US 12,010,506 B2
Spatial audio reproduction based on head-to-torso orientation
Antti J. Vanne, Los Gatos, CA (US); Darius A. Satongar, Santa Clara, CA (US); James W. Vandyke, San Francisco, CA (US); Juha O. Merimaa, San Mateo, CA (US); Martin E. Johnson, Los Gatos, CA (US); and Tomi A. Huttunen, Kuopio (FI)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jun. 22, 2022, as Appl. No. 17/847,095.
Application 17/847,095 is a continuation of application No. 17/023,160, filed on Sep. 16, 2020, granted, now 11,375,333.
Claims priority of provisional application 62/903,430, filed on Sep. 20, 2019.
Prior Publication US 2022/0329965 A1, Oct. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04S 7/00 (2006.01); G06F 3/01 (2006.01); H04R 5/033 (2006.01); H04R 5/04 (2006.01)
CPC H04S 7/304 (2013.01) [G06F 3/012 (2013.01); G06F 3/017 (2013.01); H04R 5/033 (2013.01); H04R 5/04 (2013.01); H04S 2420/01 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method, comprising:
detecting a head movement of a head of a user based on head orientation data generated by a head mounted device;
determining a torso movement of a torso of the user based at least in part on a downward looking camera coupled to the head mounted device, wherein the downward looking camera is arranged to track a pattern of clothing on the torso of the user, wherein determining the torso movement includes identifying and tracking, using the downward looking camera, the pattern of the clothing;
determining a head-to-torso orientation based at least in part on the head movement and the torso movement;
selecting a head-related transfer function (HRTF) according to the head-to-torso orientation; and
applying a binaural audio filter to an audio input signal to generate an audio output signal, wherein the binaural audio filter is based on the HRTF.