Acoustic Voxels: Computational Optimization of Modular Acoustic Filters

Authors

Dingzeyu Li (Columbia University)
David Levin (Disney Research Pittsburgh)
Wojciech Matusik ( MIT CSAIL)
Changxi Zheng (Columbia University)

ACM SIGGRAPH 2016

July 24, 2016

Acoustic Voxels Computational Optimization of Modular Acoustic Filters-Image1

Acoustic Tagging. By optimizing the structure of primitives (a), we control the acoustic response of an object when it is tapped (c) and thereby tag the object acoustically. Given three objects with identical shapes (b), we can use a smartphone to read the acoustic tags in realtime, by recording and analyzing the tapping sound, and thereby identify each object.

Acoustic filters have a wide range of applications, yet customizing them with desired properties is difficult. Motivated by recent progress in additive manufacturing that allows for fast prototyping of complex shapes, we present a computational approach that automates the design of acoustic filters with complex geometries. In our approach, we construct an acoustic filter comprised of a set of parameterized shape primitives, whose transmission matrices can be precomputed. Using an efficient method of simulating the transmission matrix of an assembly built from these underlying primitives, our method is able to optimize both the arrangement and the parameters of the acoustic shape primitives in order to satisfy target acoustic properties of the filter. We validate our results against industrial laboratory measurements and high-quality off-line simulations. We demonstrate that our method enables a wide range of applications including muffler design, musical wind instrument prototyping, and encoding imperceptible acoustic information into everyday objects.

Download File "Acoustic Voxels Computational Optimization of Modular Acoustic Filters-Paper"
[pdf, 28.83 MB]

Copyright Notice

The documents contained in these directories are included by the contributing authors as a means to ensure timely dissemination of scholarly and technical work on a non-commercial basis. Copyright and all rights therein are maintained by the authors or by other copyright holders, notwithstanding that they have offered their works here electronically. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder.