If 2 sounds of similar freq are emited from the same source you get beats, but what happens if two sounds of similar freq are emited from separate sources. I realise that its just superposition but i can't figure out what it would be like in the space between the two sources. Im happy to initially assume that the 2 amplitude are the same and only consider the 2d plane between the two sources. Is this easy to solve? Is this problem best considerd in vector fields? if so then how?