US 12,273,702 B2
Headtracking for pre-rendered binaural audio
C. Phillip Brown, Castro Valley, CA (US); Joshua Brandon Lando, San Francisco, CA (US); Mark F. Davis, Pacifica, CA (US); Alan J. Seefeldt, Alameda, CA (US); David Matthew Cooper, Carlton (AU); Dirk Jeroen Breebaart, Ultimo (AU); and Rhonda Wilson, San Francisco, CA (US)
Assigned to Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
Filed by Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
Filed on Nov. 30, 2022, as Appl. No. 18/060,232.
Application 18/060,232 is a continuation of application No. 17/167,442, filed on Feb. 4, 2021, granted, now 11,553,296.
Application 17/167,442 is a continuation of application No. 16/309,578, granted, now 10,932,082, issued on Feb. 23, 2021, previously published as PCT/US2017/038372, filed on Jun. 20, 2017.
Claims priority of provisional application 62/405,677, filed on Oct. 7, 2016.
Claims priority of provisional application 62/352,685, filed on Jun. 21, 2016.
Claims priority of application No. 16175495 (EP), filed on Jun. 21, 2016.
Prior Publication US 2023/0091218 A1, Mar. 23, 2023
Int. Cl. H04S 7/00 (2006.01)
CPC H04S 7/304 (2013.01) [H04S 2420/01 (2013.01); H04S 2420/03 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of modifying a binaural signal using headtracking information, the method comprising:
receiving, by a headset, a binaural audio signal;
upmixing the binaural audio signal into a four-channel binaural signal, wherein the four-channel binaural signal includes a front binaural signal and a rear binaural signal;
generating, by a sensor, headtracking data, wherein the headtracking data relates to an orientation of the headset;
applying the headtracking data to the front binaural signal to generate a modified front binaural signal;
applying an inverse of the headtracking data to the rear binaural signal to generate a modified rear binaural signal;
combining the modified front binaural signal and the modified rear binaural signal to generate a combined binaural signal; and
outputting, by at least two speakers of the headset, the combined binaural signal.