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Table 2 Differences in displacements estimated by the two types of methods at representative frequencies. DT indicates the differential threshold of human vibrotactile perception

From: Wearable finger pad deformation sensor for tactile textures in frequency domain by using accelerometer on finger side

Frequency (Hz) 10 30 100 450
Difference (μm) 4.3 0.60 2.2 × 10−2 8.7 × 10−4
DT (10%) (μm) 0.68 0.49 7.0 × 10−2 4.3 × 10−2
DT (20%) (μm) 1.4 0.98 1.4 × 10−1 8.6 × 10−2