erv

A library for generating microtonal scales inspired by work and theories of Erv Wilson.

Usage

This library has several different namespaces each corresponding to a different type of scale.

CPS (Combination product sets)

For an introduction to CPS scales: http://www.anaphoria.com/hexany.pdf https://en.xen.wiki/w/Combination_product_set

(require '[erv.cps.core :as cps])

(def my-hexany (cps/make 2 [1 3 5 7]))

(-> my-hexany
  +all-subcps ;; add all subsets under the `:subcps` key
  )

MOS (Moment of Symmetry)

For an introduction to MOS scales: https://www.anaphoria.com/mos.pdf https://anaphoria.com/wilsonintroMOS.html https://en.xen.wiki/w/MOS_scale

(require '[erv.mos.core :as mos]
         '[erv.mos.submos :as submos]')

(def period 31)
(def generator 13)
(def my-mos (mos/make period generator))
(submos/make-all-submos (nth my-mos 3) generator) ;; this will generate all secondary MOS and all possible "traverse" MOS

Note

This library is a work in progress and mostly a workshop for myself, so the code is not polished as it should. If you are using this library, feel free to let make me aware of so that I can take more care of the code and the documentation.

License

This program and the accompanying materials are made available under the terms of the Eclipse Public License 2.0 which is available at http://www.eclipse.org/legal/epl-2.0.

This Source Code may also be made available under the following Secondary Licenses when the conditions for such availability set forth in the Eclipse Public License, v. 2.0 are satisfied: GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version, with the GNU Classpath Exception which is available at https://www.gnu.org/software/classpath/license.html.