Advances in diffusive surface design using 3D architectural parametric modeling programs

Diffusive surfaces need to be optimally designed for both acoustic performance and aesthetic values. These aspects are at the heart of the design workflow and should respond to the requirements of both architects and acousticians. Advances in parametric modelling through digital tools have led to the integration of performance investigations and architectural design process. Moreover, parametric modeling software are also useful tools for manufacturing. Indeed, they can reduce the production time as they can easily be integrated inside the manufacturing process. Although, it is more than a decade that the standard ISO 17497:2004 has proposed the scattering and diffusion coefficients measurements, further work is needed in order to increase designers’ awareness on diffusive surface design through simple design rules and approaches. This research goes through three steps. First, it investigates the diffusive surface properties databases in order to extrapolate basic geometric guidelines for diffusive surface optimization. Second, it analyses a series of case-studies that apply the parametric modeling to the design of diffusive surfaces. Finally, it suggests a design process for diffusive surfaces by integrating parametric models and acoustic simulation aiming to provide architects and designers with rapid visual and acoustic feedback at a preliminary stage of their design.