Name
This interval is called: Diminished tredecime
Abbreviation
You can use the somewhat shorter name "m13" to indicate a Diminished tredecime.
Chord name
Flat thirteenth
for iOS and Android
Construct
How to build a diminished tredecime 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 tredecime from C3. Outcome: Ab4
1.
A Diminished tredecime uses
13 naturals.
Example: C3 ↠ D3 ↠ E3 ↠ F3 ↠ G3 ↠ A3 ↠ B3 ↠ C4 ↠ D4 ↠ E4 ↠ F4 ↠ G4 ↠ A4
Example: C3 ↠ D3 ↠ E3 ↠ F3 ↠ G3 ↠ A3 ↠ B3 ↠ C4 ↠ D4 ↠ E4 ↠ F4 ↠ G4 ↠ A4
2.
A Diminished tredecime has
20 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
Example: C3 ↠ Db3 ↠ D3 ↠ Eb3 ↠ E3 ↠ F3 ↠ Gb3 ↠ G3 ↠ Ab3 ↠ A3 ↠ Bb3 ↠ B3 ↠ C4 ↠ Db4 ↠ D4 ↠ Eb4 ↠ E4 ↠ F4 ↠ Gb4 ↠ G4 ↠ Ab4
Cheatsheet
Tranposed for each note
You can use the following cheatsheet to check the Diminished tredecime for
each root note.
Cb3 ↠ Abb4
C3 ↠ A4
C3 ↠ Ab4
C3 ↠ A4
C#3 ↠ A4
C3 ↠ A4
Db3 ↠ Bbb4
D3 ↠ B4
D3 ↠ Bb4
D3 ↠ B4
D#3 ↠ B4
D3 ↠ B4
Eb3 ↠ Cb5
E3 ↠ C5
E3 ↠ C5
E3 ↠ C5
E#3 ↠ C#5
E3 ↠ C5
Fb3 ↠ Dbb5
F3 ↠ D5
F3 ↠ Db5
F3 ↠ D5
F#3 ↠ D5
F3 ↠ D5
Gb3 ↠ Ebb5
G3 ↠ E5
G3 ↠ Eb5
G3 ↠ E5
G#3 ↠ E5
G3 ↠ E5
Ab3 ↠ Fb5
A3 ↠ F5
A3 ↠ F5
A3 ↠ F5
A#3 ↠ F#5
A3 ↠ F5
Bb3 ↠ Gb5
B3 ↠ G5
B3 ↠ G5
B3 ↠ G5
B#3 ↠ G#5
B3 ↠ G5