Symbolic Representations of Music
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Transcript of Symbolic Representations of Music
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Symbolic Symbolic Representations Representations
of of MusicMusic
Ichiro Fujinaga 2005Ichiro Fujinaga 2005
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Computer representation Computer representation by application categoryby application category
Score-basedScore-based DARMS, CMN, SMDL, NIFF, GUIDODARMS, CMN, SMDL, NIFF, GUIDO
GesturalGestural MIDIMIDI
AnalyticalAnalytical Humdrum / **kernHumdrum / **kern
CompositionalCompositional Music N, Smoke, Nyquist, OpenMusic, ElodyMusic N, Smoke, Nyquist, OpenMusic, Elody
AudioAudio MP3, au, wav, sdii, ra, qt, sndMP3, au, wav, sdii, ra, qt, snd
DescriptiveDescriptive MPEG4, MPEG 7, MPEG21MPEG4, MPEG 7, MPEG21
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Score-based FormatsScore-based Formats
Binary formatsBinary formats Sibelius (Proprietary)Sibelius (Proprietary) Enigma (Finale - proprietary?)Enigma (Finale - proprietary?) NIFF (Notation Interchange File Format)NIFF (Notation Interchange File Format) Score (Leland Smith)Score (Leland Smith)
Ascii / Unicode formatsAscii / Unicode formats DARMS (1963)DARMS (1963) cmncmn GUIDOGUIDO LilyPond (GNU project)LilyPond (GNU project) HTML / XMLHTML / XML
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ExamplesExamples
GUIDOGUIDO[\clef<"treble"> \meter<"4/4"> d/4 e/8 f# g a b c#2 d/2 _/2][\clef<"treble"> \meter<"4/4"> d/4 e/8 f# g a b c#2 d/2 _/2]
DARMSDARMS
!I1 !I1 !G !M4/4 0Q 1E 2# 3 4 5 6# 7H RH!G !M4/4 0Q 1E 2# 3 4 5 6# 7H RH
cmncmn
(staff treble d4 q e4 e fs4 e a4 e b4 e cs5 d5 h half-rest)(staff treble d4 q e4 e fs4 e a4 e b4 e cs5 d5 h half-rest)
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HTML / XMLHTML / XML
SMDL (Hytime, SGML)SMDL (Hytime, SGML) MHTMLMHTML MusicMLMusicML MusiXMLMusiXML MusicXMLMusicXML MusiqueXMLMusiqueXML XmusicXmusic Etc.Etc.
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Example of MusicXMLExample of MusicXML
<note> <pitch>
<step>A</step> <octave>4</octave> </pitch>
<duration>4</duration> <type>half</type>
<stem>up</stem> <notations> <slur type="start” number="1"/>
<tied type="start"/> </notations>
</note>
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Gesture / PerformanceGesture / Performance
Piano rollPiano roll
MIDI (SMF)MIDI (SMF) UbiquitousUbiquitous
Keyboard -centric (note and velocity)Keyboard -centric (note and velocity)
SKINI (SKINI (Synthesis toolKit Instrument Synthesis toolKit Instrument Network Interface)Network Interface)
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Analytical (Humdrum /** Analytical (Humdrum /** kern)kern)
!! Fux: "Gradus ad Parnassum”**kern*M4/4*k[]=1-2d/4f/4a/=22b-/2a/==|!*-
Represents Represents syntacticsyntactic rather than rather than orthographicorthographic information information
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CompositionalCompositional
Music N (Csound)Music N (Csound) Smoke (Smalltalk)Smoke (Smalltalk) Nyquist (Lisp)Nyquist (Lisp) Max/MSP (visual object-oriented graphical Max/MSP (visual object-oriented graphical
programming environment)programming environment) Elody (java, MIDI, visual functional programming Elody (java, MIDI, visual functional programming
environment)environment) OpenMusic (visual Lisp-based programming OpenMusic (visual Lisp-based programming
environment)environment) SuperCollider, Kyma, etc.SuperCollider, Kyma, etc.
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Csound exampleCsound example
Orchstra fileOrchstra file
Score fileScore file
instr 1asig oscil 1000, cpspch(p5), 1out asig
endin
f1 0 256 10 1 ; a sine wave table; a pentatonic scale; start dur amp pitchi1 0 .5 0 8.01i1 0.5 . . 8.03i1 1.0 . . 8.06i1 1.5 . . 8.08i1 2.0 . . 8.10e
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Smoke exampleSmoke example
[(EventList newNamed: #test1) add: (0 => (Event dur: 1/4 pitch: 'c3' ampl: 'mf'); add: (1 => ((Event new) dur: 6 ampl:0.3 sound: #s73bw))]
"C-minor fugue theme.” ((0.5 beat => ((1/4 beat), ('c3' pitch),
(voice: 'harpsichord'))), ((1/4 beat), ('b2' pitch)), ((1/2 beat), ('c3' pitch)),
((1/2 beat), ('g2' pitch)), ((1/2 beat), ('a-flat2' pitch)) )
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Nyquist example INyquist example ISequencesSequences
(defun note (pitch dur)(osc pitch dur *table*))
(play (seq (note c4 i)(note d4 i)(note f4 i)(note g4 i) (note d4 q)))
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Nyquist example IINyquist example IITransformationTransformation
; env-note produces an enveloped note. The duration defaults
; to 1.0, but stretch can be used to change the duration.;(defun env-note (p)
(mult (note p 1.0)(env 0.05 0.1 0.5 1.0 0.5 0.4)))
; now use stretch to play different durations;(play (seq (stretch 0.25(seq (env-note c4)
(env-note d4))) (stretch 0.5 (seq (env-note f4)
(env-note g4))) (env-note c4)))
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Descriptive / Descriptive / compressioncompression
MPEG 4MPEG 4 structured audio (SAOL)structured audio (SAOL)
MPEG 7MPEG 7 a standard for describing features of a standard for describing features of
multimedia contentmultimedia content
MPEG 21MPEG 21 an open framework for multimedia an open framework for multimedia
delivery and consumptiondelivery and consumption
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Music Representation by Music Representation by HumansHumans
Symbolic?Symbolic?
SearchSearch
RecallRecall
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Music Representation by Music Representation by HumansHumans
Symbolic?Symbolic?
SearchSearch
RecallRecall
IdentificationIdentification Example 1Example 1
Example 2Example 2
Example 3Example 3