An Analysis of the Effect of Emotional Speech Synthesis on Non-Task-Oriented Dialogue System

Yuya Chiba, Takashi Nose, Taketo Kase, Mai Yamanaka, Akinori Ito


Abstract
This paper explores the effect of emotional speech synthesis on a spoken dialogue system when the dialogue is non-task-oriented. Although the use of emotional speech responses have been shown to be effective in a limited domain, e.g., scenario-based and counseling dialogue, the effect is still not clear in the non-task-oriented dialogue such as voice chatting. For this purpose, we constructed a simple dialogue system with example- and rule-based dialogue management. In the system, two types of emotion labeling with emotion estimation are adopted, i.e., system-driven and user-cooperative emotion labeling. We conducted a dialogue experiment where subjects evaluate the subjective quality of the system and the dialogue from the multiple aspects such as richness of the dialogue and impression of the agent. We then analyze and discuss the results and show the advantage of using appropriate emotions for the expressive speech responses in the non-task-oriented system.
Anthology ID:
W18-5044
Volume:
Proceedings of the 19th Annual SIGdial Meeting on Discourse and Dialogue
Month:
July
Year:
2018
Address:
Melbourne, Australia
Editors:
Kazunori Komatani, Diane Litman, Kai Yu, Alex Papangelis, Lawrence Cavedon, Mikio Nakano
Venue:
SIGDIAL
SIG:
SIGDIAL
Publisher:
Association for Computational Linguistics
Note:
Pages:
371–375
Language:
URL:
https://aclanthology.org/W18-5044
DOI:
10.18653/v1/W18-5044
Bibkey:
Cite (ACL):
Yuya Chiba, Takashi Nose, Taketo Kase, Mai Yamanaka, and Akinori Ito. 2018. An Analysis of the Effect of Emotional Speech Synthesis on Non-Task-Oriented Dialogue System. In Proceedings of the 19th Annual SIGdial Meeting on Discourse and Dialogue, pages 371–375, Melbourne, Australia. Association for Computational Linguistics.
Cite (Informal):
An Analysis of the Effect of Emotional Speech Synthesis on Non-Task-Oriented Dialogue System (Chiba et al., SIGDIAL 2018)
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PDF:
https://aclanthology.org/W18-5044.pdf
Attachment:
 W18-5044.Attachment.pdf