Quick sound synthesis without physical modeling in PD
From CCRMA Wiki
This is a quick tutorial on how to make some pleasant but complex sounding tones for use with either impulses or audio rate signals. Impulses are obviously the most simple of the options, and are still great to use for testing the patch, however if you simply want to use a tone as a signal to signify something in a patch or program, the impulse works well. This method works particularly well for unconventional setups, like using a sensor for audio rate input. This works well with that have a high signal voltage with a quick drop off, like a piezo, or even with sensors that have a relatively constant voltage ouput, such as an IR or hall-effect sensor.