US 12,293,768 B2
Audio decoder for interleaving signals
Kristofer Kjörling, Solna (SE); Heiko Purnhagen, Sundbyberg (SE); Harald Mundt, Fürth (DE); Karl Jonas Roeden, Solna (SE); and Leif Sehlström, Järfälla (SE)
Assigned to Dolby International AB, Dublin (IE)
Filed by Dolby International AB, Dublin (IE)
Filed on Nov. 8, 2023, as Appl. No. 18/504,879.
Application 16/593,830 is a division of application No. 15/641,033, filed on Jul. 3, 2017, granted, now 10,438,602.
Application 18/504,879 is a continuation of application No. 17/463,192, filed on Aug. 31, 2021, granted, now 11,830,510.
Application 17/463,192 is a continuation of application No. 16/593,830, filed on Oct. 4, 2019, granted, now 11,114,107, issued on Sep. 7, 2021.
Application 15/641,033 is a continuation of application No. 15/227,283, filed on Aug. 3, 2016, granted, now 9,728,199, issued on Aug. 8, 2017.
Application 15/227,283 is a continuation of application No. 14/772,001, granted, now 9,489,957, issued on Nov. 8, 2016, previously published as PCT/EP2014/056852, filed on Apr. 4, 2014.
Claims priority of provisional application 61/808,680, filed on Apr. 5, 2013.
Prior Publication US 2024/0153517 A1, May 9, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G10L 19/00 (2013.01); G10L 19/008 (2013.01); G10L 19/02 (2013.01); G10L 19/16 (2013.01); G10L 19/20 (2013.01); G10L 25/18 (2013.01); H04S 3/00 (2006.01)
CPC G10L 19/20 (2013.01) [G10L 19/008 (2013.01); G10L 19/0212 (2013.01); G10L 19/167 (2013.01); G10L 25/18 (2013.01); H04S 3/008 (2013.01); H04S 2400/03 (2013.01); H04S 2420/03 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A decoding method in a multi-channel audio processing system, the decoding method comprising:
de multiplexing from a bitstream a parameter for frequency reconstruction;
receiving at least a waveform-coded downmix signal comprising spectral coefficients corresponding to frequencies above a first fixed cross-over frequency;
performing frequency reconstruction to determine a reconstructed signal based on the waveform-coded downmix signal based on the parameter, wherein the reconstructed signal is above a second cross-over frequency, wherein the second fixed cross-over frequency is different than the first cross-over frequency; and
performing a parametric upmix of the reconstructed signal into M upmix signals.