Name
This interval is called: Diminished Fourth
Abbreviation
You can use the somewhat shorter name "d4" to indicate a Diminished Fourth.
Construct
How to build a diminished fourth interval?
To construct an interval correctly you must always use two steps.
- Count the amount of naturals used
- Count the steps between de two notes
At first, and with easy intervals, this may seem unnecessary, but when advancing to more dificult intervals and musical keys they will become more mandatory.
The following example is for a diminished fourth from C3. Outcome: Fb3
1.
A Diminished Fourth uses
4 naturals.
Example: C3 ↠ D3 ↠ E3 ↠ F3
Example: C3 ↠ D3 ↠ E3 ↠ F3
2.
A Diminished Fourth has
4 semitones between the notes.
Example: C3 ↠ Db3 ↠ D3 ↠ Eb3 ↠ E3 ↠ F3 ↠ Gb3 ↠ G3 ↠ Ab3 ↠ A3 ↠ Bb3 ↠ B3 ↠ C4 ↠ Db4 ↠ D4 ↠ Eb4 ↠ E4 ↠ F4 ↠ Gb4 ↠ G4 ↠ Ab4 ↠ A4 ↠ Bb4 ↠ B4 ↠ C5
Example: C3 ↠ Db3 ↠ D3 ↠ Eb3 ↠ E3 ↠ F3 ↠ Gb3 ↠ G3 ↠ Ab3 ↠ A3 ↠ Bb3 ↠ B3 ↠ C4 ↠ Db4 ↠ D4 ↠ Eb4 ↠ E4 ↠ F4 ↠ Gb4 ↠ G4 ↠ Ab4 ↠ A4 ↠ Bb4 ↠ B4 ↠ C5
Cheatsheet
Tranposed for each note
You can use the following cheatsheet to check the Diminished Fourth for
each root note.
Cb3 ↠ Fbb3
C3 ↠ F3
C3 ↠ Fb3
C3 ↠ F3
C#3 ↠ F3
C3 ↠ F3
Db3 ↠ Gbb3
D3 ↠ G3
D3 ↠ Gb3
D3 ↠ G3
D#3 ↠ G3
D3 ↠ G3
Eb3 ↠ Abb3
E3 ↠ A3
E3 ↠ Ab3
E3 ↠ A3
E#3 ↠ A3
E3 ↠ A3
Fb3 ↠ Bbbb3
F3 ↠ Bb3
F3 ↠ Bbb3
F3 ↠ B3
F#3 ↠ Bb3
F3 ↠ B3
Gb3 ↠ Cbb4
G3 ↠ C4
G3 ↠ Cb4
G3 ↠ C4
G#3 ↠ C4
G3 ↠ C4
Ab3 ↠ Dbb4
A3 ↠ D4
A3 ↠ Db4
A3 ↠ D4
A#3 ↠ D4
A3 ↠ D4
Bb3 ↠ Ebb4
B3 ↠ E4
B3 ↠ Eb4
B3 ↠ E4
B#3 ↠ E4
B3 ↠ E4