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Introduction to Digital Signal Processing by Robert Meddins

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Answers to self-assessment tests and problems

Chapter 1

Section 1.9

As this is a running average filter which averages the current and previous two input samples, then:

image

Applying this equation, and remembering that the two storage registers are initially reset, the corresponding input and output values will be as shown in Table S1.1. The first two output values of 0.67 and 1.67 are not strictly valid as the two zeros, initially stored in the two storage registers, are still feeding through the system.

Table S1.1

image

The input and output values ...

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