Chapter 13

Project 4: Peak Program Meter

 

13.1    Theory

THE basic block diagram of the generic DSP system, shown in Figure 13.1, was first introduced in Chapter 2. We also emphasized in Chapter 2 that the analog signal that is digitized by the analog-to-digital converter (ADC) should not exceed the maximum voltage range of the converter. To avoid unintended distortion, be careful to ensure that the ADC is not driven beyond the maximum input voltage range, in either the positive or negative direction.

Even if the input analog signal remains within the proper range of the ADC, it is still possible to distort the signal by exceeding the output range of the digital to analog converter (DAC). As an example, the possible range of values for a ...

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