Can MPEG-4 give me 3-D Audio spatialization ?
A. Yes. MPEG-4 version 2 provides 3-D sound positioning, modeling of source directivity, propagation of sound in the air, and the room acoustic response. Room acoustic modeling can be done according to two different approaches, namely physical or perceptual. The former relies on physical (geometrical) description of acoustic characteristics of the space, such as, reflectivity of walls or reverberation time within a specified region in the space. In the latter, each sound source is characterized by perceptually relevant parameters (such as source presence, room envelopment and late reverberance) which are used to synthesize a room acoustic response for that source.
