Music-Visualizer-Reboot

• Terminal-based Music Visualizer that displays the power spectrum of a .wav file
• Music visualizer using SDL2 for audio play and FFTW for Fourier Transformation

Video Demonstration: https://www.youtube.com/watch?v=YaeXZrTrX-Y&t=790s

Motivation

• Was planning to design and build a LED music visualizer as an Arduino project but wanted a better understanding of how music visualization software actually works.

Video Demonstration for LED music visualizer: https://www.youtube.com/watch?v=___XwMbhV4k

Software

• SDL2: https://wiki.libsdl.org/Installation
  • Note: make sure to install sdl2, alsa, and pulseaudio development (or any development files that your systems uses to play sound ) files before installing SDL2.
• FFTW: http://www.fftw.org/download.html
• pkg-config: https://www.freedesktop.org/wiki/Software/pkg-config/
• GDB: for debugging on Linux
• gcc: C compiler for Linux

How To Build and Run

From terminal:

git clone https://github.com/Crelloc/Music-Visualizer-Reboot.git && cd Music-Visualizer-Reboot && make

Synopsis:

./visual.exe [-f] /PATH/TO/WAV/AUDIO/FILE

For example:
./visual.exe -f ~/Music/Classic.wav

Note: Supports only wav audio files and make sure that the "/PATH/TO/WAV/AUDIO/FILE" doesn't have spaces in it.

Brief overview about how the program works

• Analyzes the digital information in the wav file.
• Computes the fourier transformation every 'N' frames. Eg. computes the fourier transformation (FT) on 'N' L channel data and also computes the FT on 'N' R channel data.
• Gathers frequency and magnitude information from the results of the fourier transformation and records it by storing into an array.
• After analysis is finished the program will play music and display the corresponding information at the terminal.