;======================================
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;OM-Lead, 2022-2023
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;
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;Library for Rule-based Voice-Leading
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;Author: Lorenz Lehmann
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;Supervision: Marlon Schumacher
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;======================================
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(in-package :omlead)
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(om::defmethod! gen-harmonies ((pitch-set-list list) (instr1 list) (instr2 list) (instr3 list) (instr4 list) &key (fundamental 6000) (skala (list 100)) (permutations t) (register-list '(0)))
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:icon 030719972
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:initvals '('((0)) '(6000 7200) nil nil nil)
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:indoc '("a list of lists of intervals respective to a base not in midi-cents" "range-list with the lowest and highest note of the instrument in midi-cents" "range-list with the lowest and highest note of the instrument in midi-cents" "range-list with the lowest and highest note of the instrument in midi-cents" "range-list with the lowest and highest note of the instrument in midi-cents" "list of intervals based on the virtual fundamental which defines the <octave> for register-transposition")
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:numouts 1
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:doc "creates a list of chords, that contains all possible transpositions & permutations of the given pitch-sets"
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun circular_oml (items)
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(setf (cdr (last items)) items)
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items)
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(defun flat_oml (liste)
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(cond
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((null (cdr liste))
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(if (atom (car liste))
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liste
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(flat_oml (car liste))))
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((and (listp (car liste)) (not (listp (cadr liste))))
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(append (car liste)
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(flat_oml (cdr liste))))
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((and (not (listp (car liste))) (not (listp (cadr liste))))
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(append (list (car liste))
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(flat_oml (cdr liste))))
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((and (listp (car liste)) (listp (cadr liste)))
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(append (car liste)
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(flat_oml (cdr liste))))
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((and (not (listp (car liste))) (listp (cadr liste)))
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(append (list (car liste))
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(flat_oml (cdr liste))))))
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(defun get-pos_oml (positions seq)
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(let ((positions (if (atom positions) (list positions) positions)))
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(mapcar #'(lambda (it) (nth it seq)) seq)))
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(defun permutations_oml (bag)
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(if (null bag)
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'(())
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(mapcan #'(lambda (e)
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(mapcar #' (lambda (p) (cons e p))
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(permutations_oml (remove e bag :count 1 :test #'eq))))
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bag)))
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(defun mat-trans_oml (list)
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(loop for y in (let (count-list)
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(dotimes (i (length (car list)))
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(setq count-list (cons i count-list))) (nreverse count-list))
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collect (loop for x in list collect (nth y x))
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))
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(defun modulo_oml (pos liste)
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(append
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(nthcdr pos liste)
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(butlast liste (- (length liste) pos))))
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(defun register-permut_oml (register-list)
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(remove-duplicates
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(om::flat
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(loop for r in register-list
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collect
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(mapcar #'(lambda (l) (permutations_oml
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(append (make-list l :initial-element r)
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(make-list (- (length register-list) l) :initial-element 0))))
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(loop for x from 1 to (length register-list)
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collect x))) 2) :test 'equal))
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(defun find-pos_oml (item seq)
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(remove nil (loop for s in seq
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for x
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collect (if (equal item s) x))))
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(defun sum_oml (liste)
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(if (null (cdr liste))
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(car liste)
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(+ (car liste)
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(sum_oml (cdr liste)))))
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(defun variations_oml (liste pcl)
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(let* ((liste (remove-duplicates liste))
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(liste (make-list pcl :initial-element liste)))
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(apply #'alexandria:map-product #'list liste)))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(let* (
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(instr-list (sort (flat_oml (remove nil (list instr1 instr2 instr3 instr4))) '<))
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(total-range (cons (car instr-list) (last instr-list)))
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(trans-skala (let* ((grundton fundamental)
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(tief (car total-range))
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(hoch (cadr total-range))
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(skala-up skala)
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(skala-down (reverse skala-up))
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(endless-up (circular_oml skala-up))
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(endless-down (circular_oml skala-down))
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(skala-up (loop for i in endless-up
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sum i into delta
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until (> (+ delta grundton) hoch)
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collect i))
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(skala-down (loop for i in endless-down
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sum i into delta
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until (< (- grundton delta) tief)
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collect i))
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(transpositionsliste-up (list grundton))
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(transpositionsliste-down (list grundton)))
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(loop for i in skala-up
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do (push (+ (car transpositionsliste-up) i) transpositionsliste-up))
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(loop for i in skala-down
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do (push (- (car transpositionsliste-down) i) transpositionsliste-down))
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(append (butlast transpositionsliste-down) (reverse transpositionsliste-up))
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))
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(harmon-database (om::flat
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(loop for pitch in trans-skala
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collect
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(loop for set in pitch-set-list
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collect
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(mapcar #'(lambda (l) (+ pitch l)) set))) 1))
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(harmon-database (cond (permutations (om::flat (loop for l in harmon-database
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collect (permutations_oml l)) 1))
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(t harmon-database)))
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(harmon-database (remove-duplicates (om::flat (loop for a in harmon-database
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collect
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(loop for reg in (variations_oml register-list (length a))
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collect (mapcar #'(lambda (r p) (+ r p)) reg a))) 1) :test 'equal))
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(instr-list2 (remove nil (list instr1 instr2 instr3 instr4)))
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(harmon-database (loop for a in harmon-database
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collect (loop for p in a
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for count to (1- (length instr-list2))
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collect (if (or (< p (car (nth count instr-list2)))
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(> p (cadr (nth count instr-list2)))) nil p))))
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(harmon-database (remove nil (loop for a in harmon-database
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collect (if (> (count nil a) 0) nil a)))))
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harmon-database))
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