Speaking of the Fourier transform, I recommend these visual explorable explanations: https://injuly.in/blog/fourier-series/index.html https://injuly.in/blog/fou

Speaking of the Fourier transform, I recommend these visual explorable explanations: https://injuly.in/blog/fourier-series/index.html https://injuly.in/blog/fourier-series/index.html and https://www.jezzamon.com/fourier/ https://www.jezzamon.com/fourier/