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Peak horizontal acceleration error between smartphone and reference accelerometers.
| Frequency (Hz) | 0.5 | 0.8 | 1 | 2 | 5 | 10 | 20 | ||
|---|---|---|---|---|---|---|---|---|---|
| Error (%) | Smartphone 1 | 4.57 | 4.58 | 5.04 | 5.03 | 4.73 | 4.96 | 4.01 | |
| Smartphone 2 | 0.92 | 0.95 | 0.92 | 0.92 | 0.95 | 0.92 | 0.96 | ||
|
| |||||||||
| Amplitude (g) | 0.04 | 0.08 | 0.11 | 0.17 | 0.18 | 0.25 | 0.29 | ||
|
| |||||||||
| Error (%) | Smartphone 1 | 43.9 | 25.6 | 17.5 | 8.19 | 15.3 | 17.3 | 25.7 | |
| Smartphone 2 | 17.4 | 8.51 | 3.10 | 4.97 | 1.14 | 0.45 | 3.82 | ||
