Escapade comma: Difference between revisions

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The '''escapade comma''', {{monzo| 32 -7 -9 }}, is a [[comma]] with a size of 9.492 [[cent]]s. It is the difference between nine [[5/4|just major thirds]] and seven [[4/3|just perfect fourths]], that is, (4/3)<sup>7</sup>/(5/4)<sup>9</sup>. This can also be written as (16/15)<sup>7</sup>/(5/4)<sup>2</sup>, that is, the difference between a stack of seven [[16/15]]'s and [[25/16]].
The '''escapade comma''', ([[monzo]]: {{monzo| 32 -7 -9 }}), is a [[comma]] with a size of 9.492 [[cent]]s. It is the difference between nine [[5/4|just major thirds]] and seven [[4/3|just perfect fourths]], that is, (4/3)<sup>7</sup>/(5/4)<sup>9</sup>. This can also be written as (16/15)<sup>7</sup>/(5/4)<sup>2</sup>, that is, the difference between a stack of seven [[16/15]]'s and [[25/16]].


== Temperaments ==
== Temperaments ==
The [[escapade family]] tempers out this comma.  
Temperaments in the [[escapade family]] tempers out this comma.
 
== Etymology ==
The escapade comma seems to have been named by [[Paul Erlich]] in 2002, referring to the fact that this comma "escaped" a 5-limit comma search by [[Carl Lumma]]<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning-math/topicId_5080.html#5113 Yahoo! Tuning Group | ''Ultimate 5-limit comma list'']</ref>.  


== See also ==
== See also ==
* [[Small comma]]
* [[Small comma]]
== Notes ==


[[Category:Escapade]]
[[Category:Escapade]]

Revision as of 06:56, 14 May 2023

Interval information
Factorization 232 × 3-7 × 5-9
Monzo [32 -7 -9
Size in cents 9.491569¢
Name escapade comma
FJS name [math]\displaystyle{ \text{6d4}_{5,5,5,5,5,5,5,5,5} }[/math]
Special properties reduced,
reduced subharmonic
Tenney norm (log2 nd) 63.9921
Weil norm (log2 max(n, d)) 64
Wilson norm (sopfr(nd)) 130
Comma size small
Open this interval in xen-calc

The escapade comma, (monzo: [32 -7 -9), is a comma with a size of 9.492 cents. It is the difference between nine just major thirds and seven just perfect fourths, that is, (4/3)7/(5/4)9. This can also be written as (16/15)7/(5/4)2, that is, the difference between a stack of seven 16/15's and 25/16.

Temperaments

Temperaments in the escapade family tempers out this comma.

Etymology

The escapade comma seems to have been named by Paul Erlich in 2002, referring to the fact that this comma "escaped" a 5-limit comma search by Carl Lumma[1].

See also

Notes