The continuous expansion of urbanization and rapid technological progress propel our societies forward, but they also give rise to an escalating concern: environmental noise pollution. This pervasive issue has profound implications for human well-being. Currently, the intensifying need and aspiration for noise control have escalated owing to the expansion of highways, enhancements in existing road networks and traffic volumes, and the proliferation of residential communities and other noise-sensitive developments. A frequently used approach to noise control involves managing the transmission path, which in certain situations may represent the most viable solution. Noise barriers or acoustic enclosures and structural modifications (such as building design alterations) are classified as path-control measures, where the propagation path of noise is either intercepted or absorbed, or a combination of both. Interception involves phenomena like reflection and diffraction, while certain materials also facilitate sound absorption. The chapter focuses on the concept of controlling the transmission path of noise pollution.