Waveforms are graphical representations of how a signal varies over time. They illustrate the amplitude (height) of the signal at different points, allowing us to visualize sound, light, or electrical signals. Common types of waveforms include sine waves, square waves, and triangle waves, each with distinct shapes and characteristics. In electronics and audio, waveforms help in analyzing and designing circuits and sound systems. For example, oscilloscopes are tools used to display waveforms, enabling engineers to observe the behavior of electrical signals. Understanding waveforms is essential in fields like music production, telecommunications, and signal processing.