International organisation for standardisation

Source: Jörn Ostermann (Leibniz Universität Hannover)

No.		Title
11096	Vision, Applications and Requirements for High-Performance Video Coding (HVC)
11113	Joint Call for Proposals on Video Compression Technology
11200	Vision, Applications and Requirements for Mobile Visual Search (MVS)
11212	Draft Requirements and Use Cases for the Composite Font Standard
11221	Possible future actions on standardization with Type 1 licensing
11222	Responses to NB position statements on N1066
11223	Draft Requirements for MMT (Modern Media Transport)
11224	Draft Call for Proposals on MMT
11225	Draft Modern Media Transport (MMT) Context and Objectives
11226	Draft use cases for MMT
11227	Vision, Applications and Requirements for Mobile Visual Search (MVS)
11228	Requirements for Advanced IPTV Terminal (AIT)
11229	Advanced IPTV Terminal (AIT): Call for Proposals
11230	Context and Objectives for Advanced IPTV Terminal (AIT)
11231	Use Cases for Advanced IPTV Terminal (AIT)

15MPEG-4 Audio

In a joint meeting with Audio, Video and Requirements, the implications of UHDTV on audio were discussed. UHDTV will have a viewing distance of about 1m resulting in a viewing angle of about 100 degrees (Figure 1). It is assumed that standard audio transmissions like 7.1 multi-channel will not provide sufficient localization of an audio source. Given the screen sizes, left-right as well as top-bottom localization will be required. WP3C developed a preliminary draft for 3D sound with a hierarchy of surround sound systems including 22.2, 12.2, 10.2, 7.1, and 6.1.

As a further requirement, a large sweet spot for the viewers was identified. Possible work areas for MPEG include also the rendering of audio signals with the number of speakers smaller than the number of transmitted channels.

Figure 1 - UHDTV in the living room will have a viewing distance of about 1m which requires a very precise localization of audio sources.