ISO/IEC 23003-2:2010 信息技术 MPEG音频技术 第2部分：三维空间音频对象编码（SAOC）

标准编号：ISO/IEC 23003-2:2010

中文名称：信息技术 MPEG音频技术 第2部分：三维空间音频对象编码（SAOC）

英文名称：Information technology — MPEG audio technologies — Part 2: Spatial Audio Object Coding (SAOC)

发布日期：2010-10

标准范围

This part of ISO/IEC 23003 specifies the reference model of the Spatial Audio Object Coding (SAOC)technology that is capable of recreating, modifying and rendering a number of audio objects based on asmaller number of transmitted channels and additional parametric data. In the preferred modes of operatingthe SAOC system, the transmitted signal can be either mono or stereo. The audio objects can be representedby a mono and stereo signal or have the MPEG Surround (MPS) Multi-channel Background Object (MBO)format. The additional parametric data exhibits a significantly lower data rate than required for transmitting allobjects individually, making the coding very efficient. At the same time this ensures compatibility of thetransmitted signal with legacy devices.When a multi-channel rendering setup (e.g. a 5.1 loudspeaker setup) is required, the SAOC system acts as atranscoder, converting the additional parametric data to MPS parameters, and interfaces to the MPS decoderthat acts as rendering device. For certain rendering setups (e.g. a binaural or plain stereo setup), the SAOCsystem behaves as a decoder, using its own rendering engine. Another key feature is that the SAOCparametric data from different streams can be merged at parameter level to allow for the combination ofSAOC streams, similar to the functionality of a Multi-point Control Unit (MCU).

标准预览图