AlteredWindは,視聴覚の刺激と風を組み合わせて風向の知覚を変化させる多感覚提示システムです.
風の感覚によってバーチャルリアリティ(VR)の臨場感・没入感を向上させる「風覚ディスプレイ」が提案されています.しかし,現状の風覚ディスプレイは風向を再現するために多くの風発生源(風源)を必要とします.そこで,風源の少ない風覚ディスプレイを実現するために,クロスモーダル効果によって風知覚を操作する手法を提案します.
AlteredWindでは,粒子が一定方向に流れるVR映像と,立体的な風の音像(聴いて方向がわかる音)を風と同時に提示し,視触覚・聴触覚間のクロスモーダル効果を引き起こします.これにより,2台の固定されたファンだけから様々な風向の風が感じられます.
これらの提示を統合したVRアプリケーションを制作し,SIGGRAPH Asia 2019 Emerging Technologiesで展示しました.
We developed AlteredWind, a multisensory wind display system that manipulates users’ perception of wind by the integration of visual, audio, and wind stimuli.
The wind displays are devices which present the sensation of wind and improve presence and immersion of virtual reality (VR). However, existing wind displays require lots of wind sources to reproduce the wind directions. Therefore we propose a method to manipulate perceived directions of the wind by the cross-modal effect in order to realize wind displays with fewer wind sources.
We present images of flowing particles and three-dimensional (3D) sounds of wind together with the wind to induce the visuo-haptic and audio-haptic cross-modal effect. We produced a VR application in which presentations of the flowing particle, the 3D sounds, and the wind are integrated. The demonstration participants will be able to experience various directions of wind from only two wind sources and realize changes in their perceived directions of the wind.
Kenichi Ito, Yuki Ban, Shin’ichi Warisawa. Alteredwind: Manipulating perceived direction of the wind by cross-modal presentation of visual, audio and wind stimuli. SIGGRAPH Asia 2019 Emerging Technologies (SA ’19). pp. 3–4. Brisbane, QLD, Australia, November 2019. https://doi.org/10.1145/3355049.3360525
山下裕毅. Innovative Tech:2台の扇風機で多様な風向き知覚 東京大学、「AlteredWind」発表.ITmedia.2020年1月.