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Interval information
Ratio 6144/6125
Factorization 211 × 3 × 5-3 × 7-2
Monzo [11 1 -3 -2
Size in cents 5.3620463¢
Name porwell comma
Color name srrg31, sarurutrigu 1sn,
Sarurutrigu comma
FJS name [math]\text{d1}_{5,5,5,7,7}[/math]
Special properties reduced
Tenney height (log2 nd) 25.1655
Weil height (log2 max(n, d)) 25.1699
Wilson height (sopfr (nd)) 54
Harmonic entropy
(Shannon, [math]\sqrt{n\cdot d}[/math])
~2.52158 bits
Comma size small
open this interval in xen-calc

6144/6125, the porwell comma, is a 7-limit small comma measuring about 5.4 cents. It is the amount by which a stack of two 35/32's falls short of 6/5, and the amount by which a stack of two 48/35's exceeds 15/8.


Tempering out this comma leads to the porwell family of temperaments.


The porwell comma was named by Gene Ward Smith in 2010. It is the concatenation of porcupine and orwell[1].

See also