The difference between sound absorption and sound insulation is that one blocks noise while the other reduces reverberation. Sound insulation blocks noise from entering or escaping a space. Sound absorption prevents sound from amplifying through reverberation in cavity spaces.

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Intro: 0:00
Meaning of insulation: 15:00
Sound insulation: 0:30
Acoustic insulation: 0:52
Is standard insulation acoustic? - 1:10
The drum effect: 1:20
Recap: 1:48

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