Computation for Sound Processing Psycho Georg Essl Psychology

Computation for Sound Processing Psycho 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”

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)