21/20: Difference between revisions
Jump to navigation
Jump to search
m Removing from Category:Pages with internal sound examples using Cat-a-lot |
m Normalising usage of Infobox Interval |
||
| Line 1: | Line 1: | ||
{{Infobox Interval | {{Infobox Interval | ||
| Name = septimal minor semitone, large septimal chroma | |||
| Name = septimal minor semitone, | |||
| Color name = zg2, zogu 2nd | | Color name = zg2, zogu 2nd | ||
| Sound = jid_21_20_pluck_adu_dr220.mp3 | | Sound = jid_21_20_pluck_adu_dr220.mp3 | ||
}} | }} | ||
| Line 24: | Line 20: | ||
* [[Septisemi temperaments]], where it is tempered out | * [[Septisemi temperaments]], where it is tempered out | ||
[[Category:Second]] | [[Category:Second]] | ||
[[Category:Semitone]] | [[Category:Semitone]] | ||
[[Category:Chroma]] | [[Category:Chroma]] | ||
[[Category:Septisemi]] | [[Category:Septisemi]] | ||
{{todo|improve synopsis}} | {{todo|improve synopsis}} | ||
Revision as of 12:36, 25 October 2022
| Interval information |
large septimal chroma
reduced
[sound info]
21/20 is a small semitone of about 85 cents. It may be found in 7-limit just intonation as, for example, the difference between 4/3 and 7/5, 8/7 and 6/5, or 5/3 and 7/4.
Terminology
21/20 is traditionally called a chroma, perhaps for its proximity (and conflation in systems like septimal meantone) with the major chroma 135/128. However, it is a diatonic semitone in both Helmholtz-Ellis notation and Functional Just System, viewed as the Pythagorean minor second 256/243 altered by 5120/5103. Marc Sabat has taken to call it the minor diatonic semitone in the same material where 15/14 is also named as the major chromatic semitone[1].
See also
- 40/21 – its octave complement
- 10/7 – its fifth complement
- List of superparticular intervals
- Gallery of just intervals
- Septisemi temperaments, where it is tempered out