1. Computation for Sound Processing Psycho
Georg Essl

2. Psychology of (Re)Cognition
Cognition is
Vision
Audition
Touch, Smell, Taste, …
… and recognition of stuff!
What is this “stuff?”
When do we confuse “stuff?”

3. 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 …

4. Canonical Ambiguities

5. Canonical Ambiguities
Necker Cube Schroeder Stairs

6. Illusions
When we get “stuff” wrong
Size
Shape
Color

7. Size Illusion
Size and Distance – Mario Ponzo

8. Size Illusion
Size and Color – Joseph Jastrow

9. Size Illusions
Size and Angles – Mueller & Lyer

10. Size Illusion
Size and Angle (2) - Sander

11. Size Illusions
Size and Perspective – Roger Shepard

12. Size Illusion
Object Size

13. Shape Illusion
Bristol Café – Richard Gregory

14. Shape Illusion
Zoellner

15. Shape Illusions

16. Shape Illusions
Orbison

17. Color Illusion
Hermann Grid

18. Color Illusion
Checker Shadow – Ted Adelson

19. Color Illusion
Checker Shadow – Ted Adelson

20. Color Illusion

21. Bridget Riley – “Movement in Squares”

22. Moving Illusion
Ouchi Illusion

23. Fill in the Blanks
Seeing what isn’t there
Kanisza figure

24. Quickly – False Reality
Messed Up Visuals
Geometry
Representation
Categories

25. M. C. Escher

26. Pieter Buegel - 'The Magpie on the Gallows' (1568)

27. Oscar Reutersvaerd

28. Salvatore Dali - “Invisible Afghan with the Apparition on the Beach of the Face of Garcia Lorca in the Form of a …”

29. Salvatore Dali - “Swans reflecting elephants“

30. Salvatore Dali - “Fifty Abstract Pictures Which
Salvatore Dali - “Fifty Abstract Pictures Which ... Appear as the Head of a Royal Bengal Tiger”

31. Rene Magritte

32. OK, Enough Vision Sound Illusions exist too. Merging to Beats (2)
Masking (3)
Completion (5)
“Common Fate” (6)

33. Sound Cocktail Party Effect (22) Precedence Effect (23)
Musical Groupings (31-33)
Separations of Melodies (34)
Frequency distance, Volume, Timbre

34. Sound Voice Separation: Wessel Loop (36)
Musical Example, two melody play on violin (37)

35. Word/Phoneme Groupings
Silence gaps: Ara ala -> Arda Alga (46)
Gray ship or not (47)

36. Melody Recognition Shepard Tritone Paradox (52)
Scrambled Melodies (53)

37. Musical Escher Infinite Upward Motion Risset glissando (54)
Original discrete Shepard tones (55)
Tempo Illusions
Risset, Ligeti (56)
More Shepard (57)