This study investigates the impact of dimple designs, specifically rounded and hexagonal shapes, on acoustic performance. Experiments were carried out at a specific jet velocity of 30 m per second to evaluate their effects on sound spectra and power levels. The results show that hexagonal dimples produce higher sound spectra levels than rounded ones, indicating that their geometric design enhances turbulence and airflow disruption. Similarly, hexagonal dimples exhibit higher sound power levels, highlighting their significant role in noise generation. The increased acoustic levels from hexagonal dimples can be attributed to their ability to create localized flow disturbances and vortices. While this design may benefit applications requiring enhanced mixing or heat transfer, it presents challenges in noise-sensitive environments. These findings emphasize the importance of dimple geometry in applications like aerospace and automotive systems. Future research could focus on optimizing hexagonal designs to balance performance benefits with reduced noise emissions.