ABSTRACT
This chapter discusses simple techniques including ways in which volume levels and Doppler shift of sounds can be boosted or cut to provide a theatrical effect. The Doppler pitch shift is a direct representation of the difference in velocity of a sound source from the listener hearing the sound. The chapter explores system that allows for automatic tuning and management of the volumes based on camera and player positions. During gameplay, the volume levels of every sound contributing to the mix are determined, mostly by physics formulae, based on the distance and relative position of the sound and player. The addition of speakers behind the player, as found in the increasingly common surround sound systems, allows movies and games to extend our perception of the space beyond the visual screen that displays the action. Volume emphasis is one way to change the game audio spatialization to deliver an improved gameplay experience. Doppler emphasis can create an increased sense of velocity.
