The importance of discussing energy and its harvesting from the environment has been one of the major challenges for researchers in recent years. Sound is recognized as one of the natural sources of energy that can be harvested. In this thesis, first ways to harvest acoustic energy are presented. One of them is sonic crystals, so that if the incision is made in regular cylinders by removing one of the cylinders, there will be a concentration of sound pressure at the cavity. This difference in pressure created can vibrate a beam with piezoelectric patch and converts the mechanical energy of it into electrical energy. In this project, in addition to simulating the regular square arrangement with the CAMSOL and computing the accuracy of the simulation, various other configurations such as the rhombic or rectangular grid, the combination of square-rhombic or square-rectangular grids, and the removal of non-center locations are simulated. In each of these configurations, there is a model with concentration of sound pressure and the increase in sound pressure level. In these configurations, the possibility of energy harvesting with PVDF has been investigated. One of the arrangements with the square-rhombus grid had the best result and energy. In this square-rhombic arrangement, a voltage of 11.34 mV at a frequency of 4220.4 Hz and 4.15 nW with 15 k? resistance can be obtained. These values are slightly greater than the results obtained from the regular square arrangement. The optimum cylinder's diameter and filling fraction is also obtained by the Taguchi method. Therefore, it can be concluded that a device design can extract electrical energy from acoustic energy and it can be used in noisy routes for a variety of uses. Keywords: Sound, Acoustic Energy Harvesting, Sonic Crystals, Piezoelectric, Sound Pressure Level