4394/4375: Difference between revisions
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'''4394/4375''', the '''rectified Hebrew comma''', is a small 13-limit comma of about 7.5 cents. | '''4394/4375''', the '''rectified Hebrew comma''', is a small 13-limit comma of about 7.5 cents. | ||
When octave-reduced, 4394/4375 represents a difference between a stack of three [[13/10]] against one [[35/32]]. | When octave-reduced, 4394/4375 represents a difference between a stack of three [[13/10]] against one [[35/32]]. Alternately, it splits the [[14/13]] in two parts, each corresponding to [[26/25]]. | ||
== Theory == | == Theory == | ||
Revision as of 20:26, 26 March 2022
| Interval information |
4394/4375, the rectified Hebrew comma, is a small 13-limit comma of about 7.5 cents.
When octave-reduced, 4394/4375 represents a difference between a stack of three 13/10 against one 35/32. Alternately, it splits the 14/13 in two parts, each corresponding to 26/25.
Theory
Tempering out 4394/4375 alongside with 3136/3125 sets the rectified Hebrew temperament, which is a 13-limit extension of didacus. The presence of 4394/4375 being tempered out is the defining factor which specifies the temperament as Rectified Hebrew.
The comma is tempered out by the following vals: 72, 58, 53, 130, 111, 19p, 34d, 19e, 77, 38df. In addition, it is tempered out by 353edo, where it is connected to a proposal to reform the Hebrew calendar, and where it takes its name from.