| Autor: |
Snyder, Oliver, Almasi, Rebeka, Fang, Cathy, Klatzky, Roberta L., Stetten, George |
| Předmět: |
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| Zdroj: |
Computer Methods in Biomechanics & Biomedical Engineering: Imaging & Visualisation; Jul2021, Vol. 9 Issue 4, p400-406, 7p |
| Abstrakt: |
This paper describes the creation and testing of a prototype device for rendering texture, using a touch-sensitive surface consisting of a linear soft potentiometer (LSP) attached to a 3D-printed platform and mounted on the cone of a 5-inch loudspeaker. Displacement of the cone is determined by finger position along the LSP. The roughness quality of rendered textures was evaluated psychophysically: A magnitude-estimation task measured how changes in the amplitude and spatial frequency of the rendered texture translated into perceptual change. A just-noticeable difference (JND) task measured the threshold for detection of change in amplitude or frequency, proportional to a base value. Magnitude estimation demonstrated sensitivity to both variables across the physical scales presented, but with stronger effects for amplitude: A doubling of frequency led to an approximate doubling of reported magnitude, whereas a 60% increase in amplitude led to an 86% increase in magnitude. The amplitude thresholds averaged 24%, whereas the frequency thresholds were substantially higher, averaging 64% but with substantial inter-participant variability. We conclude that the device has promise for conveying a broad range of vibratory effects and hence may simulate textural variations, but additional research is necessary to further its capabilities for differentiating vibrations close in frequency. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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