Soundproof a room: acoustic panels or soundproofing foam?

Does Soundproofing Foam Work To Block Noise?

Sound insulation foam panels absorb low, medium and high frequency generated sound, ideal for recording. Sound insulation foam panels absorb low,

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Will putting up some sound absorbing foam or acoustic foam in my room prevent sounds from coming out of my room? - Quora

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Steps for Soundproofing a Home Theatre in 5 Easy steps