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Human Interaction

Human Interaction. How do people get information?. Vision 55MB/sec Audio 64 KB/sec Touch 400 B/sec Taste Lower. How do people express information?. Audio Speech Muscle movement Dexterity Muscle Memory. Vision. Retina. Lens. Iris. Retina. Iris. Retina – 64 levels 6 bits.

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Human Interaction

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  1. Human Interaction

  2. How do people get information? • Vision • 55MB/sec • Audio • 64 KB/sec • Touch • 400 B/sec • Taste • Lower

  3. How do people express information? • Audio • Speech • Muscle movement • Dexterity • Muscle Memory

  4. Vision

  5. Retina Lens Iris

  6. Retina Iris

  7. Retina – 64 levels 6 bits Iris

  8. Periphery Macula/Fovea

  9. Rods (gray) Cones (color)

  10. 20 Rods / 1 Cone Rods (gray) Cones (Red 64% Green 33% Blue 3%)

  11. 20 Rods / 1 Cone Rods (gray) Cones (Red 64% Green 33% Blue 3%)

  12. Saccade = 200 msecs 5 / sec

  13. Nature of the Macula • Get a section of text • Focus on one word • Try to read surrounding words • WITHOUT MOVING YOUR EYES

  14. Periphery/Macula • Macula • Careful close study • Very slow • Small window • 5 times / second • Color • Periphery • Gray and blurry • Fast targeting • If you must find things by reading and study • Macula / Saccade • Very Slow • If you can find things with the periphery • Gray, Blurry • Very Fast

  15. Retina Lens Periphery Macula/Fovea Iris

  16. Buy play tickets (tasks) • What shows are playing? • What shows are available near where I live? • What do they cost?

  17. 3D Perception • Occlusion • Retinal Disparity • Kinetic Depth effect

  18. Audio • Human hearing • 20Hz to 18Khz • Best hearing • 1Khz to 5Khz • Speech • 500 Hz to 3Khz

  19. Why use audio? • Attention • Eyes free • Form factor • Energy • Express what you cannot currently see

  20. Touch/Tactile • Vibration and skin deformation • Hairy skin • Vibration sensors at the base of each hair • Glabrous skin • No hair • Ridges with vibration sensors • Vibration up to 400 Hz • 2mm spatial resolution on fingers • Temperature • Heat dissipation • Pain

  21. Human Expression • Audio • Keyboard • Pointing • Object movement

  22. Audio • Speech • 125-150 Words per minute • Reference the unseen • Association with shared experience • Ambiguity • Recognition accuracy • Privacy • Non speech

  23. Keyboard • 50-70 Words per minute • Ideographic Languages

  24. Pointing • Human movement • Muscle size / body part mass • Speed of movement • Fatigue

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