Eleventh

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This article is about an eleventh in music theory. For the chord, see Eleventh chord. For the character, see Eleventh Doctor. For the century, see 11th century. For the US constitution amendment, see Eleventh Amendment to the United States Constitution. For 11 July in Northern Ireland, see Eleventh night.
Perfect eleventh on C. Play (help·info)
musical interval
perfect eleventh
Inverseperfect fifth
Name
Other namesCompound fourth
AbbreviationP11
Size
Semitones17
Cents
Equal temperament1700.0
Augmented eleventh on C. Play (help·info)
musical interval
augmented eleventh
Inversediminished fifth
Name
AbbreviationA11
Size
Semitones18
Cents
Equal temperament1800.0

In music or music theory an eleventh play (help·info) is the note eleven scale degrees from the root of a chord and also the interval between the root and the eleventh. The interval can be also described as a compound fourth, spanning an octave plus a fourth.

Since there are only seven degrees in a diatonic scale the eleventh degree is the same as the subdominant.

The eleventh is considered highly dissonant with the third.

A perfect eleventh is an eleventh which spans exactly 17 semitones. It can be also described as a compound perfect fourth, spanning an octave plus a perfect fourth.

See also[]

  • Eleventh chord
  • Suspended chord

Sources[]

  • v
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Chord factors
  • Root
  • Third
  • Fifth
  • Seventh
  • Ninth
  • Eleventh
  • Thirteenth
  • Fifteenth
  • (Bass note)
  • v
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Intervals
Twelve-
semitone
(post-Bach
Western)
Numbers in brackets
are the number of
semitones in the
interval.
Perfect
  • unison (0)
  • fourth (5)
  • fifth (7)
  • octave (12)
Major
  • second (2)
  • third (4)
  • sixth (9)
  • seventh (11)
Minor
  • second (1)
  • third (3)
  • sixth (8)
  • seventh (10)
Augmented
  • unison (1)
  • second (3)
  • third (5)
  • fourth (6)
  • fifth (8)
  • sixth (10)
  • seventh (12)
Diminished
  • second (0)
  • third (2)
  • fourth (4)
  • fifth (6)
  • sixth (7)
  • seventh (9)
  • octave (11)
Compound
  • ninth (13 or 14)
  • tenth (15 or 16)
  • eleventh (17 or 18)
  • twelfth (18 or 19)
  • thirteenth (20 or 21)
  • fourteenth (22 or 23)
  • fifteenth (24)
Other
tuning
systems
24-tone equal temperament
(Numbers in brackets refer
to fractional semitones.)

Neutral

  • quarter tone (​12)
  • second (​1 12)
  • third (​3 12)
  • major fourth (​5 12)
  • minor fifth (​6 12)
  • sixth (​8 12)
  • seventh (​10 12)
Just intonations
(Numbers in brackets
refer to pitch ratios.)
7-limit
  • septimal quarter tone (36:35)
  • septimal third tone (28:27)
  • septimal chromatic semitone (21:20)
  • septimal diatonic semitone (15:14)
  • supermajor second (8:7)
  • subminor third (7:6)
  • supermajor third (9:7)
  • subminor seventh (7:4)
Higher-limit
  • minor diatonic semitone (17-limit)
Other
intervals
Groups
  • Microtone
  • 5-limit
  • Comma
  • Pseudo-octave
  • Pythagorean interval
  • Subminor and supermajor
Semitones
  • Pythagorean limma
  • Pythagorean apotome
  • Major limma
Quarter tones
  • Quarter tone
  • Septimal quarter tone
  • Undecimal quarter tone
Commas
  • Pythagorean comma (23.5 cents)
  • Syntonic comma (21.5 cents)
  • Holdrian comma (22.6 cents)
  • Septimal comma (27.3 cents)
  • Diesis (41.1 cents)
  • Septimal diesis (35.7 cents)
  • Diaschisma (19.5 cents)
  • Semicomma (10.1 cents)
  • Orwell comma (13.1 cents)
  • Septimal semicomma (13.8 cents)
  • Kleisma (8.1 cents)
  • Septimal kleisma (7.7 cents)
  • Schisma (1.95 cents)
  • Breedsma (0.72 cents)
  • Ragisma (0.4 cents)
Measurement
  • Cent
  • Centitone
  • Millioctave
  • Savart
Others
  • Wolf
  • Ditone
  • Semiditone
  • Secor
  • Incomposite interval
List of pitch intervals


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