Hwang Inwook, Seo Jeongil, Choi Seungmoon
Realistic Broadcasting Media Research Department, Electronics and Telecommunications Research Institute (ETRI), Daejeon, Republic of Korea.
Haptics and Virtual Reality Laboratory, Department of Computer Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyungsangbuk-do, Republic of Korea.
PLoS One. 2017 Jan 12;12(1):e0169570. doi: 10.1371/journal.pone.0169570. eCollection 2017.
The use of distinguishable complex vibrations that have multiple spectral components can improve the transfer of information by vibrotactile interfaces. We investigated the qualitative characteristics of dual-frequency vibrations as the simplest complex vibrations compared to single-frequency vibrations. Two psychophysical experiments were conducted to elucidate the perceptual characteristics of these vibrations by measuring the perceptual distances among single-frequency and dual-frequency vibrations. The perceptual distances of dual-frequency vibrations between their two frequency components along their relative intensity ratio were measured in Experiment I. The estimated perceptual spaces for three frequency conditions showed non-linear perceptual differences between the dual-frequency and single-frequency vibrations. A perceptual space was estimated from the measured perceptual distances among ten dual-frequency compositions and five single-frequency vibrations in Experiment II. The effect of the component frequency and the frequency ratio was revealed in the perceptual space. In a percept of dual-frequency vibration, the lower frequency component showed a dominant effect. Additionally, the perceptual difference among single-frequency and dual-frequency vibrations were increased with a low relative difference between two frequencies of a dual-frequency vibration. These results are expected to provide a fundamental understanding about the perception of complex vibrations to enrich the transfer of information using vibrotactile stimuli.
使用具有多个频谱成分的可区分复合振动可以改善通过振动触觉界面进行的信息传递。我们研究了双频振动作为与单频振动相比最简单的复合振动的定性特征。通过测量单频和双频振动之间的感知距离，进行了两个心理物理学实验，以阐明这些振动的感知特征。在实验I中，测量了双频振动在其两个频率成分之间沿相对强度比的感知距离。三种频率条件下估计的感知空间显示出双频和单频振动之间的非线性感知差异。在实验II中，根据测量的十个双频组合和五个单频振动之间的感知距离估计了一个感知空间。在感知空间中揭示了成分频率和频率比的影响。在双频振动的感知中，较低频率成分显示出主导作用。此外，单频和双频振动之间的感知差异随着双频振动的两个频率之间的低相对差异而增加。这些结果有望为复杂振动的感知提供基本理解，以丰富使用振动触觉刺激的信息传递。
