This demo simulates some aspects of synesthesia, specifically, colored letters. Nothing's quite the same as having it yourself, but the web and multimedia make close approximations possible. As you read the first sentence of this essay, put your mouse-pointer over a particular letter and watch it change color.
Stephen Malinowski and his wife Lisa Turetsky have created a page demoing Malinowski's Music Animation Machine, which represents works of music in color as a sequence of moving bars and blocks accompanying the score. In some ways this is analogous to colored hearing synesthesia.
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