Which Is Better for Soundproofing: Massive Blocks or Open Blocks?

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taregg
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what is good for proof sound

massive block or open block. ..and why
 
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taregg said:
massive block or open block. ..and why

You mean what bricks are better for a soundproof wall, hollow or solid?
 
Two walls (with mass) separated by an air gap is probably better than either.
 

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