Computation for Sound ProcessingPsycho
Georg Essl
Psychology of (Re)Cognition
• Cognition is• Vision
• Audition
• Touch, Smell, Taste, …
• … and recognition of stuff!
• What is this “stuff?”
• When do we confuse “stuff?”
Don’t Give Me That Weird Eye
• Psychological Effects in Vision
• Ambiguity
• Categorical Seeing
• Mis-Classification
• Absurd Constructions
• Perspective/Depth Assumptions
• Color, Size, Relation, Orientation …
Canonical Ambiguities
Canonical Ambiguities
Necker Cube Schroeder Stairs
Illusions
• When we get “stuff” wrong• Size
• Shape
• Color
Size Illusion
• Size and Distance – Mario Ponzo
Size Illusion
• Size and Color – Joseph Jastrow
Size Illusions
• Size and Angles – Mueller & Lyer
Size Illusion
• Size and Angle (2) - Sander
Size Illusions
• Size and Perspective – Roger Shepard
Size Illusion
• Object Size
Shape Illusion
• Bristol Café – Richard Gregory
Shape Illusion
Zoellner
Shape Illusions
Shape Illusions
• Orbison
Color Illusion
• Hermann Grid
Color Illusion
• Checker Shadow – Ted Adelson
Color Illusion
• Checker Shadow – Ted Adelson
Color Illusion
Bridget Riley – “Movement in Squares”Bridget Riley – “Movement in Squares”
Moving Illusion
• Ouchi Illusion
Fill in the Blanks
• Seeing what isn’t there
• Kanisza figure
Quickly – False Reality
• Messed Up Visuals
• Geometry
• Representation
• Categories
M. C. Escher
Pieter Buegel - 'The Magpie on the Gallows' (1568)
Oscar Reutersvaerd
Salvatore Dali - “Invisible Afghan with the Apparition on the Beach of the Face of Garcia Lorca in the Form of a …”
Salvatore Dali - “Swans reflecting elephants“
Salvatore Dali - “Fifty Abstract Pictures Which ... Appear as the Head of a Royal Bengal Tiger”
Rene Magritte
OK, Enough Vision
• Sound Illusions exist too.
• Merging to Beats (2)
• Masking (3)
• Completion (5)
• “Common Fate” (6)
Sound
• Cocktail Party Effect (22)
• Precedence Effect (23)
• Musical Groupings (31-33)
• Separations of Melodies (34)• Frequency distance, Volume, Timbre
Sound
• Voice Separation:
• Wessel Loop (36)
• Musical Example, two melody play on violin (37)
Word/Phoneme Groupings
• Silence gaps: Ara ala -> Arda Alga (46)
• Gray ship or not (47)
Melody Recognition
• Shepard Tritone Paradox (52)
• Scrambled Melodies (53)
Musical Escher
• Infinite Upward Motion
• Risset glissando (54)
• Original discrete Shepard tones (55)
• Tempo Illusions• Risset, Ligeti (56)
• More Shepard (57)