Table 1 SNR improvement of 6 representative segments of noise in the recording from the subject 1 and 2, when various number of IMU channel data were used to remove the artefacts
From: Movement artefact removal from NIRS signal using multi-channel IMU data
Subjects | Accel. | Accel. + Gyro. | Accel. + Gyro. + Magn. | |||
|---|---|---|---|---|---|---|
SNR (dB) | Correlation | SNR (dB) | Correlation | SNR (dB) | Correlation | |
Sub 1 Seg 1 | 7.92 | 0.79 | 11.33 | 0.82 | 14.77 | 0.83 |
Sub 1 Seg 2 | 8.93 | 0.89 | 12.66 | 0.92 | 15.11 | 0.93 |
Sub 1 Seg 3 | 5.31 | 0.94 | 13.92 | 0.96 | 13.92 | 0.96 |
Sub 2 Seg 1 | 7.35 | 0.96 | 13.44 | 0.97 | 19.08 | 0.97 |
Sub 2 Seg 2 | 3.04 | 0.77 | 5.29 | 0.78 | 11.95 | 0.98 |
Sub 2 Seg 3 | 11.56 | 0.94 | 14.31 | 0.95 | 17.46 | 0.95 |