6561/6400: Difference between revisions
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Dave Keenan (talk | contribs) →Sagittal notation: Changed "simplest ratio" to "simplest interval". Changed colons to slashes and dash. Gave the truly-simplest (2,3-free) interval in addition to the octave-reduced interval. Replaced hair-space with nbhsp template call. |
Dave Keenan (talk | contribs) Changed "2" to "two". |
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'''6561/6400''', the '''double syntonic comma''', is equal to | '''6561/6400''', the '''double syntonic comma''', is equal to two [[81/80]]'s stacked or (81/80)<sup>2</sup>. | ||
== Sagittal notation == | == Sagittal notation == | ||
In the [[Sagittal]] system, the downward version of this comma (possibly tempered) is represented by the sagittal {{sagittal | \\! }} and is called the '''25 small diesis''', or '''25S''' for short, because the simplest interval it notates is 25/1 = 5×5 (equiv. 25/16), as for example in E{{nbhsp}}{{sagittal | b }}-B{{nbhsp}}{{sagittal | \\! }}. The upward version is called '''1/25S''' or '''25S up''' and is represented by {{sagittal| //| }}. | In the [[Sagittal]] system, the downward version of this comma (possibly tempered) is represented by the sagittal {{sagittal | \\! }} and is called the '''25 small diesis''', or '''25S''' for short, because the simplest interval it notates is 25/1 = 5×5 (equiv. 25/16), as for example in E{{nbhsp}}{{sagittal | b }}-B{{nbhsp}}{{sagittal | \\! }}. The upward version is called '''1/25S''' or '''25S up''' and is represented by {{sagittal| //| }}. | ||
Latest revision as of 08:31, 10 October 2024
| Interval information |
[sound info]
6561/6400, the double syntonic comma, is equal to two 81/80's stacked or (81/80)2.
Sagittal notation
In the Sagittal system, the downward version of this comma (possibly tempered) is represented by the sagittal and is called the 25 small diesis, or 25S for short, because the simplest interval it notates is 25/1 = 5×5 (equiv. 25/16), as for example in E -B . The upward version is called 1/25S or 25S up and is represented by .