- 學位論文
次聲波之體感設計
InfraVibe: Designing Haptic Experiences Using Infrasonic Waves
摘要
提供觸覺體感以增進沉浸感已成為現今沉浸式體驗中主要研究方向之一。在提供觸覺體感的方法中，震動是最被廣泛利用的方法之一，例如在手機裝置、電動搖桿和 4D 電影院。為了增進震動之表現力和可移動性，諸多研究致力於以非接觸式裝置提供震動體感；然而，目前的非接觸式裝置所能提供的體感範圍仍然有限。 本篇研究方向為以非接觸式裝置提供能擴及全身的震動體感。此研究主題發展起源於在演唱會中，重低音對人體所能提供的震動回饋。為了進一步避免觸覺與聽覺體驗設計交互干涉，我們瞄準了人耳聽覺範圍不及之次聲波作為提供聲感震動的來源。 在本篇論文研究中，我們製造了一台扇葉式超低音揚聲器以產生次聲波，設計一系列的實驗驗證裝置的可靠度和測量頻率響應，並對於硬體設備進行詳細說明。為了探索次聲波可提供的體感，我們進行前導實驗，對使用者測試各種次聲波波形，並記錄他們所描述的體感。最後，我們將次聲波融入沉浸式體驗，邀請 13 位使用者進行體驗。我們的實驗結果顯示次聲波能夠製造增進沉浸感的全身性震動回饋，與一般震動馬達所能提供的單點震動回饋不同。
並列摘要
Providing haptic feedback has been a main research focus for enhancing immersion in immersive experiences. One common approach that has been widely adopted in mobile phones, game controllers and 4D theaters is through vibration. Recent research has delved into providing vibrotactile sensations contactlessly to increase expressiveness and mobility. However, the effective areas of these contactless vibrotactile sensations are still limited. In this thesis, we look into providing contactless vibrotactile sensations at a full-body scale. This topic was inspired by audio-induced vibration that is commonly experienced in concert venues. In particular, we focus on using inaudible infrasound to achieve contactless full-body vibration. We built a replica of the rotary subwoofer and conducted experiments to measure its frequency response for infrasonic waves. The components and system set-up of the device are also presented. A pilot study is conducted to explore haptic sensations and physical effects produced by infrasound with a collection of audio signals and waveforms. We recruited 13 participants to evaluate the haptic sensations generated by our system in comparison to an off-the-shelf vibration motor in an immersive experience. Results show that haptic sensations created by infrasound have a positive effect on immersion and are at a full-body scale rather than a localized sensation.