bryan
/
BangleApps_old
0
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
BangleApps_old/apps/hrmmar
History
Gordon Williams 10de699459 Add notes about HRM motion artefact removal 2025-06-27 11:40:21 +01:00
..
ChangeLog hrmmar: bthrm compatibility 2023-03-19 08:26:51 +01:00
README.md Add notes about HRM motion artefact removal 2025-06-27 11:40:21 +01:00
app.png
…
boot.js hrmmar: bthrm compatibility 2023-03-19 08:26:51 +01:00
fftelim.js hrmmar: bthrm compatibility 2023-03-19 08:26:51 +01:00
metadata.json Add notes about HRM motion artefact removal 2025-06-27 11:40:21 +01:00
settings.js hrmmar: bthrm compatibility 2023-03-19 08:26:51 +01:00

README.md

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.

WARNING: On Bangle.js 2 this has been found to make heart rate readings substantially less accurate in some cases (the HRM already has built in motion artefact removal).

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.