AES New York 2007 Saturday, October 6, 11:00 am — 1:00 pm
W10 - FROM SAC TO SAOC—RECENT DEVELOPMENTS IN PARAMETRIC CODING OF SPATIAL AUDIO
Jürgen Herre, Fraunhofer IIS - Erlangen, Germany
Jeroen Breebaart, Philips Research - Eindhoven, The Netherlands
Christof Faller, EPFL - Lausanne, Switzerland
Barbara Resch, Coding Technologies - Stockholm, Sweden
One of the most remarkable innovations in low bit rate audio coding during the recent years was the arrival of "Spatial Audio Coding" (SAC) technology. Exploiting the human perception of spatial sound, these coding schemes are capable of transmitting high quality surround sound using bit rates that have been used for carrying traditional two-channel stereo audio so far. Following the recent finalization of the MPEG Surround specification, a next technology generation is envisaged for standardization within ISO/MPEG allowing bit-rate-efficient and backward compatible coding of several sound objects. On the receiving side, such a "Spatial Audio Object Coding" (SAOC) system renders the objects interactively into a sound scene on a reproduction setup of choice. The workshop reviews the principles and current status of spatial audio coding schemes and discusses their evolution toward spatial audio object coding with particular focus on the ongoing ISO/MPEG audio standardization activities in this field. The results of the first round of technology selection within MPEG will be discussed.
Last Updated: 20070914, mei