F is a musical note, the fourth above C or fifth below C. It is the fourth note and the sixth semitone of the solfège. It is also known as fa in fixed-do solfège. It it enharmonic equivalent with E (E-sharp) and G (G-double flat), amongst others.
When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of Middle F (F4) is approximately 349.228 Hz.[1] See pitch (music) for a discussion of historical variations in frequency.
| Scientific designation | Helmholtz designation | Octave name | Frequency (Hz) | |
|---|---|---|---|---|
| F−1 | F͵͵͵ or ͵͵͵F or FFFF | Octocontra | ||
| F0 | F͵͵ or ͵͵F or FFF | Subcontra | ||
| F1 | F͵ or ͵F or FF | Contra | ||
| F2 | F | Great | ||
| F3 | f | Small | ||
| F4 | One-lined | |||
| F5 | Two-lined | |||
| F6 | Three-lined | |||
| F7 | Four-lined | |||
| F8 | Five-lined | |||
| F9 | Six-lined | |||
| F10 | Seven-lined |
E (German: Eis) is a common enharmonic equivalent of F, but is not regarded as the same note. E is commonly found before F in the same measure in pieces where F is in the key signature, in order to represent a diatonic, rather than a chromatic semitone; writing an F with a following F is regarded as a chromatic alteration of one scale degree. Though E and F sound the same in any 12-tone temperament, other tunings may define them as distinct pitches.