In this section, we are going to introduce the concept of 3D sound and show how this is implemented at the basic level within Unity. Since the introduction of virtual reality, there has been other implementations of 3D or spatial sound, which Unity can support through plugins, but that is outside the scope of this section. Either way, perhaps it is best to start with a definition of 2D and 3D sound using the following diagram:
In Unity, the basic simulation of 3D sound is achieved by reducing the audio to a single channel ...