3971/3969

The heartlandisma, with a ratio of 3971/3969 (also 3.7.11.19 subgroup) is the difference between two 21/19s and a 11/9 neutral third. Measuring about 0.87 ¢, it is an unnoticeable comma. By tempering it out is defined the heartlandismic temperament, which enables the heartlandismic chords.

Interval information

Ratio	3971/3969
Factorization	3-4 × 7-2 × 11 × 192
Monzo	[0 -4 0 -2 1 0 0 2⟩
Size in cents	0.8721582¢
Name	heartlandisma
Color name	19oo1orr1, nonoloruru unison
FJS name	[math]\displaystyle{ \text{d1}^{11,19,19}_{7,7} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	23.9098
Weil norm (log2 max(n, d))	23.9106
Wilson norm (sopfr(nd))	75
Comma size	unnoticeable
S-expression	S19/S21
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Etymology

The name heartlandisma was named by Xenllium in 2023. It is so named because 21/19 (173.268 ¢) is within heartland range of Margo Schulter's equable heptatonic.