Overview Time to dabble with the infamous FFT in javascript. Starting with a simple script to generate sine waves for testing.

'Double-sided Magnitude spectrum'

Discrete Fourier Transform - Simple Step by Step https://www.youtube.com/watch?v=mkGsMWi_j4Q

Understanding the Discrete Fourier Transform and the FFT https://www.youtube.com/watch?v=QmgJmh2I3Fw&t=3s