Comfortable Sound Design of Automobile Trim Knocking Sound Based on Visual and Auditory Sensation

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  • 視覚と聴覚に基づく自動車トリム打音の快音化
  • シカク ト チョウカク ニ モトズク ジドウシャ トリム ダオン ノ カイオンカ

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Abstract

Common automobile trims are made of polypropylene with grained or wooden texture. Although people regard a trim as comfortable due to its high-grade appearance, once they knock it, they feel uncomfortable because the knocking sound is very cheap in contrast to its appearance. This is because the trim development is based on only visual sensation. For this reason, the demand for new-design trims with both high-grade appearance and high sound quality is rising. In this study, following three results are shown: (1) comfortable knocking sound index, (2) structure to make pleasant sounds, (3) effect of both appearance and sound improvement.

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