effective sound power from cube if there was a sound source that radiates equally in all directions in a cube enclosure, and the cube was completely absorbative, how would you tell how much sound is coming out of a small gap in one of the walls and find the effective sound power of the cube. Attached is a diagram of the room and opening. I think to do this problem i need to find out how much sound is incident upon the gap in the wall. And because the sound radiates away from the source in a spherical pattern, you need to determine what area of the sphere will come into contact with the gap in the wall. Am I on the right track?