Frameshift comma: Difference between revisions

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{{Infobox Interval
{{Infobox Interval
| JI glyph =
| Ratio = 22876792454961/22866405883904
| Ratio = 22876792454961/22866405883904
| Monzo = -34 28 0 0 -3
| Name = frameshift comma
| Cents = 0.7862
| Color name = Quadla-trilu comma
| Name = Frameshift comma
| Comma = yes
| Color name =  
| FJS name =
| Sound =  
}}
}}


The '''Frameshift comma''' is an [[unnoticeable comma|unnoticeable]] [[11-limit]] comma- specifically of the 2.3.11 subgroup- with a complicated ratio of 22876792454961/22866405883904, and a size of roughly 0.79 [[cent]]s.  It is the interval separating the [[Rastma]] from the [[Pythrabian comma]] as well as the amount by which an octave-reduced stack of three [[11/8]] intervals falls short of a stack of four [[apotome]]s.  Since both the Rastmic and Pythrabian temperaments are ways of conceptualizing how the 11-prime relates to the 3-prime within the 2.3.11 subgroup, that means that these two distinct frameworks for viewing the 11-prime relative to the 3-prime become linked when 22876792454961/22866405883904 is tempered out- hence the name "Frameshift" comma- a name which is even more appropriate in light of the fact that when one tempers out this comma, one can effectively modulate to 11/8 though a series of five, rather typical-sounding semitone-based motions- thus shifting a listener's perception of pitch relations. Naturally, tempering out this comma results in some form of [[Frameshift microtemperament]].
The '''frameshift comma''' is an [[unnoticeable comma|unnoticeable]] [[11-limit]] comma- specifically of the 2.3.11 subgroup- with a complicated ratio of 22876792454961/22866405883904, and a size of roughly 0.79 [[cent]]s.  It is the interval separating the [[Rastma]] from the [[Pythrabian comma]], as well as the amount by which an octave-reduced stack of three [[11/8]] intervals falls short of a stack of four [[apotome]]s.  Since both the Rastmic and Pythrabian temperaments are ways of conceptualizing how the 11-prime relates to the 3-prime within the 2.3.11 subgroup, that means that these two distinct frameworks for viewing the 11-prime relative to the 3-prime become linked when 22876792454961/22866405883904 is tempered out- hence the name "frameshift" comma.  Naturally, tempering out this comma results in some form of [[frameshift microtemperaments|frameshift microtemperament]], and such temperaments are known to be associated with higher-accuracy systems.
 
== Frameshift progression ==
 
The name of the frameshift comma is even more appropriate in light of the fact that when one tempers out this comma, one can move stepwise to 11/8 though a series of four motions by the apotome and one motion by [[128/121]]- all rather typical-sounding semitone-based motions- with this gesture forming the basis of what has since been dubbed the '''frameshift progression'''- a cadence which shifts a listener's perception of pitch relations such that a modulation to 11/8 sounds in tune.
 
[[File:Frameshift Cadence.mp3|thumb|Sample of the Frameshift progression as it appears in [[159edo]].]]
 
[[File:Frameshift Cadence Score.png|thumb|Score for the above sample of the Frameshift progression in 159edo.]]


== See also ==
== See also ==
* [[Unnoticeable comma]]
* [[Unnoticeable comma]]


[[Category:11-limit]]
[[Category:Unnoticeable comma]]
[[Category:Alpharabian]]
[[Category:Alpharabian]]
[[Category:Pythrabian]]
[[Category:Pythrabian]]
[[Category:Frameshift]]
[[Category:Frameshift]]
[[Category:Chord progressions]]
[[Category:Commas named for their regular temperament properties]]