Add spatial audio to your unity project
Spatial audio
Spatial audio describes a variety of sound playback technologies that make it possible to perceive sound all around you without the need for any specific multiple speaker setup. For an understanding of what it means to spatialize sounds and recommendations for when it can be helpful, see spatial sound design.
HRTF offload
Processing audio using HRTF-based algorithms requires a large amount of specialized computation. HoloLens 2 includes dedicated hardware it can use to avoid burdening the application processor, thus "offloading" the HRTF-based algorithm processing. The Microsoft spatializer plugin provides an easy way for your application to take advantage of the dedicated HRTF hardware so your application can use more of the application processor for operations other than spatial audio.
Microsoft spatializer
Spatial sound on the HoloLens is enabled using an audio spatializer plugin. We recommend using the Microsoft Spatializer plugin, which you can add via the Mixed Reality Feature Tool.