[KongchangAI]
Unverified82% confidenceTradeoffTime unknown

厚度与效果权衡:吸音效果随厚度增加而向低频延伸,25mm聚酯纤维板对500Hz以上有效,50mm可覆盖到250Hz左右;空间紧张只能贴薄板时,可在板材背后留空气层(如10-25mm)来提升低频吸收,等效于增加厚度

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