980/729
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| Ratio | 980/729 |
| Monzo | [2 -6 1 2⟩ |
| Size in cents | 512.23552 |
| Name(s) | complex sensamagic fourth |
| Color name | zzy5, zozoyo 5th |
| FJS name | d55, 49 |
| open this interval in xen-calc | |
980/729, the complex sensamagic fourth is a 7-limit interval of about 512 cents, sharp of a perfect fourth (4/3) by a sensamagic comma (245/243).
It arises in just intonation as the difference between the supermajor third 9/7 and the semidiminished seventh 140/81, making it a critical tempering target in the Sensamagic dominant chord. However, its distinction from 4/3 is emphasised in the canou family of temperaments, through its accessibility by two steps of the 81/70-generator.
See also
- 729/490 – its octave complement
- Gallery of just intervals