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Introduction to Mappings

Introduction to Mappings. MUMT303. Mappings:. “Mappings are transformations used to convert input parameters to outputs in a different domain.”. Classes of mapping based on: number of inputs to number of outputs. Many-to-one One-to-many One-to-one Many-to-many. Synaesthetic Mappings.

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Introduction to Mappings

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  1. Introduction to Mappings MUMT303

  2. Mappings: • “Mappings are transformations used to convert input parameters to outputs in a different domain.”

  3. Classes of mapping based on:number of inputs to number of outputs • Many-to-one • One-to-many • One-to-one • Many-to-many

  4. Synaesthetic Mappings • Synaesthesia: • “A psychological term that refers to a mixing of the senses that occurs in certain individuals.” • “It is said to occur when a person perceives something via one sense modality and experiences it through an additional sense.” • Synaesthesia can occur with written characters and color: • The letter T asight always be perceived as orange • The letter Omight always be perceived as blue • Synaesthete: • “A person who experiences synaesthesia.”

  5. Synaethetic Mappings (continued) • Audio-to-visual mappings can be accomplished to reveal logic. • Sounds can be correlated to a logical physical image. • Fundamental Frequency => Size of object • Higher frequency = smaller object • Lower frequency = larger object • Amplitude => Brightness of object • Loud sounds = bright object • Quiet sounds = dim objects

  6. Synaethetic Mappings (continued) • Example: • Norman McLaren’s 1971 work Synchromy: • http://www.youtube.com/watch?v=Jqz_tx1-xd4 • "Each note, chord, and rest is clearly visible; the close correlation produces a strong synaesthetic effect."

  7. Synaethetic Mappings (continued) • Timbre mapping to images is more abstract • “Characterizing musical timbre in terms of perceptually salient quantities is a complex task” • However, psychoacoustic research shows a tendency towards certain characteristics. • E.g. In a 1929 experiment, subjects were asked which image is a “kiki” and which is a “bouba” • In the experiment, 90% of people said the left is a “kiki” and the right is a “bouba”

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