Ding, dong!
Cough. Excuse me, huff.
In writing, there are often times when we have to use onomatopoeia's in order to give the story some extra oomph! You see, onomatopoeia's (that is a long word) are words that describe a sound like when you sneeze, step on leaves, when you run your nails over a chalkboard (only I have yet to find the word for that sound). It's even possible to write a poem using only these one words to make a scene.
Only, be careful when you use onomatopoeia's as they can be attributed to anyone, so you may want to make sure your readers know who huff -ed and who chuff -ed.