The document describes how various audio effects were used to manipulate sounds and create different impressions for the listener. Effects like panning, reducing volume, and reverb were used to make barks seem like they were coming from the right, make thunder sound distant from inside a building, and make footsteps echo as if in a vast empty space. Different sounds were also merged to create a continuous thunderstorm with variety. Panning was used to make a fuse sound like it moved from right to left past the listener.