12 Meantone (one-quarter quintal-comma)

For a general introduction to European historical tunings and these presets, please visit Introduction to European historical tunings and temperaments.

About this tuning

In the range from E♭ to G♯ each fifthPitches a fifth apart have a 2:3 frequency ratio (in just intonation) or a difference of 700 cents (in 12 tone equal temperament).Visit the link to learn more is narrowed by 1/4 of a quintal (Syntonic) commaA comma is a small difference in pitch between the same interval in different tuning systems.Visit the link to learn more (dividing the ratio 81/80 in four proportionally and sonically equal parts). Eight major thirds - E♭-G, B♭-D, F-A, C-E, G-B, D-F♯, A-C♯, E-G♯ - are tuned as untempered 4:5 frequency ratios.

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