Circles Sines and Signals - Introduction - 1 views
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This text is designed to accompany your study of introductory digital signal processing.1 It’s an eccentric piece of not-so-rigorous literature with a preoccupation for explaining things using interactive visualizations, animations and sound.
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In the vein of Bret Victor's Explorable Explanations, this site uses several interactive visualizations to explain complex topics
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Great example. He even references Victor's Magic Ink essay http://worrydream.com/#!/MagicInk