complete-set/make-complete-set [ Functions ]
[ Top ] [ complete-set ] [ Functions ]
DESCRIPTION
Create a complete-set object, which as an extension of the tl-set class allows checking for full sets: ones in which every note of *standard-scale* is present.
ARGUMENTS
- A set of pitches. This can either take the form of a list of note-name symbols or a complete-set, tl-set or sc-set object.
OPTIONAL ARGUMENTS
keyword arguments: - :id. An number, symbol or string that is to be the ID of the given complete-set object (see doc for sc-set). - :tag. A number, symbol or string that is secondary name, description, tag etc. for the given complete-set object. The :tag serves for identification but not searching purposes (see doc for named-object). - :subsets. An assoc-list of key/data pairs, in which the data is a list of note-name symbols that are a subset of the main set. One use for this keyword argument might be to create subsets that particular instruments can play; these would then be selected in the chord-function passed to the instrument object (see doc for sc-set). - :related-sets. An assoc-list of key/data pairs, similar to :subsets, only that the pitches given here do not have to be part of the main set. This can be used, for example, for pitches missing from the main set (see doc for sc-set). - :auto-sort. T or NIL to indicate whether the specified pitches (note-name symbols) are to be automatically sorted from lowest to highest. T = sort. Default = T. (see doc for sc-set) - :transposition. A number that is the number of semitones by which the pitches of the new complete-set are to be transposed when the object is created. Default = 0. (see doc for tl-set) - :limit-upper. A note-name symbol or a pitch object to indicate the highest possible pitch in the given complete-set object to be created. (see doc for tl-set) - :limit-lower. A note-name symbol or a pitch object to indicate the lowest possible pitch in the complete-set object to be created. (see doc for tl-set) - :complete. T, NIL, or 'CHROMATIC. This argument can be given at init, and if the set is not complete in the sense of T or 'CHROMATIC (all chromatic, equally-tempered notes are present in the set), a warning is printed. If the set is neither T nor 'CHROMATIC at init, then no warning will be issued. In both cases the COMPLETE slot of the given complete-set object will be set after checking the set.
RETURN VALUE
A complete-set object.
EXAMPLE
;; Create a complete set using a list of note-name symbols and the default ;; values for the keyword arguments (make-complete-set '(d2 f2 a2 c3 e3 g3 b3 d4 gf4 bf4 df5 f5 af5 c6)) => COMPLETE-SET: complete: NIL num-missing-non-chromatic: 12 num-missing-chromatic: 1 missing-non-chromatic: (BQS BQF AQS AQF GQS GQF FQS EQS EQF DQS DQF CQS) missing-chromatic: (EF) TL-SET: transposition: 0 limit-upper: NIL limit-lower: NIL SC-SET: auto-sort: T, used-notes: RECURSIVE-ASSOC-LIST: recurse-simple-data: T num-data: 0 linked: NIL full-ref: NIL ASSOC-LIST: warn-not-found T CIRCULAR-SCLIST: current 0 SCLIST: sclist-length: 0, bounds-alert: T, copy: T LINKED-NAMED-OBJECT: previous: NIL, this: NIL, next: NIL NAMED-OBJECT: id: USED-NOTES, tag: NIL, data: NIL N.B. All pitches printed as symbols only, internally they are all pitch-objects. subsets: related-sets: SCLIST: sclist-length: 14, bounds-alert: T, copy: T LINKED-NAMED-OBJECT: previous: NIL, this: NIL, next: NIL NAMED-OBJECT: id: NIL, tag: NIL, data: (D2 F2 A2 C3 E3 G3 B3 D4 GF4 BF4 DF5 F5 AF5 C6) ;; A new complete-set object can be created from tl-set and sc-set objects (let ((mcs (make-complete-set (make-tl-set '(d2 f2 a2 c3 e3 g3 b3 d4 gf4 bf4 df5 f5 af5))))) (pitch-symbols mcs)) => (D2 F2 A2 C3 E3 G3 B3 D4 GF4 BF4 DF5 F5 AF5) (let ((mcs (make-complete-set (make-sc-set '(d2 f2 a2 c3 e3 g3 b3 d4 gf4 bf4 df5 f5 af5))))) (pitch-symbols mcs)) => (D2 F2 A2 C3 E3 G3 B3 D4 GF4 BF4 DF5 F5 AF5) ;; Using the other keyword arguments (make-complete-set '(d2 f2 a2 e3 g3 b3 d4 gf4 bf4 df5 f5 af5) :id 'csset :subsets '((low (d2 f2 a2)) (mid (b3 d4))) :related-sets '((not-playable (dqs2 eqf3))) :transposition 3 :limit-upper 'g5 :limit-lower 'e2) => COMPLETE-SET: complete: NIL num-missing-non-chromatic: 12 num-missing-chromatic: 3 missing-non-chromatic: (BQS BQF AQS AQF GQS GQF FQS EQS EQF DQS DQF CQS) missing-chromatic: (B FS EF) TL-SET: transposition: 3 limit-upper: PITCH: frequency: 783.991, midi-note: 79, midi-channel: 0 [...] data: G5 limit-lower: PITCH: frequency: 82.407, midi-note: 40, midi-channel: 0 [...] data: E2 SC-SET: auto-sort: T, used-notes: RECURSIVE-ASSOC-LIST: recurse-simple-data: T [...] ASSOC-LIST: warn-not-found T CIRCULAR-SCLIST: current 0 SCLIST: sclist-length: 0, bounds-alert: T, copy: T LINKED-NAMED-OBJECT: previous: NIL, this: NIL, next: NIL NAMED-OBJECT: id: USED-NOTES, tag: NIL, data: NIL N.B. All pitches printed as symbols only, internally they are all pitch-objects. subsets: LOW: (F2 AF2 C3) MID: (D4 F4) related-sets: NOT-PLAYABLE: (DQS2 EQF3) SCLIST: sclist-length: 12, bounds-alert: T, copy: T LINKED-NAMED-OBJECT: previous: NIL, this: NIL, next: NIL NAMED-OBJECT: id: CSSET, tag: NIL, data: (F2 AF2 C3 G3 BF3 D4 F4 A4 CS5 E5)
SYNOPSIS
(defun make-complete-set (set &key id tag subsets related-sets (transposition 0) (auto-sort t) limit-upper limit-lower complete)
tl-set/complete-set [ Classes ]
[ Top ] [ tl-set ] [ Classes ]
NAME
complete-set File: complete-set.lsp Class Hierarchy: named-object -> linked-named-object -> sclist -> sc-set -> tl-set -> complete-set Version: 1.0.0-beta2 Project: slippery chicken (algorithmic composition) Purpose: Implementation of the complete-set class which as an extension of the tl-set class allows checking for full sets: ones in which every note of the current scale is present. Author: Michael Edwards: m@michael-edwards.org Creation date: 10th August 2001 $$ Last modified: 23:44:19 Thu May 3 2012 CEST SVN ID: $Id: complete-set.lsp 1982 2012-05-24 15:35:54Z medward2 $