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Question F2.3: Consider the audio signal represented by the graph in Figure...

Consider the audio signal represented by the graph in Figure F2.1 above. Sample this signal with a frequency of 2.0 kHz (i.e. 2000 times per second), and plot a graph of the resulting reconstructed signal along a time axis. Compare the result with that obtained above when sampling at 400 Hz.

F.2
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The result of the sampling and the reconstructed analogue signal are shown in Figures F2.4 and F2.5.

The sampling frequency here is very high (the Shannon-Nyquist sampling theorem is more than satisfied), and as a result we have a very faithful reproduction of the original signal, unlike in the case of sampling at 400 Hz.

4.5

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