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公开(公告)号：US12142284B2
公开(公告)日：2024-11-12
申请号：US18220677
申请日：2023-07-11
Inventor： Sascha Disch , Frederik Nagel , Ralf Geiger , Balaji Nagendran Thoshkahna , Konstantin Schmidt , Stefan Bayer , Christian Neukam , Bernd Edler , Christian Helmrich
IPC: G10L19/00 , G10L19/008 , G10L19/02 , G10L19/022 , G10L19/025 , G10L19/03 , G10L19/032 , G10L19/06 , G10L21/0388 , G10L25/06 , G10L25/18 , G10L25/21 , H04S1/00
Abstract: An apparatus for generating a decoded two-channel signal, comprising: a parametric decoder for providing parametric data for a second set of second spectral portions and a two-channel identification identifying for a second spectral portion of the second set of second spectral portions either a first two-channel representation for the second spectral portion of the second set of second spectral portions or a second two-channel representation for the second spectral portion of the second set of second spectral portions, the second two-channel representation being different from the first two-channel representation; and a frequency regenerator for regenerating the second spectral portion of the second set of second spectral portions depending on a first spectral portion of a first set of first spectral portions, the parametric data for the second spectral portion of the second set of second spectral portions and the two-channel identification for the second spectral portion of the second set of second spectral portions to acquire a regenerated second spectral portion of the second set of second spectral portions.
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公开(公告)号：US12112765B2
公开(公告)日：2024-10-08
申请号：US16802397
申请日：2020-02-26
Inventor： Bernd Edler , Christian Helmrich , Max Neuendorf , Benjamin Schubert
IPC: G10L19/032 , G10L19/02 , H04N19/547 , H04N19/635
CPC classification number: G10L19/032 , G10L19/02 , H04N19/547 , H04N19/635
Abstract: An encoder for encoding an audio signal is configured to encode the audio signal in a transform domain or filter-bank domain, is configured to determine spectral coefficients of the audio signal for a current frame and at least one previous frame, and is configured to selectively apply predictive encoding to a plurality of individual spectral coefficients or groups of spectral coefficients which are separated by at least one spectral coefficient.
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公开(公告)号：USRE50158E1
公开(公告)日：2024-10-01
申请号：US17845580
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：USRE50015E1
公开(公告)日：2024-06-18
申请号：US17845435
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：US11996106B2
公开(公告)日：2024-05-28
申请号：US17339270
申请日：2021-06-04
Inventor： Sascha Disch , Frederik Nagel , Ralf Geiger , Balaji Nagendran Thoshkahna , Konstantin Schmidt , Stefan Bayer , Christian Neukam , Bernd Edler , Christian Helmrich
IPC: G10L19/008 , G10L19/02 , G10L19/022 , G10L19/025 , G10L19/03 , G10L19/032 , G10L19/06 , G10L21/0388 , G10L25/06 , G10L25/18 , G10L25/21 , H04S1/00
CPC classification number: G10L19/008 , G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L19/022 , G10L19/025 , G10L19/03 , G10L19/032 , G10L19/06 , G10L21/0388 , G10L25/06 , G10L25/18 , G10L25/21 , H04S1/007 , G10L19/02
Abstract: An apparatus decodes an encoded audio signal. The apparatus includes a spectral domain audio decoder that generates a decoded representation of a set of spectral portions, the decoded representation being spectral prediction residual values. A frequency regenerator generates a reconstructed spectral portion using a portion of the same set spectral portions. The reconstructed spectral portion also includes spectral prediction residual values. An inverse prediction filter is configured using prediction filter information included in the encoded audio signal and performs an inverse prediction over frequency using the spectral prediction residual values.
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Patent Agency Ranking
公开(公告)号：US11521628B2
公开(公告)日：2022-12-06
申请号：US16283668
申请日：2019-02-22
Inventor： Sascha Disch , Franz Reutelhuber , Jan Buethe , Markus Multrus , Bernd Edler
IPC: G10L19/04 , G10L19/008 , G10L19/16 , G10L19/02 , G10L21/038 , G10L21/0232 , H04L65/60
Abstract: An apparatus for encoding an audio signal includes: a core encoder for core encoding first audio data in a first spectral band; a parametric coder for parametrically coding second audio data in a second spectral band being different from the first spectral band, wherein the parametric coder includes: an analyzer for analyzing first audio data in the first spectral band to obtain a first analysis result and for analyzing second audio data in the second spectral band to obtain a second analysis result; a compensator for calculating a compensation value using the first analysis result and the second analysis result; and a parameter calculated for calculating a parameter from the second audio data in the second spectral band using the compensation value.
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公开(公告)号：US11049506B2
公开(公告)日：2021-06-29
申请号：US16417471
申请日：2019-05-20
Inventor： Sascha Disch , Frederik Nagel , Ralf Geiger , Balaji Nagendran Thoshkahna , Konstantin Schmidt , Stefan Bayer , Christian Neukam , Bernd Edler , Christian Helmrich
IPC: G10L19/008 , G10L21/0388 , 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 being spectral prediction residual values; a frequency regenerator for generating a reconstructed second spectral portion using a first spectral portion of the first set of first spectral portions, wherein the reconstructed second spectral portion additionally includes spectral prediction residual values; and an inverse prediction filter for performing an inverse prediction over frequency using the spectral residual values for the first set of first spectral portions and the reconstructed second spectral portion using prediction filter information included in the encoded audio signal.
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公开(公告)号：US10818304B2
公开(公告)日：2020-10-27
申请号：US14470551
申请日：2014-08-27
Inventor： Sascha Disch , Juergen Herre , Bernd Edler , Frederik Nagel
Abstract: A decoder for decoding an encoded audio signal to obtain a phase-adjusted audio signal is provided. The decoder has a decoding unit and a phase adjustment unit. The decoding unit is adapted to decode the encoded audio signal to obtain a decoded audio signal. The phase adjustment unit is adapted to adjust the decoded audio signal to obtain the phase-adjusted audio signal. The phase adjustment unit is configured to receive control information depending on a vertical phase coherence of the encoded audio signal. Moreover, the phase adjustment unit is adapted to adjust the decoded audio signal based on the control information.
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公开(公告)号：US10573334B2
公开(公告)日：2020-02-25
申请号：US15002370
申请日：2016-01-20
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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公开(公告)号：US10354662B2
公开(公告)日：2019-07-16
申请号：US14830453
申请日：2015-08-19
Inventor： Christian Helmrich , Jeremie Lecomte , Goran Markovic , Markus Schnell , Bernd Edler , Stefan Reuschl
IPC: G10L19/00 , G10L19/025 , H04N19/172 , H04N19/176 , H04N19/44 , G10L19/022 , G10L19/02
Abstract: An apparatus for generating an encoded signal includes: a window sequence controller for generating a window sequence information for windowing an audio or image signal, the window sequence information indicating a first window for generating a first frame of spectral values, a second window function and at least one third window function for generating a second frame of spectral values, wherein the first window function, the second window function and the one or more third window functions overlap within a multi-overlap region; a preprocessor for windowing a second block of samples corresponding to the second window function and the at least one third window functions using an auxiliary window function to acquire a second block of windowed samples, a spectrum converter for applying an aliasing-introducing transform; and a processor for processing the first frame and the second frame to acquire encoded frames of the audio or image signal.
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