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Interval information
Ratio 54/49
Factorization 2 × 33 × 7-2
Monzo [1 3 0 -2
Size in cents 168.21319¢
Name Zalzal's mujannab
Color name rr1, ruru unison
FJS name [math]\text{A1}_{7,7}[/math]
Special properties reduced
Tenney height (log2 nd) 11.3696
Weil height (log2 max(n, d)) 11.5098
Wilson height (sopfr (nd)) 25
Harmonic entropy
(Shannon, [math]\sqrt{nd}[/math])
~4.22173 bits

[sound info]
open this interval in xen-calc

Zalzal's mujannab, the interval of 54/49 introduced by Mansour Zalzal, is between 11/10 and 10/9 in size, being 540/539 sharp of 11/10 and 245/243 flat of 10/9. It is the interval between 7/6 and 9/7. Tempering out 540/539 equates it with 11/10 and leads to swetismic chords. Occurring often in JI scales, it is one of the ways 11-limit harmony gets introduced into 7-limit scales.

See also