Sinusoids are arguably the most important type of signal used in signal processing. In this lesson you will learn why sinusoids play such a prominent role, important differences between continuous- and discrete-time sinusoids, and how sampling relates continuous- and discrete-time frequency. Knowledge of sinusoidal signals will allow you to understand important signal processing concepts such as filtering and Fourier analysis.

This topic is divided into three lessons. The first contains the theory pertaining to sinusoidal signals. The next lesson illustrates use of sinusoids in two applications drawn from music. The third lesson introduces complex-valued sinusoids.

## Prerequisites

## Key Concepts and Screenshots

Concepts and Screenshots for Sinusoidal Signals

## Supplementary Material

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