Sounder creates procedural sound effects in real time or ahead of time.
Edit your sound effects directly in the inspector with sliders and comboboxes or from code.
Short sounds can easily take less than a millisecond to build so you can give them a slight variation every time you play the effect.
Sounder also provides a simple Object pool for Audio Sources which you can use to play both Sounder's Effects or any other sounds you want.
Play your sound effects directly, build them to AudioClip, or save them as .wav files.
Try out some of the options Sounder has for creating sounds here: Sounder Demo