US 12,475,903 B2
Audio encoder and bandwidth extension decoder
Frederik Nagel, Nuremberg (DE); Sascha Disch, Fuerth (DE); Guillaume Fuchs, Erlangen (DE); Juergen Herre, Buckenhof (DE); and Christian Griebel, Nuremberg (DE)
Assigned to FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V., Munich (DE)
Filed by Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Munich (DE)
Filed on Jul. 14, 2023, as Appl. No. 18/221,964.
Application 18/221,964 is a continuation of application No. 17/965,830, filed on Oct. 14, 2022, granted, now 11,705,146.
Application 17/965,830 is a continuation of application No. 17/159,331, filed on Jan. 27, 2021, granted, now 11,594,237, issued on Feb. 28, 2023.
Application 17/159,331 is a continuation of application No. 16/260,487, filed on Jan. 29, 2019, granted, now 10,937,437, issued on Mar. 2, 2021.
Application 16/260,487 is a continuation of application No. 14/709,804, filed on May 12, 2015, granted, now 10,229,696, issued on Mar. 12, 2019.
Application 14/709,804 is a continuation of application No. 13/691,950, filed on Dec. 3, 2012, granted, now 9,058,802, issued on Jun. 16, 2015.
Application 13/691,950 is a continuation of application No. 13/158,547, filed on Jun. 13, 2011, granted, now 8,401,862, issued on Mar. 19, 2013.
Application 13/158,547 is a continuation of application No. PCT/EP2009/066980, filed on Dec. 11, 2009.
Claims priority of provisional application 61/122,552, filed on Dec. 15, 2008.
Prior Publication US 2023/0377590 A1, Nov. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G10L 21/038 (2013.01); G10L 19/00 (2013.01); G10L 19/26 (2013.01); G10L 19/24 (2013.01)
CPC G10L 19/265 (2013.01) [G10L 19/00 (2013.01); G10L 21/038 (2013.01); G10L 19/24 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A bandwidth extension audio decoder, comprising:
a core decoder configured to decode a received bit stream comprising an input audio signal and a parameter signal, wherein the parameter signal comprises an indication of an offset frequency or an indication of a power density parameter;
a patch generator configured to generate a bandwidth extension high-frequency signal comprising a high-frequency band using the input audio signal and the parameter signal comprising the indication of the offset frequency or the indication of the power density parameter;
a parameter extraction unit configured for separating the parameter signal from the received bit stream and for providing a separated parameter signal to the patch generator;
a combiner configured to combine the bandwidth extension high-frequency signal and the input audio signal to acquire a bandwidth extended audio signal; and
an output interface configured to output the bandwidth extended audio signal;
wherein the core decoder is connected to the patch generator and the combiner, wherein the parameter extraction unit is connected to the patch generator and to the output interface, wherein the patch generator is connected to the combiner, and wherein the combiner is connected to the output interface, and
wherein the core decoder is configured to provide the input audio signal to the patch generator and the combiner.