The Audio Node Graph is located in the Viewport panel. It displays the audio signal path from left to right, with interconnected nodes representing audio control modules and audio files. The Output node, which has an image of a speaker on it, represents the final output of audio as heard in-game and is always positioned furthest to the right in the signal path. The source audio files (Sound Waves) are always positioned furthest to the left in the signal path. Wires are used to connect the nodes.