We developed the noise propagation model using Cellular Automata (CA) method. CA method can catch phenomena microscopically and discretically. And the analysis using CA method can be calculated on local connection from time to time. For this, we catch a change of microscopically phenomena while we can express macroscopically phenomena in view of all the analysis area. T. KOMATSUZAKI et al. have studied the noise propagation analysis using CA method. They have shown that the propagation form of the calculated solutions of CA method is as same as that of the wave equation solutions. However, they haven't concretely compared the solutions of CA method and the another method. Therefore, we study to compare the solutions of CA model with that of the theory, the experiment about the sound phenomenas, and consider their results