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Diminished second

In modern Western tonal music theory, a diminished second is the interval produced by narrowing a minor second by one chromatic semitone. In twelve-tone equal temperament, it is enharmonically equivalent to a perfect unison; therefore, it is the interval between notes on two adjacent staff positions, or having adjacent note letters, altered in such a way…

Standards, Size in different tuning systems & Overview

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Abbreviation
d2
Equal temperament
0
Interval class
0
Inverse
augmented seventh
Just interval
128:125, 524288:531441 (Pythagorean tuning)
Just intonation
41.1, -23.46

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Overview

Size in different tuning systems

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Diminished second

Nodes20
Edges19
Triples15
Avg. degree1.9
Density0.1
Components1

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Diminished second

Top relations

related to Size in different tuning systems · 5
Diminished second → Hence, In, It, The, This
is a · 2
Diminished second → distinct interval, interval produced by narrowing a minor second by one chromatic semitone
Abbreviation · 1
Diminished second → d2
Equal temperament · 1
Diminished second → 0
Interval class · 1
Diminished second → 0
Inverse · 1
Diminished second → augmented seventh
Just interval · 1
Diminished second → 128:125, 524288:531441 (Pythagorean tuning)
Just intonation · 1
Diminished second → 41.1, -23.46
Other names · 1
Diminished second → —
Semitones · 1
Diminished second → 0

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Important terminology

interval diminished second tuning chromatic semitone equal temperament difference unison diatonic size meantone systems semitones enharmonically music minor one equivalent

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Diminished secondAbbreviationd21.00infobox
Diminished secondEqual temperament01.00infobox
Diminished secondInterval class01.00infobox
Diminished secondInverseaugmented seventh1.00infobox
Diminished secondJust interval128:125, 524288:531441 (Pythagorean tuning)1.00infobox
Diminished secondJust intonation41.1, -23.461.00infobox
Diminished secondOther names—1.00infobox
Diminished secondSemitones01.00infobox
Diminished secondis ainterval produced by narrowing a minor second by one chromatic semitone0.90text
Diminished secondis adistinct interval0.90text
Diminished secondrelated to Size in different tuning systemsIn0.60section
Diminished secondrelated to Size in different tuning systemsIt0.60section

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