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Wednesday, July 10 • 17:30 - 17:50
CREATING VISUAL IMAGES WITH SOUND AND VIBRATION

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There are many examples of visual images stemming from sound and vibration. Lissajous figures, named after the French mathematician Lissajous (d.1880), have long been a source of fascination and some have been used as commercial logos. Much attention has been given to Chladni figures, named after the father of modal analysis, Ernst Chladni (d. 1827). An extensive collection was published by Mary Waller (d. 1959) and Hans Jenny (d. 1972) photographed the response to high-frequency excitation of many different physical systems, solids, liquids and powders. Other examples of visual images include the response of thin metal plates to wide-band random vibration by which Chladni-type patterns may be generated. These essentially two-dimensional figures have been extended recently by Woodhouse to three dimensions. A three-dimensional sonogram has been used to cut decoration into new doors in a synagogue in Oxford.

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OR

Olivier Robin

Research professional, Groupe d'acoustique de l'université de Sherbrooke

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Wednesday July 10, 2019 17:30 - 17:50 EDT
Outremont 7
  T13 Acoustical education, SS01 Educ in ac: catching attention …