In this Webel mini-tutorial trail for PureData synthesis you'll find some snapshots of patches used to create the "sound circles" animated logo for the PLAYlogo music/art projects. Each circle (created with PureData/GEM) corresponds to an evolving oscillator frequency with evolving amplitude and pan. There are 8 circles in all, 7 coloured after the optical spectrum, and one white outer circle, giving a composite sound with 1 base frequency and 7 harmonics (in the case where the ratio between frequencies is 2, i.e. an octave).
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You can see and hear it in action here: ARCHIVAL: Video: The PLAYlogo synthesised light-sound circles (Pure Data + GEM)
Slides in this gallery
Click on any slide to view it larger in a viewer, click again to move through each slide in the gallery. Click on the title link of a slide to view the full slide page.