US 11,915,712 B2
Audio encoder and decoder using a frequency domain processor, a time domain processor, and a cross processing for continuous initialization
Sascha Disch, Fürth (DE); Martin Dietz, Nuremberg (DE); Markus Multrus, Nuremberg (DE); Guillaume Fuchs, Bubenreuth (DE); Emmanuel Ravelli, Erlangen (DE); Matthias Neusinger, Rohr (DE); Markus Schnell, Nuremberg (DE); Benjamin Schubert, Nuremberg (DE); and Bernhard Grill, Nuremberg (DE)
Assigned to Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., (DE)
Filed by Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Filed on Nov. 1, 2021, as Appl. No. 17/453,139.
Application 17/453,139 is a continuation of application No. 16/290,587, filed on Mar. 1, 2019, granted, now 11,410,668.
Application 16/290,587 is a continuation of application No. 15/414,289, filed on Jan. 24, 2017, granted, now 10,236,007.
Application 15/414,289 is a continuation of application No. PCT/EP2015/067005, filed on Jul. 24, 2015.
Claims priority of application No. 14178819 (EP), filed on Jul. 28, 2014.
Prior Publication US 2022/0051681 A1, Feb. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G10L 19/00 (2013.01); G10L 19/02 (2013.01); G10L 19/022 (2013.01); G10L 19/028 (2013.01); G10L 19/04 (2013.01); G10L 19/083 (2013.01); G10L 19/18 (2013.01); G10L 19/24 (2013.01); G10L 19/26 (2013.01); G10L 21/038 (2013.01)
CPC G10L 19/0208 (2013.01) [G10L 19/022 (2013.01); G10L 19/18 (2013.01); G10L 19/24 (2013.01); G10L 2019/0001 (2013.01); G10L 19/02 (2013.01); G10L 19/028 (2013.01); G10L 19/04 (2013.01); G10L 19/083 (2013.01); G10L 19/26 (2013.01); G10L 21/038 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An audio decoder for decoding an encoded audio signal, comprising:
a first decoding processor configured for decoding a first encoded audio signal portion in a frequency domain to obtain a decoded spectral representation, the first decoding processor comprising a frequency-time converter configured for converting the decoded spectral representation into a time domain to acquire a decoded first audio signal portion, wherein the first decoding processor is configured to reconstruct a first set of first spectral portions in a waveform—preserving manner to generate a spectrum having gaps, wherein the gaps in the spectrum are filled with an Intelligent Gap Filling (IGF) technology comprising using a frequency regeneration applying parametric data and using reconstructed first spectral portions of the first set of first spectral portions;
a second decoding processor configured for decoding a second encoded audio signal portion in the time domain to acquire a decoded second audio signal portion;
a cross-processor configured for calculating, from the decoded spectral representation of the first encoded audio signal portion, initialization data of the second decoding processor, so that the second decoding processor is initialized to decode the second encoded audio signal portion following in time the first encoded audio signal portion in the encoded audio signal; and
a combiner configured for combining the decoded first audio signal portion and the decoded second audio signal portion to acquire a decoded audio signal.