Audio is a key component of an immersive multimedia experience and 3GPP systems are expected to deliver immersive audio with a high Quality of Experience. However, industry agreed methods to assess the Quality of Experience for immersive audio are relatively few and this Technical Specification seeks to address this gap by providing subjective test methods for the assessment of immersive audio.

The present document specifies subjective test methodologies for 3GPP immersive audio systems including channel-based, object-based, scene-based and hybrids of these formats. The subjective evaluation methods described in the present document are applicable to audio capture, coding, transmission and rendering as indicated in their corresponding clauses.