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

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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?
 
Yes. ...
 
Two walls (with mass) separated by an air gap is probably better than either.
 
This has been discussed many times on PF, and will likely come up again, so the video might come handy. Previous threads: https://www.physicsforums.com/threads/is-a-treadmill-incline-just-a-marketing-gimmick.937725/ https://www.physicsforums.com/threads/work-done-running-on-an-inclined-treadmill.927825/ https://www.physicsforums.com/threads/how-do-we-calculate-the-energy-we-used-to-do-something.1052162/
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