GY 中华人民共和国 广播电视和网络视听 行业标准 GY/T 404—2024 音频定义模型 Audio definition model （ITU-R BS.2076-2:2019，MOD） 2024 - 08 - 16发布 2024 - 08 - 16实施 国家广播电视总局 发布 GY/T 404—2024 I 目 次 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 ................................ ................................ ............ 1 5 模型概述 ................................ ................................ .......... 2 5.1 模型描述 ................................ ................................ ...... 2 5.2 通用定义 ................................ ................................ ...... 5 6 ADM元素 ................................ ................................ ........... 5 6.1 audioTrackFormat ................................ .............................. 5 6.2 audioStreamFormat ................................ ............................. 6 6.3 audioChannelFormat ................................ ............................ 8 6.4 audioBlockFormat ................................ .............................. 9 6.5 audioPackFormat ................................ .............................. 18 6.6 audioObject ................................ ................................ .. 22 6.7 audioContent ................................ ................................ . 29 6.8 audioProgramme ................................ ............................... 32 6.9 audioTrackUID ................................ ................................ 36 6.10 audioFormatExtended ................................ ......................... 37 6.11 时间参数格式 ................................ ................................ 38 6.12 示例 ................................ ................................ ........ 39 7 ID的使用 ................................ ................................ ......... 39 8 <chna>块 ................................ ................................ ......... 40 9 坐标系 ................................ ................................ ........... 41 10 所有typeDefinition 的通用参数说明 ................................ ............... 43 10.1 概述 ................................ ................................ ........ 43 10.2 gain ................................ ................................ ........ 43 10.3 importance ................................ ................................ .. 43 10.4 headLocked ................................ ................................ .. 44 10.5 headphoneVirtualise ................................ ......................... 44 11 “Objects” typeDefinition 定义的参数说明 ................................ ........ 44 11.1 diffuse ................................ ................................ ..... 44 GY/T 404—2024 II 11.2 channelLock ................................ ................................ . 45 11.3 jumpPosition 和interpolationLength ................................ .......... 45 11.4 zoneExclusion ................................ ............................... 47 11.5 objectDivergence ................................ ............................ 47 11.6 screenRef 和audioProgrammeReferenceScreen ................................ ... 47 12 “HOA”typeDefinition 的参数说明 ................................ ................... 48 12.1 阶数与度数 ................................ ................................ .. 48 12.2 归一化 ................................ ................................ ...... 49 12.3 nfcRefDist ................................ ................................ .. 50 12.4 screen