US 11,751,000 B2
Method of modeling the acoustic effects of the human head
Hélène Bahu, San Francisco, CA (US); and David E. Romblom, San Mateo, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Appl. No. 17/419,840
Filed by Google LLC, Mountain View, CA (US)
PCT Filed Jan. 31, 2020, PCT No. PCT/US2020/016017
§ 371(c)(1), (2) Date Jun. 30, 2021,
PCT Pub. No. WO2020/180431, PCT Pub. Date Sep. 10, 2020.
Claims priority of provisional application 62/812,485, filed on Mar. 1, 2019.
Prior Publication US 2022/0086589 A1, Mar. 17, 2022
Int. Cl. H04S 7/00 (2006.01); H04R 5/027 (2006.01)
CPC H04S 7/304 (2013.01) [H04R 5/027 (2013.01); H04S 2420/01 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of modeling the human head, a human head model having a width and an aspect ratio, the aspect ratio defining different head shapes independent of a size of the human head model, the method comprising the steps of:
forming a high-frequency head model based on ray-tracing and a plurality of half-plane sections;
coupling the high-frequency head model with a far-field shadowing filter;
coupling the far-field shadowing filter with a near-field compensation filter to compensate for acoustic changes between the far-field and near-field regions; and
modifying the aspect ratio of the human head model to configure variable geometric models of the human head ranging from a nearly spherical to a very narrow embodiment.