https://phet.colorado.edu/en/simulations/fourier-making-waves
Description: Fourier: Making Waves is a simulation that allows you to explore how harmonics combine to form a single sound wave.
Artificial Intelligence and Fourier: Making Waves: Fourier: Making Waves is an expert system that applies Fourier's theorem to combine waveforms, both visually and aurally.
Background: The Fourier: Making Waves simulation was created as part of the PhET (Physics Education Technology) Interactive Simulations project at the University of Colorado Boulder. The project aims to provide flexible simulations for students to experience science concepts in an interactive way.