US 12,266,375 B2
Encoder, decoder and method for encoding and decoding audio content using parameters for enhancing a concealment
Jérémie Lecomte, Santa Clara, CA (US); Benjamin Schubert, Nuremberg (DE); Michael Schnabel, Geroldsgruen (DE); and Martin Dietz, 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. 5, 2023, as Appl. No. 18/347,526.
Application 18/347,526 is a continuation of application No. 17/127,140, filed on Dec. 18, 2020, granted, now 11,735,196.
Application 17/127,140 is a continuation of application No. 15/442,980, filed on Feb. 27, 2017, granted, now 10,878,830, issued on Dec. 29, 2020.
Application 15/442,980 is a continuation of application No. PCT/EP2015/069348, filed on Aug. 24, 2015.
Claims priority of application No. 14182553 (EP), filed on Aug. 27, 2014; and application No. 15164126 (EP), filed on Apr. 17, 2015.
Prior Publication US 2024/0005935 A1, Jan. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G10L 19/20 (2013.01); G10L 19/005 (2013.01); G10L 19/24 (2013.01); G10L 25/93 (2013.01); G10L 19/002 (2013.01); G10L 19/018 (2013.01); G10L 19/02 (2013.01); G10L 19/083 (2013.01); G10L 19/125 (2013.01)
CPC G10L 19/20 (2013.01) [G10L 19/005 (2013.01); G10L 19/24 (2013.01); G10L 25/93 (2013.01); G10L 19/002 (2013.01); G10L 19/018 (2013.01); G10L 19/0212 (2013.01); G10L 19/083 (2013.01); G10L 19/125 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An apparatus for encoding audio content using at least a TCX (Transform Coded Excitation) coding scheme, wherein the apparatus is configured to
provide a primary encoded representation of a current frame and an encoded representation of at least one error concealment helper parameter for providing a decoder-sided guided error concealment of the current frame, wherein the encoded representation of the at least one error concealment helper parameter is transmitted in-band as part of the codec payload,
wherein the apparatus is configured to combine the encoded representation of the at least one error concealment helper parameter of the current frame with a primary encoded representation of a future frame into a transport packet such that the encoded representation of the at least one error concealment helper parameter of the current frame is sent with a time delay relative to the primary encoded representation of the current frame,
wherein the apparatus is configured to select the at least one error concealment helper parameter based on one or more parameters representing a signal characteristic of the audio content comprised in the current frame,
wherein the apparatus is configured to selectively choose between at least two modes for providing an encoded representation of the at least one error concealment helper parameter,
wherein one of the at least two modes for providing an encoded representation of the at least one error concealment helper parameter is a time domain concealment mode that is selected if the audio content comprised in the current frame comprises a transient or if the global gain of the audio content comprised in the current frame is lower than the global gain of the preceding frame,
and wherein a further one of the at least two modes for providing an encoded representation of the at least one error concealment helper parameter is a frequency domain concealment mode such that the encoded representation of the at least one error concealment helper parameter comprises one or more of an LSF (Line Spectral Frequency) parameter, a TCX (Transform Coded Excitation) global gain and a classifier information,
wherein the apparatus is implemented, at least in part, by one or more hardware elements.