midi_notes

Provides various tables (dicts) and functions for looking up / converting note names, scales, midi note pitch, frequencies, an a "Note" class which allows you constuct / represent Notes by MIDI pitch, note name or frequency.

Note class

You can construct a Note with either a (str) note name, (int) midi pitch, or (float) frequency.

from midi_notes import *

>>> note = Note('C4')
>>> print(f'"{note.name}" has midi pitch {note.pitch}')
"C4" has MIDI pitch 60

>>> print(f'"{note.name}" is in octave {note.octave}, and has a value of {note.interval_above_c}')
"C4" is in octave 4, and has a value of 0

>>> print(f'"{note.name}" has a frequency of {note.frequency}Hz')
"C4" has a frequency of 261.626Hz

>>> frequency = 444.4
>>> note = Note(frequency)
>>> print(f'"{note.name}" with a frequency of {note.frequency}Hz is closest to {frequency}Hz')
"A4" with a frequency of 440.0Hz is closest to 444.4Hz

Sharps and Flats

When getting the "name" property of a Note which is an incidental, you can decide whether to retrieve the "sharp" or "flat" version of the note name ("D♯" is the same pitch as "E♭") by setting the "prefer_flats" property.

>>> note = Note('D#5')
>>> print(f'MIDI pitch {note.pitch} is "{note.name}"')
MIDI pitch 75 is "D#5"

>>> note.prefer_flats = True
>>> print(f'MIDI pitch {note.pitch} is also "{note.name}"')
MIDI pitch 75 is also "Eb5"

Incidentals styles

You can also choose how to render incidentals:

>>> note = Note('D#5')

>>> note.incidentals_style = Note.INCIDENTAL_ASCII
>>> print(f'INCIDENTAL_ASCII: "{note.name}"')
INCIDENTAL_ASCII: "Eb5"

>>> note.incidentals_style = Note.INCIDENTAL_UNICODE
>>> print(f'INCIDENTAL_UNICODE: "{note.name}"')
INCIDENTAL_UNICODE: "E♭5"

>>> note.incidentals_style = Note.INCIDENTAL_NAMES
>>> print(f'INCIDENTAL_NAMES: "{note.name}"')
INCIDENTAL_NAMES: "E flat 5"

Constants

The following constants are defined:

MIDDLE_C

CHAR_FLAT
CHAR_FLAT_ASCII
CHAR_FLAT_UNICODE
CHAR_SHARP
CHAR_SHARP_ASCII
CHAR_SHARP_UNICODE

NOTE_TABLE
NOTE_NAMES
NOTE_PITCHES
NOTE_FREQUENCIES
NOTE_OFFSETS
NOTE_NAME_SHARPS
NOTE_NAME_FLATS

MAJOR_SCALE_INTERVALS
MINOR_SCALE_INTERVALS
COMMON_MAJOR_KEYS
MAJOR_SCALES
COMMON_MINOR_KEYS
MINOR_SCALES

DURATION_NAMES
DURATION_SYMBOLS
DURATION_FRACTIONS

MIDI_NOTE_OFF
MIDI_NOTE_ON
MIDI_POLY_PRESSURE
MIDI_CONTROL_CHANGE
MIDI_PROGRAM_SELECT
MIDI_PRESSURE
MIDI_PITCH_BEND
MIDI_PROGRAM_NAMES

MIDI_DRUM_IDS
MIDI_DRUM_PITCHES
MIDI_DRUM_NAMES