US 12,243,542 B2
Reconstruction of audio scenes from a downmix
Toni Hirvonen, Helsinki (FI); Heiko Purnhagen, Sundbyberg (SE); Leif Jonas Samuelsson, Sundbyberg (SE); and Lars Villemoes, Jarfalla (SE)
Assigned to DOLBY INTERNATIONAL AB, Dublin (IE)
Filed by DOLBY INTERNATIONAL AB, Dublin (IE)
Filed on Dec. 14, 2023, as Appl. No. 18/540,546.
Application 17/219,911 is a division of application No. 16/380,879, filed on Apr. 10, 2019, granted, now 10,971,163, issued on Apr. 6, 2021.
Application 18/540,546 is a continuation of application No. 18/167,204, filed on Feb. 10, 2023, granted, now 11,894,003.
Application 18/167,204 is a continuation of application No. 17/219,911, filed on Apr. 1, 2021, granted, now 11,580,995, issued on Feb. 14, 2023.
Application 16/380,879 is a continuation of application No. 15/584,553, filed on May 2, 2017, granted, now 10,290,304, issued on May 14, 2019.
Application 15/584,553 is a continuation of application No. 14/893,377, granted, now 9,666,198, issued on May 30, 2017, previously published as PCT/EP2014/060732, filed on May 23, 2014.
Claims priority of provisional application 61/827,469, filed on May 24, 2013.
Prior Publication US 2024/0185864 A1, Jun. 6, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04R 5/00 (2006.01); G10L 19/008 (2013.01); G10L 19/02 (2013.01); G10L 19/20 (2013.01); G10L 25/06 (2013.01); H04S 3/00 (2006.01); H04S 3/02 (2006.01); H04S 5/00 (2006.01); H04S 7/00 (2006.01)
CPC G10L 19/008 (2013.01) [G10L 19/0204 (2013.01); G10L 19/20 (2013.01); G10L 25/06 (2013.01); H04S 3/008 (2013.01); H04S 3/02 (2013.01); H04S 5/00 (2013.01); H04S 7/30 (2013.01); H04S 2400/03 (2013.01); H04S 2400/11 (2013.01); H04S 2420/03 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A method for reconstructing a time frame of an audio scene with at least a plurality of N audio signals from a bitstream, the method comprising:
receiving the bitstream comprising the N audio signals signal, wherein N>1;
decoding a downmix signal from the bitstream, the downmix signal comprising M downmix channels, wherein M>1 and each downmix channel is associated with a spatial locator of a plurality of spatial locators; and
reconstructing the N audio signals based on as an inner product of a plurality of correlation coefficients and the downmix signal, wherein the plurality of correlation coefficients correspond to one or more of the plurality of spatial locators, wherein the correlation coefficients were predetermined.