Article
Quality Testing for AR and VR in MPEG-I Immersive Audio (de)
* Presenting author
Abstract:
Traditionally, quality assessment of high-quality audio coding schemes is based on listening tests comparing the output of a system with its input. This input is named open reference. In AR and VR systems acoustic scenes are often not recorded but produced: They only exist as a scene description, and therefore no reference sound exists. MPEG Audio currently works on coding and rendering of 6DoF audio. In the cause of the call for proposals (CfP) for MPEG-I immersive audio it was necessary to select or develop a test method which is adequate to select the core technology for the upcoming standard. In MPEG-I immersive the acoustic properties are stored as metadata independently from the audio essence. For AR acoustical properties of the reproduction room are an additional input to the renderer enabling the adaptation of the rendered acoustic scene to the real room. This paper describes the requirements, some already standardized test methods, and the way towards three candidate methods. From these methods one was selected for the CfP, but the other two are foreseen to be used during the core experiment phase (improving the core technology by adding or replacing components) and the final verification test.