A tiny tool to display the volume (loudness) curve of an .mp3 music file and count the number of volume peaks in it. Written in four different languages just for fun (C99, Rust, Go, Python).

Available on Linux or OS X platforms.

First, clone this git repo:

$ git clone [email protected]:josehu07/volume-peak-counter.git
$ cd volume-peak-counter/

Then, prepare the prerequisites:

1. loudness-scanner is a git submodule by jiixyj (repo) and should be pulled automatically. Follow its installation guide to build a loudness binary at loudness-scaner/build/loudness. Please make sure one of its input plugins is working.
2. gnuplot_i is a gnuplot C interface by Devillard (page). This projects contains a slightly modified version of gnuplot_i which adds an options argument to gnuplot_plot_xy. No pre-building is required.

Finally, build the counter by:

$ make counter-[c|rs|go|py]   # Choose whatever language version you prefer.

Run from command line:

$ ./counter MP3_FILENAME

This tool is licensed under the GNU GPL license. See COPYING file for details.