when you are putting acoustic foam in a room for vocal it is a must that you cover every inch or can you spread it around may cover about 80 percent of the room ?
Yes - "Bass trap" more correctly references a tuned trap designed to absorb a specific frequency. Although I'm as guilty as anyone else in calling broadband traps (which absorb a - well, a "broad band" of frequencies) "bass traps."
Ok I will try that first. the main reason I was talkin about the acoustic foam is because the room as one hell of a echo. and I'm planning to sell this house in a couple of years so I didn't wanna go crazy and start ripping out dry wall and putt up this and that. just trying to deaden the room a little bit. but thanx I'm def gonna try that