Hirayama, Ryuji;
Christopoulos, Giorgos;
Martinez Plasencia, Diego;
Subramanian, Sriram;
(2022)
High-speed acoustic holography with arbitrary scattering objects.
Science Advances
, 8
(24)
, Article eabn7614. 10.1126/sciadv.abn7614.
(In press).
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Abstract
Recent advances in high-speed acoustic holography have enabled levitation-based volumetric displays with tactile and audio sensations. However, current approaches do not compute sound scattering of objects’ surfaces; thus, any physical object inside can distort the sound field. Here, we present a fast computational technique that allows high-speed multipoint levitation even with arbitrary sound-scattering surfaces and demonstrate a volumetric display that works in the presence of any physical object. Our technique has a two-step scattering model and a simplified levitation solver, which together can achieve more than 10,000 updates per second to create volumetric images above and below static sound-scattering objects. The model estimates transducer contributions in real time by reformulating the boundary element method for acoustic holography, and the solver creates multiple levitation traps. We explain how our technique achieves its speed with minimum loss in the trap quality and illustrate how it brings digital and physical content together by demonstrating mixed-reality interactive applications.
| Type: | Article |
|---|---|
| Title: | High-speed acoustic holography with arbitrary scattering objects |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1126/sciadv.abn7614 |
| Publisher version: | https://doi.org/10.1126/sciadv.abn7614 |
| Language: | English |
| Additional information: | © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (https://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10150452 |
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