Comma: Difference between revisions
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{{Main| Comma and diesis }} | {{Main| Comma and diesis }} | ||
As an interval region, a comma can be used to refer to any interval bigger than 0{{c}}, but smaller than around 30{{c}}. In [[Sagittal notation]], a comma is specifically defined as between half of the [[Pythagorean comma]] {{monzo| -19 12 }} and half of the [[17-comma]] {{monzo| 27 -17 }}, about 11.7{{c}} to 33.4{{c}}<ref>[https://sagittal.org/sagittal.pdf ''Sagittal – A Microtonal Notation System''] by [[George Secor|George D. Secor]] and [[Dave Keenan|David C. Keenan]]</ref>. | |||
Comma-sized intervals can be used in melody as an {{W|appoggiatura}}, an {{W|acciaccatura}}, or a quick passing tone. Two notes that differ by a comma can be played together for a "shimmer" effect that results from beating between the tones. | |||
Most commonly, commas serve as the separation between two close intervals, such as 9/8 and 8/7. Playing notes a comma apart in succession usually sounds like a "dirty" variation of the same note rather than a distinct melodic step, with the smallest intervals that sounds like a distinct step being around a [[quartertone]] in size. | |||
== Lists of commas by size == | == Lists of commas by size == | ||
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== External links == | == External links == | ||
* [http://www.tonalsoft.com/enc/c/comma.aspx Comma] on [[Tonalsoft Encyclopedia]] | * [http://www.tonalsoft.com/enc/c/comma.aspx Comma] on [[Tonalsoft Encyclopedia]] | ||
== References == | |||
<references/> | |||
[[Category:Comma| ]] <!-- main article --> | [[Category:Comma| ]] <!-- main article --> | ||