Alternate Scales macro

Macro to convert pitch to Werckmeister, de Caus, ¼ comma, just intonation, and other scales.

(27 Votes)
1.0 (Updated 12 years ago)
September 17, 2006
Reaktor 5 or lower


This is a macro that modifies a standard Reaktor pitch signal to play in a scale other than equal temperament. It’s packaged inside a little one-oscillator demo instrument so that the scales can be listened to.

To include this macro in a Reaktor instrument, just place it between the output of the Note Pitch module and the P input of the oscillator(s).

Nine scales are included: Werckmeister II, Werckmeister III, Pythagorean, ¼ Comma, 1/6 Comma, de Caus, Ramos, Valotti-Young, and Kirnberger III.

To play in an alternate scale, just choose a scale from the Scale menu and the root key from the Base Note menu.

The macro also permits the input of custom just intonation scales. To do this, select ‘Front Panel Ratios’ from the Scale menu, and enter the ratios (numerator and denominator) for each semitone. For example, the perfect fifth is usually a 3:2 ratio, so in the box labeled ‘5th’, put a 3 in the numerator (above the dividing line) and a 2 in the denominator (below the dividing line).

The ensemble includes an additional version of the macro that leaves out the ability to enter just intonation ratios. This version is for adding alternate scales to an instrument without requiring much screen real estate (while it appears on this ensemble’s screen, it’s not actually hooked up).


Ray Vincent
7 years ago
Thank you, it works great. Some synths are tricky. I could'nt, for an example figure out how to put in Razor? Do you know how I would hook that up?
Ben Morrow
9 years ago
Love it Thank you!
Mark Bonnington
12 years ago
Ok, I thought it was supposed to remap keys into completely different scales.
Chet Singer
12 years ago
Yes, that's what it does: slight detuning. For example, many Just Intonation tunings enable guitarists to add major thirds to their power chords without turning them to mud. Also, Bach wrote the 'well-tempered clavier' for a version of the 1/6 comma tuning, which in many keys has better thirds than equal temperament. If anyone's interested in exploring alternate 12-note scales, I recommend Donald Hall's book 'Musical Acoustics', which has an excellent chapter regarding tunings. It's written for musicians, not engineers, and may be found in various university libraries and bookstores.
Mark Bonnington
12 years ago
Doesn't seem to do much on my machine other than slight detuning.
Aaron Keyt
12 years ago
What a nice start to my day! The ability to enter custom scales is especially useful.
Don Dailey
12 years ago
I like! Thanks for the upload.