
Chapter 12
Project 3: Peak Program Meter
12.1 Theory
T
HE basic block diagram of the generic DSP system, shown in Figure 12.1, 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 directions.
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 ...