Audio

• Be aware of the difference between a user listening over fixed, external speakers versus attached headphones; sound source localization will not function correctly over headphones without tracking (Section 2.1).
• Both position and orientation from tracking and avatar locomotion should be taken into account for auralization (Section 11.4).
• The Doppler effect provides a strong motion cue (Section 11.1).
• Geometric models can be greatly simplified for audio in comparison to visual rendering; a spatial resolution of $0.5$ meters is usually sufficient (Section 11.4).