US 12,354,579 B2
Systems and methods for acoustic simulation
Doug Leonard James, Stanford, CA (US); and Jui-Hsien Wang, Stanford, CA (US)
Assigned to The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US)
Appl. No. 17/595,935
Filed by The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US)
PCT Filed May 29, 2020, PCT No. PCT/US2020/035247
§ 371(c)(1), (2) Date Nov. 29, 2021,
PCT Pub. No. WO2020/243517, PCT Pub. Date Dec. 3, 2020.
Claims priority of provisional application 62/854,037, filed on May 29, 2019.
Prior Publication US 2022/0319483 A1, Oct. 6, 2022
Int. Cl. G03H 3/00 (2006.01); G10H 1/38 (2006.01)
CPC G10H 1/38 (2013.01) [G10H 2210/301 (2013.01); G10H 2220/455 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for simulating acoustic responses, comprising:
obtaining a digital model of an object;
calculating a plurality of vibrational modes of the object;
conflating the plurality of vibrational modes into a plurality of chords, where each chord comprises a subset of the plurality of vibrational modes;
calculating, for each chord, a chord sound field in the time domain, where the chord sound field describes acoustic pressure surrounding the object when the object oscillates in accordance with the subset of the plurality of vibrational modes;
deconflating each chord sound field into a plurality of modal sound fields, where each modal sound field describes acoustic pressure surrounding the object when the object oscillates in accordance with a single vibrational mode;
storing each modal sound field in a far-field acoustic transfer (FFAT) map, wherein the FFAT map approximates a squared transfer amplitude at a plurality of coordinates; and
simulating an acoustic response of the object using the FFAT map.