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Gestalt laws and sound simultaneity in electroacoustic
music
Raúl Minsburg
Universidad Nacional de Tres de Febrero
Universidad Nacional de Lanús
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Textura Texture
English
Oxford English Dictionary (1933)
Grove's Dictionary of Music and Musicians (1954)
Spanish
Diccionario Enciclopédico Quillet (1968)
Enciclopedia Espasa Calpe (1980)
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Musical Teaching
Simultaneity
Harmony Counterpoint Orchestration
¿Textures?
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Arnold Schoenberg
• “The accompaniment should not be a mere addition. It should be as functional as possible, and at best should act as a complement to the essentials of its subject.... Accompaniment becomes imperative if the harmony or rhythm is complicated”
¿Functional? ¿Complement? ¿Complicated?
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Walter Piston
Seven kind of orchestral textures
- Orchestral unison
- Melody and accompaniment
- Secondary melody
- Part writing
- Contrapuntal texture
- Chords
- Complex texture (combination two or more from I to IV)
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Leonard Meyer The way in which the mind groups concurrent
musical stimuli
• A single figure without any ground Monody • Several figures without any ground Poliphony • One (or more) figure accompanied by a ground Homophony • A superimposition of small similar motives Heterophony• Ground alone ¿?
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Dennis Smalley
Textures in electroacoustic music
Internal behaviour patterning
1) Enviromental sounds
2) Magnification of internal texture
3) Visual observation of textures
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Simultaneity in electroacoustics, acousmatic
(Sound based music - Landy) - Empirical/perceptual music.
- Voice, melodic line Sound object
- Difficult to predict the result of the meeting of two or more sounds.
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Gestalt Theory
1923 “Laws of Organization in Perceptual Forms ”
“... we do not experience a number of individual things.... Instead, larger wholes separated from and related to one another are given in experience. These arrangements follow definite principles or laws ”
1910
- Max Wertheimer - Kurt Koffka - Wolfgang Kohler
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Some of the laws- Perceptual constancy- Simplicity- Pregnancy (Good shape)- Common fate- Balance- Simmetry- Closure- Good Continuation- Proximity- Similarity- Figure - Ground
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Basic situation of simultaneity
- Two voices, sounds, sounding together: a difference at least in one of the parameters of the sounds
Instrumental Music Bach Ligeti
Electroacoustic Music
1 2 Parmegiani
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Similarity
Traditional Music = Pitch
- Fugue – String quartets
- Small intervals in melodic motion
- Virtual poliphony for one instrument.
We can extend it to other parameters of sound
Intensity - timbre - envelope – sound object
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Two sounds in simultaneity which are not separated in the frequency range , but in another sound parameter Chowning
Simultaneous sounds with difference in timbre and/or frequency range
Rapp
If there is no difference ... they won´t be differentiated. Chowning
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Proximity
We link sounds according to their nearness.
Even if they are very different, they make a perceptual unity
El otro espejo
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Two kind of unities
1) Pair attack – sustain
Attack Sustain Parmegiani Beethoven
2) Cell:different sound objects that can not be separate by our ear.
Schaeffer examples
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Albert Bregman
Auditory Stream
A perceptual unit that represents a single happening
It can incorporate more than one It´s perceptual, not sound (footsteps, birds) physical
Rapp
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¿When does our perception get lost?
When we listen more that three voices in sound simultaneity, we perceive their global characteristics, we perceive a group, a structure, a web.
- Poliphonic music
- Contemporary music
- Ambience sounds
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• Structure, configuration, Gestalt unity. When the listener cannot perceived single lines but a
whole = statistical audition.
• Textural passage - Mountain When the listener's attention is drawn to the overall
sonic image and the interplay of the component elements rather than on any one individual line
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Classification of textures• Monody• Homophony• Polyphony• Heterophony
Vocal and instrumental music
?
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Which is the real difference between heterophony and polyphony?
Does the homophony include all kinds of accompaniments?
Is there only one kind of monody?
In which measure does timbre can change the perception of a texture?
Can different accompaniments create different homophonys?
If so: which ones? How many? If it doesn´t: why?
Can these four textures include all combination of voices?
Is counterpoint the same in Machaut, Gesualdo, Schoenberg,
Strawinsky, Ligeti? And if it changes…polyphony also changes?
How much is “poly”? Three, ten, forty, one hundred?
Does “hetero” refers to the amount or to the kind of voices?
Can polyphony be different because of harmonic features?
And should we use the same name for it?
If “voice” means “melodic line”: what role has pitch in textures?
If we talk about rythmic polyphony can we talk about rythmic monody?
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New terms?
New expressions?
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a) Quantity
1- One
Monody
2 - Few
2 to 3 - 4
Homophony
Polyphony
Heterophony
3 - Many
More than 4
Structure
b)Functionality
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• One
• Two
• Three
voice
voicesvoices
•Sound/s (different)
•Sound object/s (diff.)
•Auditory stream/s (diff.)
1- One 2 - Few 3 - Many
2 to 3 - 4 More than 4
Monody Homophony Structure
Polyphony
Heterophony
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Simple Complex Single figure/s no ground Several figures no ground
Figure/s with ground Three (or more) figure with ground
Simple ground Composed ground
De Armas Dhomont
RudyParmegiani
RMBelloc
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Why does some sounds form a structure?
Why do we link, perceptually, heterogeneous objects?
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Context
We link sounds if they are grouped by the context.
-Ambience situation = a specific space
- Sound Simultaneity = Structure in contemporary music
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Ambience situation
Extraction of the sound from it´s original context
Listening unnoticed sound qualities
Ambience Beetle
Transformation of each one of those sounds
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Entre sueños
Gradual change of context
Modulation from a real ambience to an
artificial one
Confluence of textural and discoursive
features
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Evocation Abstraction
Quotation
. Direct reference of a sound/music
. Indirect or allusive reference
. Pure musical meaning/functionality
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Overlapping of several leyers
Slow transformation (or modulation) from one section to another
Prolongation - Anticipation
Subtle appearance of a sound or a group
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Subtle appearance of a sound or a group
A tu memoria
Trigger Insert
Ambiences Together
Sustained notes Note and ambience And more...
All =
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Increasing or decreasing layers according to discourse
1 2 3 4 2+4 5 6 Días después…
Cantos lejanos
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Sound discourse – Perception of form
Contrasts or links between a groupe, a structure, and the next one.
- Soft changes = transitions, processes
- Sudden changes = discontinuities
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Good continuation
Formal or discoursives features
- Directional Processes = decay or growth in intensity
It can be interrupted = surprise Días después…
It can conclude = expectation Voces del recuerdo
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Problems to be resolved
• Ambiguity of some sounds, specially regarding the figure/ground relationship.
• Confluence of texture and discourse.
• Aplication of other Gestalt laws: ambiguity, common fate, simplicity, etc.
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Possible derivations
- Perception of simultaneity
Musical textures: acousmatic, sound based music with intruments
Audiovisual Textures
- Perception of form: integration with other arts
(Temporal changes)