135/128: Difference between revisions
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{{Infobox Interval | {{Infobox Interval | ||
| Ratio = 135/128 | | Ratio = 135/128 | ||
| Monzo = -7 3 1 | | Monzo = -7 3 1 | ||
| Cents = 92.17872 | | Cents = 92.17872 | ||
| Name = | | Name = pelogic comma, <br> major limma, <br> major chroma | ||
| Color name = Ly1, layo unison,<br>Layobi comma | | Color name = Ly1, layo unison,<br>Layobi comma | ||
| FJS name = A1<sup>5</sup> | | FJS name = A1<sup>5</sup> | ||
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}} | }} | ||
The 5-limit interval '''135/128''', about 92.2 [[cent]]s in size, is called the '''pelogic comma''', '''major limma''' or '''major chroma'''. It is a [[syntonic comma]] away from the pythagorean major semitone [[2187/2048]], and so is tuned justly in 1/7 comma meantone. Flattening by another syntonic comma reaches the even simpler [[25/24]]. | The [[5-limit]] interval '''135/128''', about 92.2 [[cent]]s in size, is called the '''pelogic comma''', '''major limma''' or '''major chroma'''. It is a [[syntonic comma]] away from the pythagorean major semitone [[2187/2048]], and so is tuned justly in 1/7 comma meantone. Flattening by another syntonic comma reaches the even simpler [[25/24]]. | ||
As a [[comma]] it represents the difference between three [[4/3|perfect fourths]] and a [[5/4|just major third]] (plus an [[octave]]). | As a [[comma]] it represents the difference between three [[4/3|perfect fourths]] and a [[5/4|just major third]] (plus an [[octave]]). | ||
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[[Category:5-limit]] | [[Category:5-limit]] | ||
[[Category:Medium commas]] | [[Category:Medium commas]] | ||
[[Category:Semitone]] | [[Category:Semitone]] | ||
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[[Category:Pelogic]] | [[Category:Pelogic]] | ||
[[Category:Meantone]] | [[Category:Meantone]] | ||
{{todo|expand}} | |||
Revision as of 13:10, 21 March 2022
| Interval information |
major limma,
major chroma
Layobi comma
reduced harmonic
[sound info]
The 5-limit interval 135/128, about 92.2 cents in size, is called the pelogic comma, major limma or major chroma. It is a syntonic comma away from the pythagorean major semitone 2187/2048, and so is tuned justly in 1/7 comma meantone. Flattening by another syntonic comma reaches the even simpler 25/24.
As a comma it represents the difference between three perfect fourths and a just major third (plus an octave).
See also
- Gallery of just intervals
- Medium comma
- File:Ji-135-128-csound-foscil-220hz.mp3 – another sound example