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Figure 2-48A.Quantization levels. MODULATION.
Figure 2-51.Pulse-code modulation of a quantized wave (32 bits).

Neets Module 12-Modulation Principles
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2-50 Figure 2-49.—Binary numbers and pulse-code equivalents. Figure 2-50.—Pulse-code modulation of a quantized wave (128 bits). In figure 2-50 the solid curve represents the unquantized values of a modulating sinusoid. The dashed curve is reconstructed from the quantized values taken at the sampling interval and shows a very close agreement with the original curve. Figure 2-51 is identical to figure 2-50 except that the sampling interval is four times as great and the reconstructed curve is not faithful to the original. As previously stated, the sampling rate of a pulsed system must be at least twice the highest modulating frequency to get






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