Comma: Difference between revisions

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In just intonation, a '''comma''' is a small [[interval]] that occurs between two intervals which are close in [[pitch~~]]. Commas are always greater than [[1/1]] (0 [[cent]]s) and not a power such as a square or cube of any other just interval, and generally in a low [[prime limit~~]].

In just intonation, a '''comma''' is a small [[interval]] that occurs between two intervals which are close in [[pitch]].

Commas are often considered [[dissonant]] due to their small but noticeable [[interval size measure|size]] which induces an audible [[beat]]. In addition, certain chord progressions are [[comma pump]]s, which may cause the [[tonal center]] of a piece to drift up or down in pitch over time. These effects can be treated either as features to be desired or as problems to be solved. Examples of approaches that try to solve these problems include [[adaptive just intonation]], [[temperament]]s, and [[fudging]].

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''~~Comma~~'' can be used to refer to any interval bigger than 0 ~~[[cents]]~~, but smaller than around 30 ~~cents~~.

As an interval region, a '''comma''' can be used to refer to any interval bigger than 0{{c}}, but smaller than around 30{{c}}. 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 ==

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* [[Superparticular ratio]]

* [[Wolf interval]]

* [[Octave-splitting comma]]

== External links ==

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 }}
 {{Wikipedia|Comma (music)}}
-In just intonation, a '''comma''' is a small [[interval]] that occurs between two intervals which are close in [[pitch]]. Commas are always greater than [[1/1]] (0 [[cent]]s) and not a power such as a square or cube of any other just interval, and generally in a low [[prime limit]].
+In just intonation, a '''comma''' is a small [[interval]] that occurs between two intervals which are close in [[pitch]].
 Commas are often considered [[dissonant]] due to their small but noticeable [[interval size measure|size]] which induces an audible [[beat]]. In addition, certain chord progressions are [[comma pump]]s, which may cause the [[tonal center]] of a piece to drift up or down in pitch over time. These effects can be treated either as features to be desired or as problems to be solved. Examples of approaches that try to solve these problems include [[adaptive just intonation]], [[temperament]]s, and [[fudging]].
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 {{Main| Comma and diesis }}
-''Comma'' can be used to refer to any interval bigger than 0 [[cents]], but smaller than around 30 cents.
+As an interval region, a '''comma''' can be used to refer to any interval bigger than 0{{c}}, but smaller than around 30{{c}}. 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 ==
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 * [[Superparticular ratio]]
 * [[Wolf interval]]
-* [[Octave-splitting comma]]
 == External links ==