625/624
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| Ratio | 625/624 |
| Monzo | [-4 -1 4 0 0 -1⟩ |
| Size in cents | 2.77219 |
| Name(s) | tunbarsma |
| open this interval in xen-calc | |
625/624, the tunbarsma, is an unnoticeable 13-limit comma with a value of roughly 2.77 cents. Tempering out this comma not only equates 25/24 with 26/25 – splitting 13/12 in half and going part of the way towards splitting the 9/8 whole tone into three (the other comma that needs to be tempered in order to finish this job is 676/675) – but also equates 39/32 with the interval that results from stacking four 5/4 major thirds then octave-reducing.