Key result
A two-dimensional active noise cancellation algorithm using an NLMS adaptive filter reduced PPG signal distortion rates from 52.34% to 3.53% during simulated daily motions.
Comparison
Two-dimensional active noise cancellation… vs Uncompensated distorted PPG signals
Design
Other
Authors
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May enhance ambulatory PPG monitoring; leaves open prospective clinical validation before practice change.
Absolute Event Rate: 3.53% vs 52.34%
A novel motion artifact reduction algorithm significantly reduced PPG signal distortion during simulated daily motions, enabling more reliable continuous heart rate monitoring.
Han et al. (2007) studied this question. Two-dimensional active noise cancellation algorithm (NLMS adaptive filter) vs. Uncompensated signals was evaluated on Signal distortion rate at frequencies between 1 and 2.5 Hz. A two-dimensional active noise cancellation algorithm using an NLMS adaptive filter reduced PPG signal distortion rates from 52.34% to 3.53% during simulated daily motions.
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