RE: Tritone ratios

>}I had always assumed that 7/5 was the natural ratio for an augmented fourth,
>}and that 10/7 was the natural ratio for the diminished fifth.
>
>In meantone temperament, yes, the augmented fourth is almost a 7/5 and the
>diminished fifth is nearly a 10/7. In barbershop harmony or on a diatonic
>harmonica, it's the other way around, as dominant sevenths are tuned 4:5:6:7.


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