Pepper Communicates Mainly By Voice - SoftBank Pepper Manual

03
PEPPER
COMMUNICATES
MAINLY BY VOICE
Human communication is filled with a lot of subtle signals,
like facial expressions, body language, emphasis, and
intonations. Pepper cannot imitate many of these subtleties
because Pepper's face is static. Pepper's gestures are not
as flexible as a human's and Pepper's voice utilizes text-
to-speech software. Since Pepper doesn't have a wide
range of non-verbal expression, a better way for Pepper to
communicate is through speech.