Diesis
(Redirected from Normal diesis)
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The diesis (/ˈdaɪəsɪs/ DY-ə-sis; plural dieses) most commonly refers to:
- The difference between two enharmonic notes in a scale. See Diesis (scale theory);
- by extension, 128/125 (≈ 41¢), the augmented comma or lesser diesis;
- rarely, 648/625, the diminished comma or greater diesis;
- by extension, a melodic unit of about the size of 128/125. See Diesis (melodic unit).
Intervals with the word in the name:
- Magic comma, or small diesis
- Porcupine comma, or maximal diesis
- Tetracot comma, or minimal diesis
- 49/48, the large septimal diesis
- 50/49, the septimal tritonic diesis
In addition, there are a number of archaic usages in Ancient Greek music:
- 256/243, known as the limma today;
- a variety of quartertones.
Normal diesis
The normal diesis (≈ 38.7¢) is an interval size measure defined as one step of 31edo.