Note

Note include NoteOn and NoteOff two event. .. The location of NoteOn and NoteOff is determined by the two properties of Note, location and length.

Import

>>> from infmidi import Note

Initialize

C4=60 or 72?

pass

There are different ways to initialize a Note.

>>> Note('A4')
Note(name="A4", value=69, freq=440.00, location=0.00, length=1.00, velocity=127, channel=0)
>>> Note('A4') == Note(69) == Note(440.)
True

Hint

The three attributes (name, value and freq) are associated. Change one of them, and the other two will also change.

Manipulate

Use - or + to change the value.

>>> Note('A4') - 12 == Note('A3')
True
>>> Note('A4') + 12 == Note('A5')
True
>>> Note('A4') + 8
Note(name="F5", value=77, freq=698.46, location=0.00, length=1.00, velocity=127, channel=0)

Use >> or << to change the location.

>>> Note('A4', location=2.) >> 4
Note(name="A4", value=69, freq=440.00, location=6.00, length=1.00, velocity=127, channel=0)
>>> Note('A4', location=4.) << 2
Note(name="A4", value=69, freq=440.00, location=2.00, length=1.00, velocity=127, channel=0)

Use ^ and * to zoom and scale the note.

>>> Note('A4', location=2., length=3.) ^ 3
Note(name="A4", value=69, freq=440.00, location=6.00, length=9.00, velocity=127, channel=0)
>>> Note('A4', location=2., length=3.) * 3
Note(name="A4", value=69, freq=440.00, location=2.00, length=9.00, velocity=127, channel=0)

Use @ to select the channel.

>>> Note('A4', channel=7)
Note(name="A4", value=69, freq=440.00, location=0.00, length=1.00, velocity=127, channel=7)
>>> Note('A4', channel=7) @ 12
Note(name="A4", value=69, freq=440.00, location=0.00, length=1.00, velocity=127, channel=12)

Hint

All operators above have an inpalce version and an method version, click here to see the cheat sheet.

Get message

>>> note = Note('A4') >> 4
>>> note.msg_on
Message('note_on', channel=0, note=69, velocity=127, time=1920)
>>> note.msg_off
Message('note_on', channel=0, note=69, velocity=0, time=2400)
>>> note.msgs
[ Message('note_on', channel=0, note=69, velocity=127, time=1920), Message('note_on', channel=0, note=69, velocity=0, time=2400)]