Extraction of Latent Emotional Factors by Analyzing Human Sensitivity towards Unexplored Design: Application to Product Sound Design

DS 58-7: Proceedings of ICED 09, the 17th International Conference on Engineering Design, Vol. 7, Design for X / Design to X, Palo Alto, CA, USA, 24.-27.08.2009

Year: 2009
Editor: Norell Bergendahl, M.; Grimheden, M.; Leifer, L.; Skogstad, P.; Lindemann, U.
Author: Yanagisawa, Hideyoshi; Kataoka, Atsushi; Murakami, Tamotsu; Ohtomi, Koichi; Hosaka, Rika
Section: Design for X, Design to X
Page(s): 13-24


In the design of emotional qualities one of the most important and difficult issues is setting quantitative evaluation criteria to evaluate such qualities. Most conventional approach formalizes emotional qualities expressed by adjectives using the sensory test with existing products. However, the variety of existing products is limited. The obtained evaluation criteria may not cover areas of a design space where future designs would appear. In this paper, we propose a method to cover such untouched area using composite design sample. We apply the method to extract a potential factor for the future design of product sound quality. To create such composite design samples, we set efficient design features that take into consideration the completeness of design space and the diversity of a target emotional quality that we quantify using the results of sensory tests with existing products. We conducted sensory test with composite design samples, in order to discuss changes introduced by adding composite samples. We extracted a new emotional scale of target emotional quality "expensiveness of machine sound" that was not found in the sensory test based only on the existing product sound.

Keywords: emotional quality, design for machine sound, sound quality metrics, unexplored feature area, multivariate analysis.


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