Unverified50% confidenceDecision RuleTime unknown
隔音关键看隔声量Rw值：普通隔墙Rw需≥45dB才能有效隔绝正常说话声，若要隔绝低频噪音（如低音炮、马路车流）需Rw≥50dB且必须做龙骨+多层结构，单纯贴一层材料无效
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