Musical note
D♭ (D-flat) is a musical note lying a diatonic semitone above C and a chromatic semitone below D. It is thus enharmonic to C♯. In the French solfège it is known as re bémol. It is the second semitone of the solfège.
When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of middle D♭ (or D♭4) is approximately 277.183 Hz.[1] See pitch (music) for a discussion of historical variations in frequency.
Designation by octave
Scientific designation
|
Helmholtz designation
|
Octave name
|
Frequency (Hz)
|
D♭−1 |
D♭͵͵͵ or ͵͵͵D♭ or DDDD♭ |
Subsubcontra |
8.662
|
D♭0 |
D♭͵͵ or ͵͵D♭ or DDD♭ |
Subcontra |
17.324
|
D♭1 |
D♭͵ or ͵D♭ or DD♭ |
Contra |
34.648
|
D♭2 |
D♭ |
Great |
69.296
|
D♭3 |
d♭ |
Small |
138.591
|
D♭4 |
d♭′ |
One-lined |
277.183
|
D♭5 |
d♭′′ |
Two-lined |
554.365
|
D♭6 |
d♭′′′ |
Three-lined |
1108.731
|
D♭7 |
d♭′′′′ |
Four-lined |
2217.461
|
D♭8 |
d♭′′′′′ |
Five-lined |
4434.922
|
D♭9 |
d♭′′′′′′ |
Six-lined |
8869.844
|
D♭10 |
d♭′′′′′′′ |
Seven-lined |
17739.688
|
Scales
Common scales beginning on D♭
References
See also