Finding Decent Equipment and Environments Although you won’t be adding ambient sounds like footsteps, crashes, and background noise until after animation is finished, you need to have any dialogue recorded before you begin. Although those other types of sounds are fairly easy to synchronize to your animation, the reverse is true for the spoken word. The viewer will easily discern any variance from the rhythms of natural speech, so you are constrained to using speech in a mostly unaltered format. It is much simpler, then, to animate to already recorded dialogue than to try to have your voice actors match what they say to characters whose mouth movements and facial expressions were done without guidelines. In fact, doing the latter would be nearly impossible!