Sinusoidal Signals Examples

This lesson illustrates sinusoidal signals with two examples drawn from music. In the first example you will see how changing the frequency of sinusoids can generate the notes in a musical scale. The second example previews the important topic of Fourier representations. You will see and hear that as few as eight sinusoids accurately represent the sound produced by a saxophone.

Prerequisites

• Sinusoidal Signals

Key Concepts and Screenshots

Concepts and Slides: Sinusoidal Signals Examples

Supplementary Material

• m-file Sinusoidal Signals Examples
• .mat file containing Saxophone note A

Music Scale

Saxophone Note A

Representation of Saxophone Note A with One Sinusoid

Representation of Saxophone Note A with Two Sinusoids

Representation of Saxophone Note A with Three Sinusoids

Representation of Saxophone Note A with Six Sinusoids

Representation of Saxophone Note A with Eight Sinusoids