Question

The FIR filter whose direct form structure is as shown below is a prediction error filter.

(a) True

(b) False

This question was posed to me in my homework.

This intriguing question comes from Structures for FIR Systems topic in division Discrete Time Systems Implementation of Digital Signal Processing

Answer 1

Right choice is (a) True

Easiest explanation: The FIR structure shown in the above figure is intimately related with the topic of linear prediction. Thus the top filter structure shown in the above figure is called a prediction error filter.