Question

In DM, the quantizer is a simple ________ bit and  ______ level quantizer.

(a) 2-bit, one-level

(b) 1-bit, two-level

(c) 2-bit, two level

(d) 1-bit, one level

This question was addressed to me in unit test.

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

Answer 1

Correct option is (b) 1-bit, two-level

Explanation: The simplest form of differential predictive quantization is called delta modulation (DM). In DM, the quantizer is a simple 1-bit (two-level) quantizer.