In DSP, what does "time-domain analysis" involve?

A) Analyzing the signal's frequency content

B) Analyzing how a signal changes over time

C) Converting signals to the analog domain

D) Filtering signals

Answer: B) Analyzing how a signal changes over time

Explanation: Time-domain analysis focuses on how a signal behaves with respect to time. It examines characteristics such as amplitude, duration, and waveform shape, as opposed to analyzing frequency content.