Module fixer 

A score read by optical music recognition corrected by a performance of it: music21’s alpha.analysis.fixer.

The two are aligned by StreamAligner, its target the performance (MIDI) and its source the reading (OMR), and each fixer reads the changes the alignment found: fix_enharmonics respells a note read with the wrong accidental, delete_measures takes out a measure holding a note read wrong, and an OrnamentFixer writes the trill or turn a performance plays where the reading has a single note.

Structs

OrnamentFixer

Writes the ornaments a performance plays on the notes of a reading that has none: music21’s OrnamentFixer.

Enums

EnharmonicFix

What becomes of one note read where the performance plays another spelling of it: the write music21’s EnharmonicFixer makes for one change.

Recognizer

A recognizer an OrnamentFixer tries.

Functions

delete_measures

Takes out of the reading each measure holding a note changed from the performance’s: music21’s DeleteFixer, which “does really weird things still”.

enharmonic_fix

What becomes of one note read, given the note the performance plays and what the alignment made of the pair: nothing where the spelling read stands.

fix_enharmonics

Respells each note of the reading the performance plays enharmonically to it: music21’s EnharmonicFixer.

interval_too_big

Whether two notes are too far apart to be two spellings of one sound: music21’s intervalTooBig, which reads the interval class and not the interval itself.

notes_within_duration

The notes, rests and chords from one on, as many as fit in a length, each a copy: music21’s getNotesWithinDuration, read from the stream directly holding the first.