Sound isolation for an apartment?
How possible or practical is it to construct some sort of sound-isolating vocal booth in an apartment without spending much money? My understanding of acoustics is next to nothing, but it seems like something four foot square and constructed of 2" insulation foam (light weight, easy to stow away) would work fine as long as the interior were lined with egg crate foam or something. Am I way off here, or would this work? It doesn't need to be anything fancy or professional, but it does largely need to keep the sound from going through walls and into the next unit.