US 12,089,033 B2
Generating binaural audio in response to multi-channel audio using at least one feedback delay network
Kuan-Chieh Yen, Foster City, CA (US); Dirk Jeroen Breebaart, Ultimo (AU); Grant A. Davidson, Burlingame, CA (US); Rhonda Wilson, San Francisco, CA (US); David M. Cooper, Carlton (AU); and Zhiwei Shuang, Beijing (CN)
Assigned to DOLBY LABORATORIES LICENSING CORPORATION, San Francisco, CA (US)
Filed by DOLBY LABORATORIES LICENSING CORPORATION, San Francisco, CA (US)
Filed on Feb. 13, 2023, as Appl. No. 18/108,663.
Application 18/108,663 is a continuation of application No. 17/560,301, filed on Dec. 23, 2021, granted, now 11,582,574.
Application 17/560,301 is a continuation of application No. 17/012,076, filed on Sep. 4, 2020, granted, now 11,212,638, issued on Dec. 28, 2021.
Application 17/012,076 is a continuation of application No. 16/777,599, filed on Jan. 30, 2020, granted, now 10,771,914, issued on Sep. 8, 2020.
Application 16/777,599 is a continuation of application No. 16/541,079, filed on Aug. 14, 2019, granted, now 10,555,109, issued on Feb. 4, 2020.
Application 16/541,079 is a continuation of application No. 15/109,541, granted, now 10,425,763, issued on Sep. 24, 2019, previously published as PCT/US2014/071100, filed on Dec. 18, 2014.
Claims priority of provisional application 61/988,617, filed on May 5, 2014.
Claims priority of provisional application 61/923,579, filed on Jan. 3, 2014.
Claims priority of application No. 201410178258.0 (CN), filed on Apr. 29, 2014.
Prior Publication US 2023/0199427 A1, Jun. 22, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04S 7/00 (2006.01); G10L 19/008 (2013.01); H04S 3/00 (2006.01)
CPC H04S 7/306 (2013.01) [G10L 19/008 (2013.01); H04S 3/004 (2013.01); H04S 7/307 (2013.01); H04S 2400/03 (2013.01); H04S 2400/13 (2013.01); H04S 2420/01 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for generating a binaural signal in response to a set of channels of a multi-channel audio input signal, the method comprising:
applying a binaural room impulse response, BRIR, to each channel of the set, thereby generating filtered signals; and
combining the filtered signals to generate the binaural signal,
wherein applying the BRIR to each channel of the set comprises using a late reverberation generator to introduce, in response to control values asserted to the late reverberation generator, a common late reverberation into a downmix of the channels of the set, wherein the common late reverberation emulates collective macro attributes of late reverberation portions of single-channel BRIRs shared across at least some channels of the set, and
wherein a content dependent energy equalization factor is applied to the downmix, and wherein a center channel of the multi-channel audio input signal is panned to both a left channel of the downmix and a right channel of the downmix.