Septimal chromatic semitone
Encyclopedia
In music
, a septimal chromatic semitone or minor semitone is the interval 21:20 . It is about 84.47 cents
. The septimal chromatic semitone may be derived from the harmonic series
as the interval between the twentieth and twenty-first harmonics.
The septimal chromatic semitone equals a just chromatic semitone plus a septimal semicomma
(the interval 126:125).
When added to the 15:14 semitone, the 21:20 semitone and 28:27 semitone produce the 9:8 tone (major tone) and 10:9 tone (minor tone), respectively.
Music
Music is an art form whose medium is sound and silence. Its common elements are pitch , rhythm , dynamics, and the sonic qualities of timbre and texture...
, a septimal chromatic semitone or minor semitone is the interval 21:20 . It is about 84.47 cents
Cent (music)
The cent is a logarithmic unit of measure used for musical intervals. Twelve-tone equal temperament divides the octave into 12 semitones of 100 cents each...
. The septimal chromatic semitone may be derived from the harmonic series
Harmonic series (music)
Pitched musical instruments are often based on an approximate harmonic oscillator such as a string or a column of air, which oscillates at numerous frequencies simultaneously. At these resonant frequencies, waves travel in both directions along the string or air column, reinforcing and canceling...
as the interval between the twentieth and twenty-first harmonics.
The septimal chromatic semitone equals a just chromatic semitone plus a septimal semicomma
Septimal semicomma
In music, the ratio 126/125 is called the septimal semicomma . It is also called the starling comma after its use in starling temperament, as well as the small septimal comma...
(the interval 126:125).
When added to the 15:14 semitone, the 21:20 semitone and 28:27 semitone produce the 9:8 tone (major tone) and 10:9 tone (minor tone), respectively.