Time-Domain Signal

A time-domain signal represents how a quantity changes over time. In simple terms, it captures variations in a signal, such as sound or electrical voltage, at specific moments. Imagine a sound wave: it fluctuates as it travels, and these fluctuations can be recorded as a graph with time on the x-axis and the signal’s amplitude on the y-axis. This visual representation allows us to analyze and understand the behavior of the signal, including its frequency and duration, helping in fields like audio processing, telecommunications, and various engineering applications.