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BangleApps/apps/hrmmar/README.md

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HRM Motion Artifacts removal

Measurements from the build in PPG-Sensor (Photoplethysmograph) is sensitive to motion and can be corrupted with Motion Artifacts (MA). This module allows to remove these.

Settings

  • MA removal

Select the algorithm to Remove Motion artifacts:

  • None: No Motion Artifact removal.
  • fft elim: (default, experimental) Remove Motion Artifacts by cutting out the frequencies from the HRM frequency spectrum that are noisy in acceleration spectrum. Under motion this can report a heart rate that is closer to the real one but will fail if motion frequency and heart rate overlap.