Archangelic comma
Interval information |
reduced subharmonic
The archangelic comma (monzo: [301994 -190537⟩) is the amount by which 190537 perfect fifths fall short of 111457 octaves, in other words 2111457/(3/2)190537. This difference is inaudible at roughly 0.0001 cents.
This comma was named by Aura in direct opposition to the satanic comma due to 190537edo actually surpassing 665edo in 3-2 telicity k-strength. However, it is opposite the satanic comma in other ways, such as the fact that tempering this comma results in a stretched fifth rather than a compressed fifth.
Temperament
Tempering out this comma leads to the archangelic family of temperaments. It is tempered out in 190537edo, which is a 28-strong 3-2 telic system due to tempering this comma out.