Investigations on test methodologies for immersive audio systems
The present document aims to:
1) Identify a minimum set of relevant perceptual audio quality attributes (e.g. timbre, localization, overall quality, etc.) for the assessment of immersive audio systems relevant to 3GPP.
2) Identify available test methodologies for the perceptual audio quality attributes of interest and their applicability in the context of immersive audio systems relevant to 3GPP.
3) Document subjective and objective test methodologies for assessing the capturing, coding, transmission and rendering blocks of immersive audio systems.
4) Document the diverse considerations for the testing of immersive audio systems such as:
a) Impacts of audio rendering systems
b) Impacts of Head Related Transfer Functions (HRTFs)
c) Impacts of simultaneous video presentation to the perceived audio quality / psychophysical response
d) Use of naïve and/or experienced listeners
e) Appropriate statistical methods for data analysis and reporting
f) Repeatability and reproducibility