For anyone wanted an intuitive understanding of Fourier transforms I recommend "Who Is Fourier?: A Mathematical Adventure". It seems a bit childish, but it act

For anyone wanted an intuitive understanding of Fourier transforms I recommend "Who Is Fourier?: A Mathematical Adventure". It seems a bit childish, but it actually explains everything perfectly. https://www.goodreads.com/en/book/show/706622 https://www.goodreads.com/en/book/show/706622