Table 2. Median values and i-percentiles, Pi, of the unsigned error in the estimation of the compression depth with respect to the different target compression rates.
LF: linear filtering; ZCV: zero-crossing velocity; SA: spectral analysis.
| Unsigned error (mm) | ||||||
|---|---|---|---|---|---|---|
| rate (cpm) | Median | P25 | P75 | P90 | P95 | |
| LF | 80 | 2.9 | 1.4 | 4.9 | 7.4 | 9.3 |
| 100 | 3.9 | 2.0 | 6.3 | 9.9 | 12.8 | |
| 120 | 3.3 | 1.7 | 5.5 | 8.4 | 11.0 | |
| 140 | 2.6 | 1.1 | 4.9 | 8.0 | 11.1 | |
| ZCV | 80 | 5.8 | 3.9 | 8.2 | 12.1 | 16.0 |
| 100 | 3.9 | 2.3 | 6.0 | 9.6 | 13.1 | |
| 120 | 2.6 | 1.3 | 4.5 | 7.7 | 10.4 | |
| 140 | 2.1 | 0.9 | 4.6 | 8.7 | 12.2 | |
| SA | 80 | 1.6 | 0.8 | 3.0 | 5.5 | 7.3 |
| 100 | 1.1 | 0.5 | 2.1 | 4.0 | 6.0 | |
| 120 | 1.1 | 0.5 | 1.8 | 2.8 | 3.8 | |
| 140 | 1.5 | 0.7 | 2.4 | 3.8 | 5.7 | |