Research on the role of vision in speech began in the 1970s, when psychologist Harry McGurk dubbed the vocal sounds "bah," "kah," "gah," or "pah" onto a video of a real woman saying an alternate one of the four sounds.
Just as in Massaro's later work with the computerized talking head, McGurk found that people who watched the videos often misheard the words actually spoken. If the woman mouthed "gah," but was dubbed with a voice saying "bah," people usually heard "dah." When viewers turned their backs to the video, they heard "bah" correctly.
McGurk also discovered viewers couldn't force themselves to hear the correct vocal sounds when told they were being fed the wrong visual information. Combining the two types of information occured naturally. McGurk published his findings in a 1976 Nature paper.
McGurk Effect (01:57)
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reminded me of this one:
Vito Acconci - Open Book 1974 (09:39)
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make your own combinations here (scroll down)
make your own combination -->ITS FUN!!!