Home theater soundproofing "is accomplished through specialized, noise-rated components for walls, floors, ceilings & windows," says San Francisco architect David Seidel. People confuse soundproofing & acoustics. Soundproofing refers to all materials & methods that keep rooms isolated. There is nothing inherently 'acoustic' about that. For rooms where homeowners want a pleasant acoustic experience - a lot can be accomplished through strategic placement of rugs, drapes, & plush furniture."