512/507: Difference between revisions

Overthink (talk | contribs)
Expanded temperaments section
fifth complement, not octave complement
 
Line 8: Line 8:


== Temperaments ==
== Temperaments ==
[[Tempering out]] this comma equates both tridecimal neutral thirds to the true neutral third [[sqrt(3/2)]], and is proposed to be called '''harmoneutral''' temperament by [[User:VectorGraphics|Vector]] in 2025, as it tempers the subharmonic neutral third together with its fifth complement. It can thus be seen as the 2.3.13 analogue of 2.3.11 [[Neutral (temperament)|neutral]], which tempers out [[243/242]] and equates [[11/9]] with its octave complement, but instead equating 16/13 with 39/32, and preferring sharper fifths over flatter ones.     
[[Tempering out]] this comma equates both tridecimal neutral thirds to the true neutral third [[sqrt(3/2)]], and is proposed to be called '''harmoneutral''' temperament by [[User:VectorGraphics|Vector]] in 2025, as it tempers the subharmonic neutral third together with its fifth complement. It can thus be seen as the 2.3.13 analogue of 2.3.11 [[Neutral (temperament)|neutral]], which tempers out [[243/242]] and equates [[11/9]] with its fifth complement, but instead equating 16/13 with 39/32, and preferring sharper fifths over flatter ones.     


However, it has significantly more damage than neutral, similarly to how [[archy]] has more damage than [[meantone]]. For example, the neutral third in 2.3.13 CWE tuning is 7.7{{C}} flat of 16/13, but also 4.4{{C}} sharp of 11/9. This makes it ambiguous, but since 11/9 is simpler and closer, the neutral third is likely to be heard as 11/9 rather than 16/13, which shows the higher damage of harmoneutral. Using a tuning sharper than "optimal", such as [[17edo]] or [[61edo|78edo]], makes the tridecimal nature of the intervals more apparent, but only to an extent. Compare that to in neutral, where the neutral third in 2.3.11 CWE tuning is 3.1{{C}} sharp of 11/9 and 8.9{{C}} flat of 16/13, so it is much more clearly 11/9. Harmoneutral also has much greater errors, with a (2.3.13) 13-odd-limit [[minimax]] error of 6.80{{C}} compared to neutral's (2.3.11) 11-odd-limit minimax error of 2.86{{C}}.   
However, it has significantly more damage than neutral, similarly to how [[archy]] has more damage than [[meantone]]. For example, the neutral third in 2.3.13 CWE tuning is 7.7{{C}} flat of 16/13, but also 4.4{{C}} sharp of 11/9. This makes it ambiguous, but since 11/9 is simpler and closer, the neutral third is likely to be heard as 11/9 rather than 16/13, which shows the higher damage of harmoneutral. Using a tuning sharper than "optimal", such as [[17edo]] or [[61edo|78edo]], makes the tridecimal nature of the intervals more apparent, but only to an extent. Compare that to in neutral, where the neutral third in 2.3.11 CWE tuning is 3.1{{C}} sharp of 11/9 and 8.9{{C}} flat of 16/13, so it is much more clearly 11/9. Harmoneutral also has much greater errors, with a (2.3.13) 13-odd-limit [[minimax]] error of 6.80{{C}} compared to neutral's (2.3.11) 11-odd-limit minimax error of 2.86{{C}}.