Spatially broad sound sources should alter their perceived extent with listener distance

Evidence

Spatial extent of virtual sources. A sound source with a considerable volume, such as a group of talking people, should be perceived as spatially broad when the avatar is near the source, and correspondingly it should be perceived to be spatially narrow when the avatar is far away. If the avatar is inside the group, the subject should perceive the virtual source as surrounding him or her. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 2567

Categorization

• DEFINE: Defines the design requirement of ‘spatial extent’ of a virtual source — a concept central to believable audio VR.