havent read the article so i dont know whta scale were talking about here.. but a cheap and easy way to sound insulate a wall is double gypsum. just smack up an

havent read the article so i dont know whta scale were talking about here.. but a cheap and easy way to sound insulate a wall is double gypsum. just smack up another gypsum or sheetrock and probably call it a day. one 1mx2m sheet should set you back around $6. either one of these two tenants do it, or both. and oh seal any cracks or open slits with self expanding foam, very important even for temperature insulation.