Martinez Plasencia, D;
Hirayama, R;
Montano Murillo, R;
Subramanian, S;
(2020)
GS-PAT: High-Speed Multi-Point Sound-Fields for Phased Arrays of Transducers.
ACM Transactions on Graphics
, 39
(4)
138.1-138.12.
10.1145/3386569.3392492.
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SupplementaryMaterial_GS-PAT_v2.pdf - Accepted Version Download (6MB) | Preview |
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Abstract
Phased Arrays of Transducers (PATs) allow accurate control of ultrasound fields, with applications in haptics, levitation (i.e. displays) and parametric audio. However, algorithms for multi-point levitation or tactile feedback are usually limited to computing solutions in the order of hundreds of sound-fields per second, preventing the use of multiple high-speed points, a feature that can broaden the scope of applications of PATs. We present GS-PAT, a GPU multi-point phase retrieval algorithm, capable of computing 17K solutions per second for up to 32 simultaneous points in a mid-end consumer grade GPU (NVidia GTX 1660). We describe the algorithm and compare it to state of the art multi-point algorithms used for ultrasound haptics and levitation, showing similar quality of the generated sound-fields, and much higher computation rates. We then illustrate how the shift in paradigm enabled by GS-PAT (i.e. real-time control of several high-speed points) opens new applications for PAT technologies, such as in volumetric fully coloured displays, multi-point spatio-temporal tactile feedback, parametric audio and simultaneous combinations of these modalities.
| Type: | Article |
|---|---|
| Title: | GS-PAT: High-Speed Multi-Point Sound-Fields for Phased Arrays of Transducers |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1145/3386569.3392492 |
| Publisher version: | https://doi.org/10.1145/3386569.3392492 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | Multi-point phase optimization, Parametric Sound, Mid-air haptics, human-computer interaction, Acoustic Levitation |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS 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 |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10106840 |
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