Module makenotation 

Measures, ties, rests, voices, beams and stems worked out for a score that does not say them. Working out what a score leaves unsaid: music21’s stream.makeNotation.

What a reader of another format needs is here: cutting a line into measures, tying what runs past a barline, filling measures out with rests, putting overlapping notes in voices, moving notes onto a grid, beaming the notes of each measure by its meter and pointing the stems of each beamed group one way.

make_notation is the whole of it in music21’s order, for a score that says only what sounds: measures, accidentals, ties, tuplets completed and bracketed, beams. split_at_durations cuts a length no single note value writes into values that do.

Constants

QUANTIZATION_DIVISORS

The divisions of a quarter music21 quantizes to unless told otherwise: sixteenths and triplet eighths.

Functions

consolidate_completed_tuplets

Joins a run of tied notes, or of rests, that fills one tuplet exactly into one note of the tuplet’s whole length: music21’s consolidateCompletedTuplets with onlyIfTied, on one line. Whether anything was joined.

make_accidentals

Decides which accidentals are written, measure by measure: music21’s makeAccidentals on a part.

make_beams

Beams the notes of every measure of a part by the meter in force, and points the stems of each beamed group one way: music21’s makeBeams.

make_measures

Cuts a stream into measures by the meters it holds: music21’s makeMeasures.

make_measures_by

make_measures by meters given rather than found: music21’s makeMeasures with a meterStream. Each meter is given with the offset it takes over at; with none given the stream’s own are used.

make_notation

Works out what a score leaves unsaid, as music21’s makeNotation does, changing the stream in place.

make_ornamental_accidentals

Decides whether each accidental this note’s ornaments imply is shown, and writes it onto the ornament: music21’s makeOrnamentalAccidentals.

make_rests

Fills every measure of a part with rests up to its bar’s length, its voices too: music21’s makeRests with fillGaps=True and timeRangeFromBarDuration=True.

make_ties

Cuts every note that runs past its barline and ties the pieces, the second going to the start of the next measure: music21’s makeTies.

make_tuplet_brackets

Marks the first and last of each run of tuplets in a line of notes as where its bracket starts and stops: music21’s makeTupletBrackets.

make_voices

Puts a measure’s notes into voices where they overlap: music21’s makeVoices with fillGaps=False.

op_frac

Snaps an offset as music21’s opFrac does, to the nearest fraction with a denominator up to 65535, so that three triplets end on the beat. A negative offset is snapped as its size is.

quantize

Moves every offset and length in a stream onto the nearest place a quarter divides into: music21’s quantize, for the stream’s own elements.

realize_ornaments

Every ornament the stream carries played out, in a stream of its own: music21’s stream.makeNotation.realizeOrnaments.

set_stem_direction_for_beam_groups

Points the stems of each beamed group the way its first and last pitches lie about the middle line of the clef in force: music21’s setStemDirectionForBeamGroups.

split_at_durations

Cuts every note, chord and rest whose length no single written value writes into pieces that each are one, tied: music21’s splitAtDurations with recurse.

split_elements_to_complete_tuplets

Cuts the note or rest after an unfinished tuplet where that finishes it: music21’s splitElementsToCompleteTuplets, on one line.