What are the acoustic properties of marble outdoor tree boxes in urban plazas?

Marble outdoor tree boxes in urban plazas exhibit unique acoustic properties that influence soundscapes in public spaces. As a dense, non-porous material, marble primarily reflects sound waves rather than absorbing them, contributing to reverberation effects in open areas. The hard surfaces of marble tree boxes can amplify high-frequency sounds, while low-frequency noises may diffuse around their solid structures. When strategically placed, these tree boxes can act as subtle sound barriers, redirecting traffic or crowd noise. However, their acoustic impact varies based on plaza size, surrounding materials, and tree foliage density. Understanding these properties helps urban designers balance aesthetics with functional sound management in public environments.