What happens when a wave pulse simultaneously encountered three small barriers?

What happens when a wave pulse simultaneously encountered three small barriers that were placed side by side about 1 cm apart across the width of the bathtub? Plz explain your answer… Thanks~

The pulse would be reflected by the barriers, forming diffraction patterns which become increasingly chaotic with each successive reflection. Some energy would be lost to the barrier. Angle of incidence=angle of reflection and opposite phases cancel; identical phases enhance.