What is the appropriate speech rate for a communication robot?
This study investigates the influence of a robot’s speech rate. In human communication, slow speech is considered boring, speech at normal speed is perceived as credible, and fast speech is perceived as competent. To seek the appropriate speech rate for robots, we test whether these tendencies are replicated in human-robot interaction by conducting an experiment with four rates of speech: fast, normal, moderately slow, and slow. Our experimental results reveal a rather surprising trend. Participants prefer normal and moderately slow speech to fast speech. A robot that provides normal or moderately slow speech is perceived as competent. We further study how context affects this perception. In a situation where the robot and participants talk while walking, we found that slow speech was the most comprehensible. In addition, slow speech is subjectively perceived as good as moderately slow and normal speech. Keywords: Human-robot interaction; speech rate
Published online: 19 December 2012
Cited by 5 other publications
Ayanoğlu, Hande & João S. Sequeira
Breazeal, Cynthia, Kerstin Dautenhahn & Takayuki Kanda
Shiomi, Masahiro, Takahiro Hirano, Mitsuhiko Kimoto, Takamasa Iio & Katsunori Shimohara
Shiomi, Masahiro, Hidenobu Sumioka & Hiroshi Ishiguro
Sorbello, Rosario, Antonio Chella, Marcello Giardina, Shuichi Nishio & Hiroshi Ishiguro
This list is based on CrossRef data as of 10 february 2021. Please note that it may not be complete. Sources presented here have been supplied by the respective publishers. Any errors therein should be reported to them.