Create synthesizer tuning files for microtonal scales.

Installation

cargo install -f tune

Usage

Create scl files

• 12-TET

  tune scl equal 1:12:2
  tune scl equal 100c
  

• Bohlen-Pierce

  tune scl equal 1:13:3
  

• Equal temperament with step size of 5 sixth tones

  tune scl equal 5:36:2
  tune scl equal 5/3:12:2
  tunc scl equal {500/3}c
  

• 7-note Pythagorean (lydian mode)

  tune scl rank2 3/2 7
  tune scl rank2 1.5 7
  

• 7-note quarter-comma meantone (major mode)

  tune scl rank2 1:4:5 6 1
  

• 8-note harmonic series

  tune scl harm 8
  

Dump pitches of a scale

• 7-note Pythagorean (minor mode)

  tune dump rank2 3/2 3 4
  

  Output:

  ...
  69 | 440.000 Hz | MIDI 69 | A     5
  70 | 495.000 Hz | MIDI 71 | B     5 | +3.910c
  71 | 521.481 Hz | MIDI 72 | C     6 | -5.865c
  72 | 586.667 Hz | MIDI 74 | D     6 | -1.955c
  73 | 660.000 Hz | MIDI 76 | E     6 | +1.955c
  74 | 695.309 Hz | MIDI 77 | F     6 | -7.820c
  75 | 782.222 Hz | MIDI 79 | G     6 | -3.910c
  76 | 880.000 Hz | MIDI 81 | A     6
  ...
  

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