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When converting a note to its frequency: use # or s for ♯; use f for ♭. E.g., ef5 ⟶ E♭5
To convert in the other direction: enter a positive float
12ET: 12-tone equal temperament
JI: 5-limit just intonation with ratios [1.0, 25/24, 9/8, 6/5, 5/4, 4/3, 45/32, 3/2, 8/5, 5/3, 9/5, 15/8, 2.0]
PT: Pythagorean tuning relative to bottom note
Note: intervals are computed over the fixed note given in the box,
which may be either a note like C5 (specified in equal temperament with A4 as given) or a specified frequency.
Moreover, sc = 81/80 is the syntonic comma, pc is
the pythagorean comma, t = 10/9 is a minor tone, and S = 16/15
is the major semitone/limma.
In output, frequencies are given to three decimal places and ratios to five.
