How can I plot an ECG from a sound signal?

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I had a task to plot an ECG (Electrocardiogram) from a sound signal from a .wav file, Is there any function to change a sound signal to ECG?
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Muhammad Afiff Rizki
Muhammad Afiff Rizki on 26 May 2019
Thank you for your respond.
The signal that I'm converting is a sound of my recording. I was told by my lecture that the syllables of the sound that I make can be represented in ECG. For examle by saying 'Pen-cil' (with a pause between the two syllabbles) can be plotted with two seperate jumps.
Star Strider
Star Strider on 26 May 2019
I have no idea how that could possibly relate to an electrocardiogram!

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