What is Interference? Wave interference is the phenomenon that occurs when two waves meet while traveling along the same medium. The interference of waves causes the medium to take on a shape that results from the net effect of the two individual waves upon the particles of the medium.

What happens when two waves meet each other?

If two waves meet each other in step, they add together and reinforce each other. They produce a much higher wave, a wave with a greater amplitude .

What happens when two sound waves meet in a region?

When two or more sound waves occupy the same space, they affect one another. The waves do not bounce off of each, but they move through each other. The resulting wave depends on how the waves line up. Two identical sound waves can add constructively or destructively to give different results (diagrams A and B).