Data access & tools · Analysis toolkit
ppg-sqi
MATLAB wearable data analysis toolkit
What is ppg-sqi?
ppg-sqi is a MATLAB library that computes signal quality indices for photoplethysmogram signals sampled at 100 Hz, including perfusion, skewness, kurtosis, entropy, relative power, zero-crossing, non-stationarity and matching-systolic SQIs based on definitions in the literature.
ppg-sqi at a glance
- Type
- Analysis toolkit
- Devices supported
- Device-agnostic: computes SQIs for PPG signals sampled at 100 Hz in MATLAB.
- Open source
- Yes
- Signals
- Category
- Signal quality
- Language
- MATLAB
- Licence
- GPL-3.0
- Commercial use
- yes
- Maintenance
- Last commit 1 to 3 years ago (as of Oct 21, 2026)
- Last commit
- Jun 9, 2025
- Repository
- Not archived
Code & repos
Where these facts come from
Checked on Nov 9, 2026 against the project’s own pages:
Related open-source tools
Other Wearable Signal Tools that share a signal with ppg-sqi.
Questions about ppg-sqi
What is ppg-sqi used for?
ppg-sqi is a MATLAB library that computes signal quality indices for photoplethysmogram signals sampled at 100 Hz, including perfusion, skewness, kurtosis, entropy, relative power, zero-crossing, non-stationarity and matching-systolic SQIs based on definitions in the literature. ChatPPG lists it as a analysis toolkit.
Which devices does ppg-sqi support?
Device-agnostic: computes SQIs for PPG signals sampled at 100 Hz in MATLAB.
Is ppg-sqi open source?
Yes. Licence: GPL-3.0.
Is ppg-sqi still maintained?
Its repository's last commit was on Jun 9, 2025 (checked Nov 9, 2026).
Summary, licence and commercial-use fields are shown as recorded for this project. Maintenance is computed from the last commit date. Check the project’s own repository for its current licence and status.