This blog finalises everything about sound production by talking about the stages of sound during the Post-Production stage.
Synchronizing everything up with footage and sound needs to be checked over again. The animator would animate the lip synch using the dope sheet, but now it needs precision. This is a role called the Dialogue Editor, who matches up sound with footage more cleanly. They will check to see if the dialogue matches the mouth synch according to script and dope sheet, and will then proceed into finalising and will then pass the synced voice to the Sound FX team.
Before this, the Foley artists are needed to help create more feel to an animation by recording footsteps, background noises or specially created sounds from common objects (e.g. in Pixar's Wall-E, a spring with a wooden stick tapped against it helped create Eva's laser blaster).
Musical score is added as well to the finished animations, giving them more depth. When the music is chosen (and the owners allow the rights to the animation company to use their songs), or recorded by a live band, it will then be synced up to movement for either background music or again, Foley.
Sound is very important to help add emotion to an animation. It can make audiences laugh, cry or fear whatever is about to happen on screen.
Finally, the last stage of this is to mix everything up into the Final Mix, adding in all edited voices, music and foley which will then have effects added to them, so adding echoes or high pass filters (creating a radio sort of feel to a sound). The Final Mix team will also equalize sounds, (e.g.making sure none are too loud or too quiet), keeping the flow of animation going.