A base band signal used in European standard voice grade communication is represented by a band limited CT signal of triangular shape spectrum is sampled at fs=10 kHz. The spectrum of the sampled...

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Extracted text: A base band signal used in European standard voice grade communication is represented by a band limited CT signal of triangular shape spectrum is sampled at fs=10 kHz. The spectrum of the sampled signal shows 2 kHz separation between the original signal spectrum and the next copy. (c) Find the cutoff frequency of the LPF used to recover of the original CT signal from the sampled signal. (d) Find the percentage of change in the sampling frequency from critical sampling.