A real-time stereo audio spectrum analyzer that displays frequency content on a 16×16 LED matrix using dual MSGEQ7 ICs and Arduino. The visualizer processes stereo audio through two MSGEQ7 graphic ...

Here I present you a 32 Band LED Audio Spectrum Analyzer made with a Arduino Nano and a MAX 7219 4x LED Dot matrix panel. 4 patterns were included and you can cycle through those with the push button.