Introduction
Hopefully at this point you've been reading my other tutorials and are getting a good grasp on how the sound system works for the GBAFE games. If you haven't read them already, and don't know anything about the topics:
Sappy Graphical User Interface (GUI) Explained
Basic Voice Table Editing in Sappy
Sample Sound Format Explained
In this tutorial I'll teach you how to insert custom samples into your ROM. There are two main methods to this. One uses Sappy exclusively, and the other involves the use of several different programs, namely:
Viena SoundFont Editor
VGMTrans
GBA Mus Riper
Wavosaur
this Frequency Calculator tool
Full credit for this goes to gogojjtech, whose tutorial taught me an insane amount about this topic. I'm basically rewriting his tutorial.
What can you do with custom samples? So much. You can make custom sound effects and a much greater depth of custom music. It's... kind of empowering to be able to do that. So let's get started.
4/9/17: Photobucket is holding all my images hostage so please bear with me while I find a more permanent image hoster.