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1. 发明授权

EP4250290B1 IMPROVED SUBBAND BLOCK BASED HARMONIC TRANSPOSITION 有权
公开(公告)号：EP4250290B1
公开(公告)日：2024-08-21
申请号：EP23190357.6
申请日：2011-01-05
IPC分类号： G10L21/04 , G10L19/022 , G10L25/18 , G10L21/038 , G10L19/02
CPC分类号： G10L19/0204 , G10L19/022 , G10L21/04 , G10L21/038 , G10L25/18

2. 发明公开

EP4386745A2 DOWNSCALED DECODING 审中-公开
公开(公告)号：EP4386745A2
公开(公告)日：2024-06-19
申请号：EP24165637.0
申请日：2016-06-10
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： SCHNELL, Markus , LUTZKY, Manfred , FOTOPOULOU, Eleni , SCHMIDT, Konstantin , BENNDORF, Conrad , TOMASEK, Adrian , ALBERT, Tobias , SEIDL, Timon
IPC分类号： G10L19/022
CPC分类号： G10L19/022 , G10L19/0212
摘要： A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of 1/4 of the frame length.

3. 发明公开

EP4283877A3 ENCODER AND ENCODING METHOD, DECODER AND DECODING METHOD, AND PROGRAM 审中-实审
公开(公告)号：EP4283877A3
公开(公告)日：2024-01-10
申请号：EP23195286.2
申请日：2019-06-07
申请人： Sony Group Corporation
发明人： KONO, Akifumi , CHINEN, Toru , HONMA, Hiroyuki , OIKAWA, Yoshiaki
IPC分类号： G10L19/22 , G10L19/02 , G10L19/00 , H03M7/40 , H03M7/30 , G10L19/022 , G10L19/032
摘要： Provided is a decoding device including a demultiplexing section configured to demultiplex a coded bit stream, and extract transform window information indicating a type of a transform window used in time-frequency transform of an audio signal and coded data regarding frequency spectrum information obtained by the time-frequency transform from the coded bit stream. The decoding device further includes a decoding section configured to decode the coded data. Additionally, the decoding device includes a decoding scheme selection section configured to select a decoding scheme for the decoding section based on the transform window information. The decoding scheme selection section is configured to control the decoding section to decode the coded data by a decoding scheme corresponding to Huffman coding in a case in which the type of the transform window indicated by the transform window information is a transform window selected at a time of changing over the transform window length from a small transform window length to a large transform window length. Furthermore, the decoding scheme selection section is configured to control the decoding section to decode the coded data by a decoding scheme corresponding to arithmetic coding in a case in which the type of the transform window indicated by the transform window information is not the transform window selected at the time of changing over the transform window length from the small transform window length to the large transform window length.

5. 发明公开

EP4239633A2 DOWNSCALED DECODING 审中-实审
公开(公告)号：EP4239633A2
公开(公告)日：2023-09-06
申请号：EP23174596.9
申请日：2016-06-10
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： SCHNELL, Markus , LUTZKY, Manfred , FOTOPOULOU, Eleni , SCHMIDT, Konstantin , BENNDORF, Conrad , TOMASEK, Adrian , ALBERT, Tobias , SEIDL, Timon
IPC分类号： G10L19/02 , G10L19/022
摘要： A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of 1/4 of the frame length.

6. 发明公开

EP4235658A2 DOWNSCALED DECODING OF AUDIO SIGNALS 审中-实审
公开(公告)号：EP4235658A2
公开(公告)日：2023-08-30
申请号：EP23174595.1
申请日：2016-06-10
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： SCHNELL, Markus , LUTZKY, Manfred , FOTOPOULOU, Eleni , SCHMIDT, Konstantin , BENNDORF, Conrad , TOMASEK, Adrian , ALBERT, Tobias , SEIDL, Timon
IPC分类号： G10L19/022
摘要： A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of 1/4 of the frame length.

7. 发明公开

EP4191581A1 FREQUENCY-DOMAIN AUDIO DECODING SUPPORTING TRANSFORM LENGTH SWITCHING 有权
公开(公告)号：EP4191581A1
公开(公告)日：2023-06-07
申请号：EP23150061.2
申请日：2014-07-15
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Dick, Sascha , Helmrich, Christian , Hölzer, Andreas
IPC分类号： G10L19/022 , G10L19/03 , G10L19/008 , G10L19/028
摘要： A frequency-domain audio codec is provided with the ability to additionally support a certain transform length in a backward-compatible manner, by the following: the frequency-domain coefficients of a respective frame are transmitted in an interleaved manner irrespective of the signalization signaling for the frames as to which transform length actually applies, and additionally the frequency-domain coefficient extraction and the scale factor extraction operate independent from the signalization. By this measure, old-fashioned frequency-domain audio coders/decoders, insensitive for the signalization, would be able to nevertheless operate without faults and with reproducing a reasonable quality. Concurrently, frequency-domain audio coders/decoders able to support the additional transform length would offer even better quality despite the backward compatibility. As far as coding efficiency penalties due to the coding of the frequency domain coefficients in a manner transparent for older decoders are concerned, same are of comparatively minor nature due to the interleaving.

8. 发明授权

EP3848928B1 APPARATUS AND METHOD FOR GENERATING COMPLEX-VALUED AUDIO SUBBAND VALUES 有权转让
公开(公告)号：EP3848928B1
公开(公告)日：2023-03-15
申请号：EP21160250.3
申请日：2007-10-23
发明人： Schnell, Markus , Lutzky, Manfred , Lohwasser, Markus , Schmidt, Markus , Gayer, Marc , Mellar, Michael , Edler, Bernd , Multrus, Markus , Schuller, Gerald , Geiger, Ralf , Grill, Bernhard
IPC分类号： G10L19/02 , G10L19/022 , G10L25/45 , H03H17/02 , G10L21/038

9. 发明授权

EP3573056B1 AUDIO ENCODER AND AUDIO DECODER 有权转让
公开(公告)号：EP3573056B1
公开(公告)日：2022-08-17
申请号：EP19160283.8
申请日：2009-05-18
发明人： Multrus, Markus , Grill, Bernhard , Fuchs, Guillaume , Geyersberger, Stefan , Rettelbach, Nikolaus , Bacigalupo, Virgilio
IPC分类号： H03M7/40 , G10L19/02 , H03M7/30 , G10L19/022

10. 发明授权

EP3692521B1 AUDIO FILE ENVELOPE BASED ON RMS POWER IN SEQUENCES OF SUB-WINDOWS . 有权
公开(公告)号：EP3692521B1
公开(公告)日：2022-06-01
申请号：EP18782742.3
申请日：2018-10-05
发明人： DERUTY, Emmanuel
IPC分类号： G10H1/00 , G10L19/022

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