Granular synthesis can be used to stretch a wave without altering its pitch or create interesting and complex audio effects. The length and spacing of the grains can also be altered to achieve different tonal effects. Granular synthesis splits a wave sample into many small pieces (grains) that are looped/played-back according to the settings of the generator.
The source material for the Granulizer is a wave sample loaded by the user. Fruity Granulizer is a sample based plugin that utilizes the granular synthesis.