Using a kids keyboard - the lovely casio sa-8 - and a mic (it has no audio out port!) I recorded a few sounds, which I then manipulated with Cubase - any audio editing software should be fine for working with the recordings.
|Audio hardware set up|
For this game I wanted to create some fx with abrasive qualities, by layering up similar but slightly out of time samples you can get some interesting resonance in the sound, which is one of the techniques I went for.
Also saving the files as 40kbps mp3s and then converting them to another lossy audio format (ogg) will hopefully give the fx an interesting digital abrasive nature.
A quick link to an inspiring documentary series about game music - http://www.redbullmusicacademy.com/magazine/diggin-in-the-carts