Audio Spectrum with SFML and FFTW
Example of installing FFTW on Ubuntu:
sudo apt update
sudo apt install libfftw3-dev
git clone https://github.com/terroo/audio-visualizer
cd audio-visualizer
g++ main.cpp -lsfml-graphics -lsfml-window -lsfml-system -lsfml-audio -lfftw3
./a.out Music.mp3
Watch the video: https://youtu.be/04c8YR7dhP4