Historisma: Difference between revisions

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'''257298363/256000000''', the '''historisma''', is a [[5-limit]] comma. It is the difference between a stack of six septimal chromatic semitones ([[21/20]]) and a perfect fourth ([[4/3]]). Tempering it out leads to the 7-limit version of the [[history (temperament)|History]] temperament.
'''257298363/256000000''', the '''historisma''', is a [[7-limit]] comma that is the difference between a stack of six septimal chromatic semitones ([[21/20]]) and a perfect fourth ([[4/3]]). Tempering it out leads to the 7-limit version of the [[history (temperament)|History]] temperament.


The [[hypovishnuzma]], the difference between six classic chromatic semitones ([[25/24]]) and 4/3, can be considered the historisma's [[5-limit]] counterpart. [[43edo]] tempers out both, as it tempers out [[126/125]], which equates 21/20 and 25/24.
The [[hypovishnuzma]], the difference between six classic chromatic semitones ([[25/24]]) and 4/3, can be considered the historisma's [[5-limit]] counterpart. [[43edo]] tempers out both, as it tempers out [[126/125]], which equates 21/20 and 25/24.