SonART is a toolkit for sonnification research which my friend Bill Farkas has been working on. Neat stuff.
For some examples see remapping sensory data
Here is a quote from a general page about CCRMA (Center for Computer Research in Music and Acoustics – pronounced “karma”) research:
The Sonification Application and Research Toolbox (SonART) is an open-source effort whose core code is platform-independent. The primary objective of SonART is to provide a set of methods to map data to sonification parameters along with a set of graphical user interface tools that will provide practical and intuitive utilities for experimentation and auditory display. SonART provides publicly available, well-documented code that is easily adapted to address a broad range of sonification needs. The effort builds upon the Synthesis ToolKit in C++ (STK) (Cook and Scavone, 1999), both of whose authors are part of this research effort.
Thanks to Matt Patey for pointing out this site.