DB43/T 3305—202543 湖 南 省 地 方 标 准ICS 91.140 CCS P 32 发 布 湖南省市场监督管理局2025-07发布-18 2025-10实施-18餐饮、办公、民宿、展厅室内装饰装修 声环境技术规范 Catering, office, homestay , exhibition hall interior decoration and renovation technical regulations for acoustic specificationDB43/T 3305—2025 I 目 次 前言 ································ ································ ································ ························ Ⅲ 1 范围 ································ ································ ································ ····················· 1 2 规范性引用文件 ································ ································ ································ ······ 1 3 术语和定义 ································ ································ ································ ············ 1 4 通用要求 ································ ································ ································ ··············· 3 5 餐饮空间 ································ ································ ································ ··············· 3 5.1 一般要求 ································ ································ ································ ········· 3 5.2 混响时间 ································ ································ ································ ········· 3 5.3 背景噪声限值 ································ ································ ································ ··· 5 5.4 隔声标准 ································ ································ ································ ········· 5 5.5 降噪设计 ································ ································ ································ ········· 6 6 办公空间 ································ ································ ································ ··············· 6 6.1 一般要求 ································ ································ ································ ········· 6 6.2 混响时间 ································ ································ ································ ········· 7 6.3 背景噪声限值 ································ ································ ································ ··· 8 6.4 隔声标准 ································ ································ ································ ········· 8 6.5 降噪设计 ································ ································ ································ ········· 9 7 民宿空间 ································ ································ ································ ············· 10 7.1 一般要求 ································ ································ ································ ······· 10 7.2 混响时间 ································ ································ ································ ······· 10 7.3 背景噪声限值 ································ ································ ································ · 11 7.4 隔声标准 ································ ································ ································ ······· 11 7.5 降噪设计 ································ ································ ································ ······· 12 8 展厅空间 ································ ································ ································ ············· 12 8.1 一般要求 ································ ································ ································ ······· 12 8.2 混响时间 ································ ································ ································ ······· 12 8.3 背景噪声限值 ································ ································ ································ · 14 8.4 隔声标准 ································ ································ ································ ······· 14 8.5 降噪设计 ································ ································ ································ ······· 15 9 声学材料性能要求 ································ ································ ································ ·