excited by the in class experiments you put two speakers in your living room 80cm apart producing a sound of 750Hz. 4.0 m away you place a microphone right on the centerline between the speakers. Will the microphone detect a loud sound or a soft on at this point (relatively to the space around)?
If it is exactly the same distance from each speaker then there is no difference in path length between the two paths and the signals superimpose to give a maximum.
