DL-Chord
概要
コードを解析するライブラリ。 コード構成音の解析や、移調、ディグリーなどが使用可能です。
インストール
$ pip install dlchordコード作成
>>> from dlchord import Chord
>>> chord = Chord("C")
>>> chord
<Chord: C>コード検索
>>> from dlchord import note_to_chord
>>> chords = note_to_chord(["C", "E", "G"])
>>> chords
[<Chord : C>]
>>> chords = note_to_chord(["B", "Db", "F", "A"])
>>> chords
[<Chord: Faug/B>, <Chord: Dbaug/B>, <Chord: Aaug/B>]
>>> chords = note_to_chord(["B", "Db", "F", "A"], scale="#")
>>> chords
[<Chord: Faug/B>, <Chord: C#aug/B>, <Chord: Aaug/B>]ルート音取得
>>> from dlchord import Chord
>>> chord = Chord("C")
>>> print(chord.root())
0
>>> from dlchord import Chord
>>> chord = Chord("C/G")
>>> print(chord.root())
0ベース音取得
>>> from dlchord import Chord
>>> chord = Chord("C")
>>> print(chord.bass())
0
>>> from dlchord import Chord
>>> chord = Chord("C/G")
>>> print(chord.bass())
7移調
>>> from dlchord import Chord
>>> chord = Chord("C")
>>> t_chord = chord.transpose(steps=1)
>>> t_chord
<Chord: Db>ディグリー
>>> from dlchord import Chord
>>> chord = Chord("C")
>>> print(chord.degree(key=0)) # C調
I構成音取得
>>> from dlchord import Chord
>>> chord = Chord("C")
>>> cons = chord.getNotes(categorical=False)
>>> print(str(cons))
[0 4 7]
>>> cons = chord.getNotes(categorical=True)
>>> print(str(cons))
[2. 0. 0. 0. 1. 0. 0. 1. 0. 0. 0. 0.]
# ベース音 2
# 構成音 1
# 非構成音 0コードを比較
>>> from dlchord import Chord
>>> Chord("C") == Chord("C")
True
>>> Chord("C") == Chord("C7")
False
>>> Chord("C#") == Chord("Db")
True
>>> Chord("F/D") == Chord("Dm7")
True
>>> Chord("C#dim7/A") == Chord("A7(b9)")
True
