Create synthesizer tuning files for microtonal scales.

Installation

bash cargo install -f tune

Usage

Create scl files

• 12-TET bash tune scl equal 1:12:2 tune scl equal 100c
• Bohlen-Pierce bash tune scl equal 1:13:3
• Equal temperament with step size of 5 sixth tones bash tune scl equal 5:36:2 tune scl equal 5/3:12:2 tunc scl equal {500/3}c
• 7-note Pythagorean (lydian mode) bash tune scl rank2 3/2 7 tune scl rank2 1.5 7
• 7-note quarter-comma meantone (major mode) bash tune scl rank2 1:4:5 6 1
• 8-note harmonic series bash tune scl harm 8
• Custom just intonation scale bash tune scl cust -n "Just intonation" 9/8 5/4 4/3 3/2 5/3 15/8 2

Create kbm files

• Start scale at C4 at its usual frequency bash tune kbm 60

• Start scale at C4, 20 cents higher than usual bash tune kbm 60+20c

• Start scale at A4 at 450 Hz bash tune kbm 69@450Hz

• Start scale at C4, A4 should sound at 450 Hz bash tune kbm -r 60 69@450Hz

Dump pitches of a scale

• 7-note Pythagorean (D dorian mode) bash tune dump 62 rank2 3/2 4 3 Output: bash .. 62 | 293.665 Hz | MIDI 62 | D 4 63 | 330.373 Hz | MIDI 64 | E 4 | +3.910c 64 | 348.047 Hz | MIDI 65 | F 4 | -5.865c 65 | 391.553 Hz | MIDI 67 | G 4 | -1.955c 66 | 440.497 Hz | MIDI 69 | A 4 | +1.955c 67 | 495.559 Hz | MIDI 71 | B 4 | +5.865c 68 | 522.071 Hz | MIDI 72 | C 5 | -3.910c 69 | 587.330 Hz | MIDI 74 | D 5 ..

Create a Midi Tuning Standard Sysex message

• 19-TET bash tune mts 69 equal 1:19:2 Output: bash 0xf0 0x7f 0x7f 0x08 .. 0x7f 0x00 0x00 0xf7 Number of retuned notes: 127 Number of out-of-range notes: 0

Expressions

Ordered by precedence:

1. <num>:<denom>:<int> evaluates to int^(num/denom)
2. <num>/<denom> evaluates to num/denom
3. <cents>c evaluates to 2^(cents/1200)
4. {<expr>} evaluates to expr