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Craft, Computations, and Constructions
Research and Teaching by Jonathan Dessi-Olive.

︎MycoMatters Lab

Languages of Diffusion


This research is on a rule-based approach to designing creative acoustic diffuser arrays. A shape grammar-influenced design method is specified that uses shape rules to recursively design arrays of quadratic residue diffusers in a way that is neither mechanical nor deterministic. Shape grammar-based generative systems have already been shown to be capable of being used in architecture and engineering to create languages of functional objects but have not yet been extended into the realm of acoustics. The grammar presented by this paper produces a QRD-based acoustic diffusion language that breaks habits in QRD deploying techniques, which is lacking outside of using known equations that give known forms. The grammar can include different design frequencies and open the possibilities of different and non-uniform, intentional diffusion treatment. This paper will specify and demonstrate the formation rules, and discuss on how in combination with material specifications, this design method can generate broadband QRD arrays that address both performative and aesthetic criteria in new and surprising ways.

Link to the full paper “Evaluating QRD Arrays Generated with Shape Grammars” (SimAUD 2020)
Link to the full paper “Generating Acoustic Diffuser Arrays with Shape Grammars” (SimAUD 2019)

Shape Grammar Research Applied  to Architectural Acoustics

2017 - present

Project Collaborator:
Timothy Hsu
Assistant Professor of Music and Arts Technology, IUPUI


Example Grid-Configuration-Driven Designs
Computations of Large QRD Arrays

Other Projects:
all work by Jonathan Dessi-Olive unless otherwise noted.  © 2022 all rights reserved.