system-bus-radio/tunes/README.md

Tune File Format

This file defines the .tune music file format.

Following is a simple example of the beginning parts of the Super Mario Brothers theme song:

100 660
150 0
100 660
300 0
100 660
300 0
100 510

Full specification

1. Simple text file
2. Each line represents a beep or a pause
   1. Column one is a positive integer number of milliseconds
   2. Column two is a positive integer frequency in Hz, or 0 which represents silence
   3. Columns are separated by a space
3. Line ending is unix format
4. File extension is .tune
5. Although not necessarily part of the tune, consider adding a silence at the end so that looped playback sounds good :-)