243/242: Difference between revisions

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'''243/242''', ~~otherwise known as~~ the '''rastma''' or the '''neutral third comma''', is an [[11-limit]] comma with a value of roughly 7.~~13912~~ [[cent|cents]]. It is significant in Just Intonation as the amount by which a stack of two [[33/32]] quartertones falls short of an [[2187/2048|apotome]] as well as the difference between [[11/9]] and [[27/22]], and, the difference between [[45/44]] and [[55/54]]. Tempering it out leads to a form of '''[[rastmic temperaments|rastmic temperament]]''' or '''neutral temperament'''. When not tempered out, the rastma behaves much like an 11-limit counterpart to the 5-limit's [[81/80|syntonic comma]] – a property that becomes especially apparent when one works extensively with 33/32 quartertones.

{{Infobox Interval

| Icon =

| Ratio = 243/242

| Monzo = -1 5 0 0 -2

| Cents = 7.13912

| Name = rastma, <br>neutral third comma

| Color name =

| FJS name = A1<sub>121</sub>

| Sound =

}}

'''243/242''', the '''rastma''' or the '''neutral third comma''', is an [[11-limit]] (also 2.3.11 subgroup) comma with a value of roughly 7.1 [[cent|cents]]. It is significant in Just Intonation as the amount by which a stack of two [[33/32]] quartertones falls short of an [[2187/2048|apotome]] as well as the difference between [[11/9]] and [[27/22]], and, the difference between [[45/44]] and [[55/54]]. Tempering it out leads to a form of '''[[rastmic temperaments|rastmic temperament]]''' or '''neutral temperament'''. When not tempered out, the rastma behaves much like an 11-limit counterpart to the 5-limit's [[81/80|syntonic comma]] – a property that becomes especially apparent when one works extensively with 33/32 quartertones.

== See also ==

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-'''243/242''', otherwise known as the '''rastma''' or the '''neutral third comma''', is an [[11-limit]] comma with a value of roughly 7.13912 [[cent|cents]]. It is significant in Just Intonation as the amount by which a stack of two [[33/32]] quartertones falls short of an [[2187/2048|apotome]] as well as the difference between [[11/9]] and [[27/22]], and, the difference between [[45/44]] and [[55/54]]. Tempering it out leads to a form of '''[[rastmic temperaments|rastmic temperament]]''' or '''neutral temperament'''. When not tempered out, the rastma behaves much like an 11-limit counterpart to the 5-limit's [[81/80|syntonic comma]] – a property that becomes especially apparent when one works extensively with 33/32 quartertones.
+{{Infobox Interval
+| Icon =
+| Ratio = 243/242
+| Monzo = -1 5 0 0 -2
+| Cents = 7.13912
+| Name = rastma, <br>neutral third comma
+| Color name =
+| FJS name = A1<sub>121</sub>
+| Sound =
+}}
+'''243/242''', the '''rastma''' or the '''neutral third comma''', is an [[11-limit]] (also 2.3.11 subgroup) comma with a value of roughly 7.1 [[cent|cents]]. It is significant in Just Intonation as the amount by which a stack of two [[33/32]] quartertones falls short of an [[2187/2048|apotome]] as well as the difference between [[11/9]] and [[27/22]], and, the difference between [[45/44]] and [[55/54]]. Tempering it out leads to a form of '''[[rastmic temperaments|rastmic temperament]]''' or '''neutral temperament'''. When not tempered out, the rastma behaves much like an 11-limit counterpart to the 5-limit's [[81/80|syntonic comma]] – a property that becomes especially apparent when one works extensively with 33/32 quartertones.
 == See also ==