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公开(公告)号：USRE50159E1
公开(公告)日：2024-10-01
申请号：US17845632
申请日：2022-06-21
Inventor： Markus Schnell , Manfred Lutzky , Markus Lohwasser , Markus Schmidt , Marc Gayer , Michael Mellar , Bernd Edler , Markus Multrus , Gerald Schuller , Ralf Geiger , Bernhard Grill
IPC: G01L19/14 , G10L19/02 , G10L19/022 , G10L25/45 , H03H17/02 , G10L21/038
CPC classification number: G10L19/0204 , G10L19/022 , G10L25/45 , H03H17/0266 , G10L21/038
Abstract: An embodiment of an apparatus for generating audio subband values in audio subband channels includes an analysis windower for windowing a frame of time-domain audio input samples being in a time sequence extending from an early sample to a later sample using an analysis window function including a sequence of window coefficients to obtain windowed samples. The analysis window function includes a first number of window coefficients derived from a larger window function including a sequence of a larger second number of window coefficients, wherein the window coefficients of the window function are derived by an interpolation of window coefficients of the larger window function. The apparatus further includes a calculator for calculating the audio subband values using the windowed samples.
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公开(公告)号：USRE50157E1
公开(公告)日：2024-10-01
申请号：US17845520
申请日：2022-06-21
Inventor： Markus Schnell , Manfred Lutzky , Markus Lohwasser , Markus Schmidt , Marc Gayer , Michael Mellar , Bernd Edler , Markus Multrus , Gerald Schuller , Ralf Geiger , Bernhard Grill
IPC: G10L19/00 , G10L19/02 , G10L19/022 , G10L25/45 , H03H17/02 , G10L21/038
CPC classification number: G10L19/0204 , G10L19/022 , G10L25/45 , H03H17/0266 , G10L21/038
Abstract: An embodiment of an apparatus for generating audio subband values in audio subband channels includes an analysis windower for windowing a frame of time-domain audio input samples being in a time sequence extending from an early sample to a later sample using an analysis window function including a sequence of window coefficients to obtain windowed samples. The analysis window function includes a first number of window coefficients derived from a larger window function including a sequence of a larger second number of window coefficients, wherein the window coefficients of the window function are derived by an interpolation of window coefficients of the larger window function. The apparatus further includes a calculator for calculating the audio subband values using the windowed samples.
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公开(公告)号：USRE50054E1
公开(公告)日：2024-07-23
申请号：US17845564
申请日：2022-06-21
Inventor： Markus Schnell , Manfred Lutzky , Markus Lohwasser , Markus Schmidt , Marc Gayer , Michael Mellar , Bernd Edler , Markus Multrus , Gerald Schuller , Ralf Geiger , Bernhard Grill
IPC: G01L19/14 , G10L19/02 , G10L19/022 , G10L25/45 , H03H17/02 , G10L21/038
CPC classification number: G10L19/0204 , G10L19/022 , G10L25/45 , H03H17/0266 , G10L21/038
Abstract: An embodiment of an apparatus for generating audio subband values in audio subband channels includes an analysis windower for windowing a frame of time-domain audio input samples being in a time sequence extending from an early sample to a later sample using an analysis window function including a sequence of window coefficients to obtain windowed samples. The analysis window function includes a first number of window coefficients derived from a larger window function including a sequence of a larger second number of window coefficients, wherein the window coefficients of the window function are derived by an interpolation of window coefficients of the larger window function. The apparatus further includes a calculator for calculating the audio subband values using the windowed samples.
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44.发明授权公开(公告)号：US11996110B2
公开(公告)日：2024-05-28
申请号：US17827316
申请日：2022-05-27
Inventor： Guillaume Fuchs , Tom Baeckstroem , Ralf Geiger , Wolfgang Jaegers , Emmanuel Ravelli
IPC: G10L19/02 , G10L19/087 , G10L19/12 , G10L19/26 , G10L19/06
CPC classification number: G10L19/087 , G10L19/02 , G10L19/12 , G10L19/26 , G10L19/06
Abstract: A method and an apparatus for synthesizing an audio signal are described. A spectral tilt is applied to the code of a codebook used for synthesizing a current frame of the audio signal. The spectral tilt is based on the spectral tilt of the current frame of the audio signal. Further, an audio decoder operating in accordance with the inventive approach is described.
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45.发明授权公开(公告)号：US11961530B2
公开(公告)日：2024-04-16
申请号：US18152721
申请日：2023-01-10
Inventor： Ralf Geiger , Max Neuendorf , Yoshikazu Yokotani , Nikolaus Rettelbach , Juergen Herre , Stefan Geyersberger
IPC: G10L19/18 , G10L19/00 , G10L19/02 , G10L19/022 , G10L19/032 , G10L19/26 , H04N19/00 , H04N21/2368 , H04N21/2383 , H04N21/2662 , H04N21/434 , H04N21/438
CPC classification number: G10L19/18 , G10L19/00 , G10L19/02 , G10L19/022 , G10L19/032 , G10L19/265 , H04N19/00 , H04N21/2368 , H04N21/2383 , H04N21/2662 , H04N21/4341 , H04N21/4382
Abstract: An apparatus for decoding data segments representing a time-domain data stream, a data segment being encoded in the time domain or in the frequency domain, a data segment being encoded in the frequency domain having successive blocks of data representing successive and overlapping blocks of time-domain data samples. The apparatus includes a time-domain decoder for decoding a data segment being encoded in the time domain and a processor for processing the data segment being encoded in the frequency domain and output data of the time-domain decoder to obtain overlapping time-domain data blocks. The apparatus further includes an overlap/add-combiner for combining the overlapping time-domain data blocks to obtain a decoded data segment of the time-domain data stream.
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Patent Agency Ranking
公开(公告)号：US11804232B2
公开(公告)日：2023-10-31
申请号：US17172335
申请日：2021-02-10
Inventor： Markus Lohwasser , Manuel Jander , Max Neuendorf , Ralf Geiger , Markus Schnell , Matthias Hildenbrand , Tobias Chalupka
CPC classification number: G10L19/24 , G10L19/008 , G10L19/0204 , G10L19/16 , G10L19/26 , H03H17/0211 , H03H17/0272 , H03H17/0621 , G10L19/02 , H03H17/0294
Abstract: An apparatus for processing an audio signal includes a configurable first audio signal processor for processing the audio signal in accordance with different configuration settings to obtain a processed audio signal, wherein the apparatus is adapted so that different configuration settings result in different sampling rates of the processed audio signal. The apparatus furthermore includes n analysis filter bank having a first number of analysis filter bank channels, a synthesis filter bank having a second number of synthesis filter bank channels, a second audio processor being adapted to receive and process an audio signal having a predetermined sampling rate, and a controller for controlling the first number of analysis filter bank channels or the second number of synthesis filter bank channels in accordance with a configuration setting.
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47.发明授权公开(公告)号：US11373664B2
公开(公告)日：2022-06-28
申请号：US16549878
申请日：2019-08-23
Inventor： Guillaume Fuchs , Tom Baeckstroem , Ralf Geiger , Wolfgang Jaegers , Emmanuel Ravelli
Abstract: A method and an apparatus for synthesizing an audio signal are described. A spectral tilt is applied to the code of a codebook used for synthesizing a current frame of the audio signal. The spectral tilt is based on the spectral tilt of the current frame of the audio signal. Further, an audio decoder operating in accordance with the inventive approach is described.
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48.发明授权公开(公告)号：US11238874B2
公开(公告)日：2022-02-01
申请号：US16506767
申请日：2019-07-09
Inventor： Sascha Disch , Guillaume Fuchs , Emmanuel Ravelli , Christian Neukam , Konstantin Schmidt , Conrad Benndorf , Andreas Niedermeier , Benjamin Schubert , Ralf Geiger
IPC: G10L19/008 , G10L19/02 , G10L19/04 , G10L19/18 , G10L21/038 , G10L19/032 , G10L19/13
Abstract: Audio encoder for encoding a multichannel signal is shown. The audio encoder includes a downmixer for downmixing the multichannel signal to obtain a downmix signal, a linear prediction domain core encoder for encoding the downmix signal, wherein the downmix signal has a low band and a high band, wherein the linear prediction domain core encoder is configured to apply a bandwidth extension processing for parametrically encoding the high band, a filterbank for generating a spectral representation of the multichannel signal, and a joint multichannel encoder configured to process the spectral representation including the low band and the high band of the multichannel signal to generate multichannel information.
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49.发明授权公开(公告)号：US10354665B2
公开(公告)日：2019-07-16
申请号：US15660899
申请日：2017-07-26
Inventor： Sascha Disch , Ralf Geiger , Christian Helmrich , Markus Multrus , Konstantin Schmidt
IPC: G10L19/00 , G10L19/12 , G10L21/0388 , G10L19/032 , G10L19/02 , G10L25/18 , G10L19/06 , G10L21/038
Abstract: An apparatus for generating a frequency enhancement signal has: a signal generator for generating an enhancement signal from a core signal, the enhancement signal having an enhancement frequency range not included in the core signal, wherein a current time portion of the enhancement signal or the core signal has subband signals for a plurality of subbands; a controller for calculating the same smoothing information for the plurality of subband signals of the enhancement frequency range or the core signal, and wherein the signal generator is configured for smoothing the plurality of subband signals of the enhancement frequency range or the core signal using the same smoothing information.
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公开(公告)号：US10311892B2
公开(公告)日：2019-06-04
申请号：US15834260
申请日：2017-12-07
Inventor： Sascha Disch , Frederik Nagel , Ralf Geiger , Balaji Nagendran Thoshkahna , Konstantin Schmidt , Stefan Bayer , Christian Neukam , Bernd Edler , Christian Helmrich
IPC: G10L19/00 , G10L21/0388 , G10L19/008 , G10L19/025 , G10L19/03 , G10L19/02 , G10L19/022 , G10L19/032 , G10L19/06 , G10L25/06 , H04S1/00
Abstract: An apparatus for decoding an encoded audio signal, includes a spectral domain audio decoder for generating a first decoded representation of a first set of first spectral portions, the decoded representation having a first spectral resolution; a parametric decoder for generating a second decoded representation of a second set of second spectral portions having a second spectral resolution being lower than the first spectral resolution; a frequency regenerator for regenerating every constructed second spectral portion having the first spectral resolution using a first spectral portion and spectral envelope information for the second spectral portion; and a spectrum time converter for converting the first decoded representation and the reconstructed second spectral portion into a time representation.
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