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ECG signal input to simulink.

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Fatema Dalal
Fatema Dalal on 16 Mar 2021
Commented: Fatema Dalal on 8 Apr 2021
How to perform dwt on ECG signal in simulink? I have loaded the .mat file from physionet into my matlab workapsce and tried loading that in simulink mdel but that doesn't work. I also tried loading data from a text document and then giving it as input in simulink model. Still it doesn't work.
I have referred mathwork documentation regarding loading data from workspace into simulink and tried everything but nothing seems to work. ANyone who has worked on this kindly help me with the exact process.
Thanks in advance!

Answers (1)

Pavan Guntha
Pavan Guntha on 26 Mar 2021
You can use from workspace block or from file block to load the data present in MATLAB workspace into Simulink. The following block diagram illustrates the flow to compute Discrete Wavelet Transform:
You can refer to the documentation of DWT and dyadic analysis filter bank for more details. The buffer block is required to control the frame rate as required by the DWT based on number of levels. The following plot is the output by setting Filter to Daubechies, Wavelet order as 2 and number of levels as 1 for one of the ECG datasets in PhysioNet.
Fatema Dalal
Fatema Dalal on 8 Apr 2021
Thank you!!
I had another query. In the buffer block as you said output depends on number of levels of DWT. I need to perform 10 level dwt using db6 wavelet, so, for that my buffer output should be 10 right?

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