Editing Kismet (robot) (section)

===Motor system===
Kismet speaks a proto-language with a variety of phonemes, similar to a baby's babbling. It uses the [[DECtalk]] voice synthesizer, and changes pitch, timing, articulation, etc. to express various emotions. Intonation is used to vary between question and statement-like utterances. Lip synchronization was important for realism, and the developers used a strategy from animation:<ref>Madsen, R. ''Animated Film: Concepts, Methods, Uses''. Interland, New York, 1969</ref> "simplicity is the secret to successful lip animation." Thus, they did not try to imitate lip motions perfectly, but instead "create a visual shorthand that passes unchallenged by the viewer."