sampling a continuous signal.

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Rajan
Rajan 2013-3-6
How to sample an continuous ECG signal, plot from excel sheet data in Matlab. Data is in 2 row and 500 column form.

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回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2013-3-6
Calculate the fft of your signal, then deduce approximately the highest frequency fmax of your signal
The sample frequency should be >= 2*fmax
Walter Roberson
Walter Roberson 2013-3-6
By definition, continuous signals have infinite density, like the "real number line". If you have a finite set of measurements of a signal in an xls file, then you have sampled measurements, not a continuous signal.
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Azzi Abdelmalek
Azzi Abdelmalek 2013-3-6
If the signal is oversampled, we can consider that those samples represent a continuous signal that we should sample again.

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