AM Posted May 18, 2022 Share Posted May 18, 2022 (defun permute-by-rule (n rule row) (append (list row) (loop repeat n collect (setf row (position-filter rule row))))) ;; row => a row (or a list) ;; n => number of generations ;; rule => new position/order in every generation - keep attention it's 0-based!!! => for 12 pitches use 0 to 11 (permute-by-rule 20 '(2 0 1 5 11 3 8 6 4 9 10 7) (make-scale 'c4 12)) Stephane Boussuge, o_e and JulioHerrlein 2 1 Quote Link to comment Share on other sites More sharing options...
AM Posted May 19, 2022 Author Share Posted May 19, 2022 an idea (permutationsfaktor) used by HELMUT LACHENMANN for many of his pieces - to organize/build his strukturnetz. from an article by PIETRO CAVALLOTTI ("Die Funktion des Strukturnetzes am Beispiel von Mouvement (- vor der Erstarrung)") JulioHerrlein 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.