King's College London
3 files

BSSLAB Localized ECG Data

posted on 2023-02-03, 16:53 authored by Ernest KamavuakoErnest Kamavuako, Xinqi BaoXinqi Bao


Localized ECG at PCG Auscultation Sites including Respiration Data description:

All the data were saved in ‘.mat’ format, and the sampling frequency was 20kHz.

There are 12 folders including 12 subjects’ data. In each folder, there are 4 .mat files, named as 2-A, 1-AM, 1-AP, and 1-AT. ‘2’ and ‘1’ means experimental stage I and stage II. ‘A’, ‘P’, ‘T’, and ‘M’ means the measured auscultation sites. ‘AM’ means both two sites PCG and ECG were measured synchronously.

Experimental setting:

In stage I, three gel electrodes were positioned over the chest of a subject with standard Lead I as reference. The embroidered electrodes were placed next to the gel ones with Lead I as well. The other two simultaneous ECG were recorded with 10 cm inter-electrode distance (IED) at each auscultation site. Two electronic stethoscopes were put at the centre of the electrodes (auscultation points). The recording duration was 3 mins. In the meantime, a microphone was placed under the subjects’ nose to record the actual respiration as a reference.

In stage II, three groups of disposable adhesive ECG sensors were placed at A site with 5 cm, 10 cm, and 15 cm IED. The recording duration was also 3 mins. 

More details and block diagrams can be found in [1, 2, 3].

Channel description:

Stage I channels:

1: time

2: Heart Sound at site A

3: Heart Sound at site M, P, or T 

4: Respiratory Signal (raw)

5: ECG Reference (Lead I) 

6: ECG embroidered

7: ECG at A

8: ECG at M, P, or T.

9. Respiratory Signal (filtered)

Stage II channels:

1: time

2. Null

3. Null

4. Respiratory Signal (raw)

5. ECG 5 cm 

6. Null

7. ECG 10 cm

8. ECG 15 cm

9. Respiratory Signal (filtered)


Bao, X., Deng, Y., Gall, N. and Kamavuako, E.N., 2020, February. Analysis of ECG and PCG Time Delay around Auscultation Sites. In BIOSIGNALS (pp. 206-213).

Bao, X., Howard, M., Niazi, I.K. and Kamavuako, E.N., 2020, July. Comparison between embroidered and gel electrodes on ECG-derived respiration rate. In 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC) (pp. 2622-2625). IEEE.

Bao, X., Abdala, A.K. and Kamavuako, E.N., 2020. Estimation of the Respiratory Rate from Localised ECG at Different Auscultation Sites. Sensors, 21(1), p.78.


King’s China Scholarship Council


Data collection from date


Data collection to date


Collection method

Data were collected in the BioSignals and Sensors

Copyright owner

Faculty of Natural, mathematical and Engineering Sciences

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