While working on his project, Veli also came across the problem mentioned above. To find the best 3D audio spatializer, he conducted an empirical online test in which he asked the following question: “In terms of perceived directional precision, what is the most highly rated audio spatializer-plugin, and how much can its usage increase immersion when compared to non-spatialized audio?”
He started his research by searching for alternatives to the default built-in Unity plugin by Oculus. Other determining factors included: a focus on direct and easy availability, proper customer support and frequent updates. Finally, he put together a list of six different companies to compare their products within his empirical investigation.
His list consisted of the following companies and products:
- Oculus (Unity Default)
- Resonance (Google)
- Steam audio (Valve Corporation)
- Realspace 3D audio (Visisonics)
- VR Audio Kit (3d Sound Labs)
To gather as much data as possible, Veli chose an online test in which he asked the participants to listen to each different audio spatializer plugin using their headphones as well as to evaluate the perceived directional precision. He divided the test into two experiments in which every participant used the same audio material.