ICS：33.160.25 CCS：M74 世界超高清频产业联盟 中关村视听产业技术创新联盟世界超高清视频产业联盟标准 T/UWA009.1-2023 代替T/UWA009.1-2022 三维声技术规范第1部分：编码、分发与呈现 3DAudioTechnologySpecification:Part1:Coding,Distributionand Presentation 2023-12-31实施 2023-12-31发布 发布 全国团体标准信息平台 全国团体标准信息平台 IT/UWA009.1-2023 目 录 前  言............................................................................III 引  言..............................................................................V 1范围................................................................................1 2规范性引用文件......................................................................1 3术语和定义..........................................................................1 4缩略语..............................................................................3 5约定................................................................................3 5.1概述..............................................................................3 5.2算术运算符........................................................................3 5.3逻辑运算符........................................................................4 5.4关系运算符........................................................................4 5.5位运算符..........................................................................5 5.6赋值..............................................................................5 5.7助记符............................................................................5 5.8数学函数..........................................................................6 5.9位流语法规则......................................................................6 6三维声编解码及渲染框架..............................................................8 7通用全码率音频解码..................................................................9 7.1通则..............................................................................9 7.2位流解复用语法语义及解码过程.....................................................14 7.3区间解码、逆量化和神经网络逆变换语法语义及解码过程...............................18 7.4频谱逆分组处理语法语义及解码过程.................................................22 7.5双声道立体声比特分配和上混语法语义及解码过程.....................................23 7.6多声道比特分配和上混语法语义及解码过程...........................................28 7.7HOA比特分配和上混................................................................30 7.8解码后处理语法语义及解码过程.....................................................34 7.9频带扩展解码语法语义及解码过程...................................................35 7.10逆时域噪声整形语法语义及解码过程................................................42 7.11逆频域噪声整形语法语义及解码过程................................................43 7.12逆MDCT解码过程.................................................................45 7.13HOA空间解码.....................................................................46 8无损音频解码.......................................................................51 9元数据解码.........................................................................51 9.1元数据位流语法语义...............................................................51 9.2静态元数据解码语法语义...........................................................52 全国团体标准信息平台 全国团体标准信息平台 IIT/UWA009.1-2023 9.3动态元数据解码语法语义...........................................................53 9.4基本静态元数据解码语法语义.......................................................53 9.5基本静态元数据节目层解码语法语义.................................................54 9.6基本静态元数据内容层解码语法语义.................................................56 9.7基本静态元数据对象层解码语法语义.................................................57 9.8基本静态元数据对话字段解码语法语义...............................................59 9.9基本静态元数据封装层解码语法语义.................................................60 9.10基本静态元数据通道层解码语法语义................................................62 9.11基本静态元数据对象互动字段解码语法语义..........................................63 9.12基本静态元数据扬声器位置解码语法语义............................................65 9.13基本静态元数据响度字段解码语法语义..............................................65 9.14基本静态元数据节目参考屏幕字段解码语法语义......................................67 9.15动态元数据Level1解码语法语义...................................................67 9.16动态元数据Level2解码语法语