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Stephane Boussuge

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  1. Hi folks, a short electronic track in honor of Hubble telescope discovery... I've used the template shared here as starting point: Attached the Audio file, Opmo score and VCVRack. Best S. PillarsOfCreation.wav PillarsOfCreation.vcv PillarsOfCreation.opmo
  2. Hi folks, Here's an example using a template for Opusmodus and vcvrack. Feel free to use it as a starting point for your own experimentations, VCVRack is free and driving it with OM is a great fun ! Attached to this post, the 2 files used in this short video example. That file will be probably available in the next OM update. Enjoy ! VCVRackTemplate1.opmo VCVRackTemplate1.vcv
  3. Hi Julio, you can use get-span function: (setf ritmos (gen-repeat 4 (gen-length '((1 2 1 2 1 1) (1 1 1 1 1 2 1) (1 -3 1 -3 2 -2 4) (-3 1 -1 1 1 1)) '(16)))) (get-span ritmos) => (1/2 1/2 1 1/2 1/2 1/2 1 1/2 1/2 1/2 1 1/2 1/2 1/2 1 1/2) S.
  4. I use the software Spear: https://www.klingbeil.com/spear/
  5. musicxml-to-ly but if you use the great Lilypond Editor Frescobaldi, it is included in the menu and works very very well.
  6. Lilypond works also very well with Opmo.
  7. Hi folks, a work in progress, a first short piece from a series of four called "Quatre miniatures en duo" for Violin and Piano. S. Score1V4B.mp3 Quatre miniatures en duo.pdf
  8. Hi, the output of your loop get too many nested parenthesis. Use assemble-seq function to arrange this material as correct OMN expression usable by dictum. ;=====BIRDCALLS===== (setf bird1 '(3q d5 leg gs4 d5 leg gs4 d5 leg gs4)) (setf bird2 '(q a3 e. b3 x c5 leg e.. bb4)) (setf bird3 '(e fs4 leg c5 q bb4 3q fs4 stacc c5 bb4)) (setf rest1 '(-e)) (setf rest2 '(-q.)) (setf rest3 '(-e.)) ;=====OMN MAKER===== (setf loop1 (assemble-seq (gen-loop 7 (list (rnd-pick (list bird1 bird2 bird3)) (rnd-pick (list rest1 rest2 rest3)) (rnd-pick (list rest1 rest2 rest3)))))) (dictum '(:if e :do q) loop1)
  9. Hi, you can try this: ;=====BIRDCALLS===== (setf bird1 '(3q d5 leg gs4 d5 leg gs4 d5 leg gs4)) (setf bird2 '(q a3 e. b3 x c5 leg e.. bb4)) (setf bird3 '(e fs4 leg c5 q bb4 3q fs4 stacc c5 bb4)) (setf rest1 '(-q.)) (setf rest2 '(-h)) (setf rest3 '(-w)) ;=====OMN MAKER===== (apply-eval (rnd-sample 4 '(bird1 bird2 bird3 rest1 rest2 rest3)))
  10. Hi, I've made a function long long time ago around this idea not following strictly Hindemith if I remember it correctly but it was based on the same idea/concept. Here's my function, you can probably tweak it to your needs. Please, if you improve it in anyway, share your improvement so it could be useful for me and community as well. Stephane ;;;=============================================================== ;;; sort chords by tension ;;;=============================================================== ;;Idée: classer des accords generés de maniere X par tension avec une courbe de tensions. ;;Analyser un accord ;;1. extraire un vecteur d'intervalles ;;2. Analyser le vecteur ;;3. retourner le resultat (defun ana-tens (ivect) "renvoie le taux de tension harmonique d'un vecteur d'intervalles. utilitaire pour h-tens" (let* ((v1 (*(nth 0 ivect) 6)) (v2 (*(nth 1 ivect) 4)) (v3 (*(nth 2 ivect) 3)) (v4 (*(nth 3 ivect) 2)) (v5 (*(nth 4 ivect) 1)) (v6 (*(nth 5 ivect) 5)) (r (+ v1 v2 v3 v4 v5 v6))) r)) (defun h-tens (chord) (do-verbose ("h-tens") "renvoie le taux de tension harmonique relatif d'un accord." (let* ( (r0 (if (equal chord '(nil)) '(c4) chord)) ; Si nil, remplace par une valeur simple (c4) (r1 (melodize r0)) ;extraction du vecteur d'intervalles (r2 (pitch-to-integer r1)) (r3 (find-unique (modus r2))) (r4 (if (> (length r3) 1) (pcs-prime-form r3 :vector) '(0 0 0 0 0 0))) (r5 (ana-tens r4)) ;analyse du vecteur d'intervalles ;il faut ensuite diviser le resultat obtenu par le nombre de pcs (cardinal-number) du set et on obtient le niveau relatif de tension harmonique. ; on s'assure d'abord de ne pas avoir un accord à 1 seul accord (r6 (float (/ r5 (length r1)) 1.0))) r6 ;retourne le resultat ))) ;;;creation d'une fonction qui prend en entrée une suite d'accords et qui renvoie cette suite triée ;;;par ordre de tension harmonique croissant ou decroissant. (defun extraitcar (lst) (loop for i in lst collect (car i))) (defun extraitcdr (lst) (loop for i in lst collect (cdr i))) (defun sort-chords-tens-up (chords) "ordonne une suite d'accords par ordre croissant de tension harmonique" (do-verbose ("sort-chords-tens-up") (let* ((tens (mapcar 'h-tens chords)) (a-list (pairlis chords tens)) (sorted (stable-sort a-list #'< :key #'cdr)) (chordprog (extraitcar sorted))) chordprog))) (defun sort-chords-tens-down (chords) "ordonne une suite d'accords par ordre decroissant de tension harmonique" (do-verbose ("sort-chords-tens-down") (let* ((tens (mapcar 'h-tens chords)) (a-list (pairlis chords tens)) (sorted (stable-sort a-list #'> :key #'cdr)) (chordprog (extraitcar sorted))) chordprog))) #| ;;;Usage ;;we generate some chords (setf chords (chordize (gen-loop 12 (rnd-unique 4 (integer-to-pitch (gen-integer 12)))))) ;;we sort chords by up tension (setf chords-up (flatten (sort-chords-tens-up chords))) ;;we sort chords by down tension (setf chords-down (flatten (sort-chords-tens-down chords))) |# ;;;====================================================================================
  11. Hi, you can have a look to the function: pcs-super-sets
  12. When you bind a variables with setf somewhere in lisp and evaluate it, it becomes available for the whole system until you close it and in any workspace.
  13. In Common Lisp, `SETF` is a general-purpose assignment macro used to assign values to a designated place, such as a variable. It can be used for all forms of assignment, whether storing into an ordinary variable or a generalized variable. The syntax of `SETF` does not evaluate its first argument, which is the name of the variable. The second argument, which is the value to which the variable is set, is evaluated. The value returned by `SETF` is the value to which it set the variable. Comparatively, `DEFVAR` and `DEFPARAMETER` are used for defining variables, but with different implications and scopes. `DEFVAR` is used to establish a variable, but if the variable is already bound, redefining it with `DEFVAR` does nothing. `DEFPARAMETER`, on the other hand, always assigns a value to the variable, even if it is already bound. Both `DEFVAR` and `DEFPARAMETER` are typically used to define global variables, whereas `SETF` is used for assigning values to variables regardless of their scope. The scope of variables defined by `DEFVAR` and `DEFPARAMETER` is global, meaning the variables are accessible throughout the program. In contrast, `SETF` can be used within any scope, including local scopes within functions or global scopes, depending on where it is used. The key difference lies in their purposes: `DEFVAR` and `DEFPARAMETER` are for variable declaration (with `DEFPARAMETER` forcefully initializing the variable), while `SETF` is used for assigning or changing the value of a variable, irrespective of its scope.
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