[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

聚酯纤维吸音板NRC值通常在0.15-0.40(9mm厚度),对中高频有效但对低频几乎无用;真正提升隔声量需要'质量定律'——墙体越重隔声越好,单纯贴几毫米吸音板对隔绝低频噪音(如脚步声、装修声)作用极小

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