there can be nested Tuplet ( numberNotesActual : int = 3, numberNotesNormal : int = 2, durationActual : Optional ] ] = None, durationNormal : Optional ] ] = None, *, tupletId : int = 0, nestedLevel : int = 1, type : Optional ] = None, bracket : Literal = True, placement : Literal = 'above', tupletActualShow : Literal = 'number', tupletNormalShow : Optional ] = None, ** keywords ) ¶Ī tuplet object is a representation of a musical tuplet (like a triplet). expressionIsInferred False Tuplet ¶ class music21.duration. Ifįalse, then the type, dots, and tuplets are considered immutable. Is True then music21 can change it according to complex. For instance the duration of 0.5 is generallyĪn eighth note, but in the middle of a triplet group might beīetter written as a dotted-eighth triplet. Number rather than a type and thus can be changed to anotherĮxpression. expressionIsInferred ¶īoolean indicating whether this duration was created from a components (DurationTuple(type='quarter', dots=1, quarterLength=1.5), DurationTuple(type='eighth', dots=1, quarterLength=0.75), DurationTuple(type='eighth', dots=1, quarterLength=0.75), DurationTuple(type='16th', dots=1, quarterLength=0.375))ĭuration instance variables Duration.
SupportedĪrguments are ‘type’, ‘dots’, ‘quarterLength’, or ‘components’.Įxample 1: a triplet eighth configured by quarterLength: Then the Duration() is configured according to those arguments. If one or more named arguments are passed Half notes, 0.5 for eighth notes, 0.75 for dotted eighth notes, 0.333333333įor a triplet eighth, etc.). Single argument is a number then it is assumed to be a quarterLength (2 for If a single argument is passed to Duration() and it is a string, then it isĪssumed to be a type, such as ‘half’, ‘eighth’, or ‘16th’, etc. Some Duration objects are not expressible as a single notation unit. Notes, or may be used to split duration across barlines or beam groups. Multiple DurationTuples in a single Duration may be used to express tied Otherwise, expressionIsInferred is set to False, indicating that (such as splitElementsToCompleteTuplets())Ĭan express this Duration using another combination of components that sums to the A Duration created by setting quarterLength sets the attributeĮxpressionIsInferred to True, which indicates that callers Half tied to quintuplet sixteenth note” or simply “quarter note.”Ī Duration object is made of one or more immutable DurationTuple objects stored on theĬomponents list. For instance, “57 quarter notes” or “dotted Represents a span of musical time measurable in terms of quarter notes (or Duration ( typeOrDuration : t.Union = None, *, type : t.Optional = None, dots : t.Optional = None, quarterLength : t.Optional = None, durationTuple : t.Optional = None, components : t.Optional ] = None, client : t.Optional = None, ** keywords ) ¶ĭurations are one of the most important objects in music21. numberNotesNormal 2 Duration ¶ class music21.duration.
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