Onomatopoeia refers to the quality of a word in which its pronunciation mimics the sound it serves to represent (e.g., meow, crash, zoom). Onomatopoeia is one way that transliterators attempt to convey Auditory Environmental Stimuli.
A great example of a children's story that contains onomatopoeia is Click, Clack, Moo. PBS Kids has several versions of this story, including a cued version, available for download. Access PBS Kids Click, Clack, Moo page.