Question

What is the quantity ax(n-1) is called?

(a) Second-order predictor of x(n)

(b) Zero-order predictor of x(n)

(c) First-order predictor of x(n)

(d) Third-order predictor of x(n)

The question was asked in exam.

My question comes from Oversampling A/D Converters in portion Sampling and Reconstruction of Signals of Digital Signal Processing

Answer 1

Correct answer is (c) First-order predictor of x(n)

The explanation: In the equation d(n) = x(n)–ax(n-1), the quantity ax(n-1) is called a First-order predictor of x(n).