Tenney–Euclidean temperament measures: Difference between revisions

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== Examples ==
== Examples ==
The different definitions yield different results, but they are related to each other by a factor derived only from the rank and limit. A meaningful comparison of temperaments in the same rank and limit can be provided by picking any one of them.  
While the different definitions yield different results, they are related to each other by a factor derived only from the rank and subgroup. A meaningful comparison of temperaments in the same rank and subgroup is provided by picking any one of them. Here, we consider septimal [[magic]] and [[meantone]], as follows.  


Here is a demonstration from [[7-limit]] [[magic]] and [[meantone]], comparing each of the definitions.  
{| class="wikitable center-all left-1"
 
|+ style="font-size: 105%;" | ''L''<sup>2</sup> norm
{| class="wikitable center-all"
|-
|+ style="font-size: 105%;" | 7-limit magic (left) vs. meantone (right) in TE temperament measures
! Temperament
! Complexity
! Error (¢)
! Simple badness
|-
| Septimal meantone
| 5.400
| 2.763
| 12.435×10<sup>−3</sup>
|-
| Septimal magic
| 7.195
| 2.149
| 12.882×10<sup>−3</sup>
|}
{| class="wikitable center-all left-1"
|+ style="font-size: 105%;" | Breed's RMS norm
|-
! Temperament
! Complexity
! Error (¢)
! Simple badness
|-
| Septimal meantone
| 1.350
| 1.382
| 1.554×10<sup>−3</sup>
|-
|-
!
| Septimal magic
! TE complexity
| 1.799
! TE error (¢)
| 1.074
! TE simple badness
| 1.610×10<sup>−3</sup>
|}
{| class="wikitable center-all left-1"
|+ style="font-size: 105%;" | Smith's RMS norm
|-
|-
! {{W|Norm (mathematics) #Euclidean norm|Standard ''L''<sup>2</sup> norm}}
! Temperament
| 7.195 : 5.400
! Complexity
| 2.149 : 2.763
! Error (¢)
| 12.882×10<sup>−3</sup> : 12.435×10<sup>−3</sup>
! Simple badness
|-
|-
! Breed's RMS norm
| Septimal meantone
| 1.799 : 1.350
| 2.204
| 1.074 : 1.382
| 3.384
| 1.610×10<sup>−3</sup> : 1.554×10<sup>−3</sup>
| 6.218×10<sup>−3</sup>
|-
|-
! Smith's RMS norm
| Septimal magic
| 2.937 : 2.204
| 2.937
| 2.631 : 3.384
| 2.631
| 6.441×10<sup>−3</sup> : 6.218×10<sup>−3</sup>
| 6.441×10<sup>−3</sup>
|}
|}