Patents by Inventor Sascha Disch

Sascha Disch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220270619
    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.
    Type: Application
    Filed: March 3, 2022
    Publication date: August 25, 2022
    Inventors: Sascha DISCH, Frederik NAGEL, Ralf GEIGER, Balaji Nagendran THOSHKAHNA, Konstantin SCHMIDT, Stefan BAYER, Christian NEUKAM, Bernd EDLER, Christian HELMRICH
  • Patent number: 11423914
    Abstract: A decoder for generating an audio output signal having one or more audio output channels is provided, having a receiving interface for receiving an audio input signal having a plurality of audio object signals, for receiving loudness information on the audio object signals, and for receiving rendering information indicating whether one or more of the audio object signals shall be amplified or attenuated, further having a signal processor for generating the one or more audio output channels of the audio output signal, configured to determine a loudness compensation value depending on the loudness information and depending on the rendering information, and configured to generate the one or more audio output channels of the audio output signal from the audio input signal depending on the rendering information and depending on the loudness compensation value. One or more by-pass audio object signals are employed for generating the audio output signal. Moreover, an encoder is provided.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: August 23, 2022
    Inventors: Jouni Paulus, Sascha Disch, Harald Fuchs, Bernhard Grill, Oliver Hellmuth, Adrian Murtaza, Falko Ridderbusch, Leon Terentiv
  • Patent number: 11410668
    Abstract: An audio encoder for encoding an audio signal includes: a first encoding processor for encoding a first audio signal portion in a frequency domain, wherein the first encoding processor includes: a time frequency converter for converting the first audio signal portion into a frequency domain representation having spectral lines up to a maximum frequency of the first audio signal portion; a spectral encoder for encoding the frequency domain representation; a second encoding processor for encoding a second different audio signal portion in the time domain; a cross-processor for calculating, from the encoded spectral representation of the first audio signal portion, initialization data of the second encoding processor, so that the second encoding processing is initialized to encode the second audio signal portion immediately following the first audio signal portion in time in the audio signal; a controller configured for analyzing the audio signal and for determining, which portion of the audio signal is the firs
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: August 9, 2022
    Inventors: Sascha Disch, Martin Dietz, Markus Multrus, Guillaume Fuchs, Emmanuel Ravelli, Matthias Neusinger, Markus Schnell, Benjamin Schubert, Bernhard Grill
  • Patent number: 11381925
    Abstract: A multi-channel decorrelator for providing a plurality of decorrelated signals on the basis of a plurality of decorrelator input signals is configured to premix a first set of N decorrelator input signals into a second set of K decorrelator input signals, wherein K<N. The multi-channel decorrelator is configured to provide a first set of K? decorrelator output signals on the basis of the second set of K decorrelator input signals. The multi-channel decorrelator is further configured to upmix the first set of K? decorrelator output signals into a second set of N? decorrelator output signals, wherein N?>K?. The multi-channel decorrelator can be used in a multi-channel audio decoder. A multi-channel audio encoder provides complexity control information for the multi-channel decorrelator.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: July 5, 2022
    Assignee: Fraunhofer-Gesellschaft zur Foerderang der angewandten Forschung e.V.
    Inventors: Sascha Disch, Harald Fuchs, Oliver Hellmuth, Juergen Herre, Adrian Murtaza, Jouni Paulus, Falko Ridderbusch, Leon Terentiv
  • Patent number: 11373666
    Abstract: Apparatus for post-processing an audio signal, including: a converter for converting the audio signal into a time-frequency representation; a transient location estimator for estimating a location in time of a transient portion using the audio signal or the time-frequency representation; and a signal manipulator for manipulating the time-frequency representation, wherein the signal manipulator is configured to reduce or eliminate a pre-echo in the time-frequency representation at a location in time before the transient location or to perform a shaping of the time-frequency representation at the transient location to amplify an attack of the transient portion.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: June 28, 2022
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Sascha Disch, Christian Uhle, Patrick Gampp, Daniel Richter, Oliver Hellmuth, Jürgen Herre, Peter Prokein, Antonios Karampourniotis, Julia Havenstein
  • Publication number: 20220167102
    Abstract: A multi-channel decorrelator for providing a plurality of decorrelated signals on the basis of a plurality of decorrelator input signals is configured to premix a first set of N decorrelator input signals into a second set of K decorrelator input signals, wherein K<N. The multi-channel decorrelator is configured to provide a first set of K? decorrelator output signals on the basis of the second set of K decorrelator input signals. The multi-channel decorrelator is further configured to upmix the first set of K? decorrelator output signals into a second set of N? decorrelator output signals, wherein N?>K?. The multi-channel decorrelator can be used in a multi-channel audio decoder. A multi-channel audio encoder provides complexity control information for the multi-channel decorrelator.
    Type: Application
    Filed: August 27, 2021
    Publication date: May 26, 2022
    Inventors: Sascha DISCH, Harald FUCHS, Oliver HELLMUTH, Juergen HERRE, Adrian MURTAZA, Jouni PAULUS, Falko RIDDERBUSCH, Leon TERENTIV
  • Patent number: 11341975
    Abstract: An apparatus for decoding an encoded multichannel signal includes: a base channel decoder for decoding an encoded base channel to obtain a decoded base channel; a decorrelation filter for filtering at least a portion of the decoded base channel to obtain a filling signal; and a multichannel processor for performing a multichannel processing using a spectral representation of the decoded base channel and a spectral representation of the filling signal, wherein the decorrelation filter is a broad band filter and the multichannel processor is configured to apply a narrow band processing to the spectral representation of the decoded base channel and the spectral representation of the filling signal.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: May 24, 2022
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Jan Büthe, Franz Reutelhuber, Sascha Disch, Guillaume Fuchs, Markus Multrus, Ralf Geiger
  • Publication number: 20220148606
    Abstract: An apparatus for generating an enhanced signal from an input signal, wherein the enhanced signal has spectral values for an enhancement spectral region, the spectral values for the enhancement spectral regions not being contained in the input signal, includes a mapper for mapping a source spectral region of the input signal to a target region in the enhancement spectral region, the source spectral region including a noise-filling region; and a noise filler configured for generating first noise values for the noise-filling region in the source spectral region of the input signal and for generating second noise values for a noise region in the target region, wherein the second noise values are decorrelated from the first noise values or for generating second noise values for a noise region in the target region, wherein the second noise values are decorrelated from first noise values in the source region.
    Type: Application
    Filed: January 19, 2022
    Publication date: May 12, 2022
    Inventors: Sascha Disch, Ralf Geiger, Andreas Niedermeier, Matthias Neusinger, Konstantin Schmidt, Stephan Wilde, Benjamin Schubert, Christian Neukam
  • Patent number: 11330386
    Abstract: An apparatus for generating one or more audio output channels is provided. The apparatus includes a parameter processor for calculating output channel mixing information and a downmix processor for generating the one or more audio output channels. The downmix processor is configured to receive an audio transport signal including one or more audio transport channels, wherein two or more audio object signals are mixed within the audio transport signal, and wherein the number of the one or more audio transport channels is smaller than the number of the two or more audio object signals. The audio transport signal depends on a first mixing rule and on a second mixing rule. The first mixing rule indicates how to mix the two or more audio object signals to obtain a plurality of premixed channels. Moreover, the second mixing rule indicates how to mix the plurality of premixed channels.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: May 10, 2022
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Sascha Disch, Harald Fuchs, Oliver Hellmuth, Juergen Herre, Adrian Murtaza, Jouni Paulus, Falko Ridderbusch, Leon Terentiv
  • Publication number: 20220139407
    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
    Type: Application
    Filed: January 14, 2022
    Publication date: May 5, 2022
    Inventors: Sascha DISCH, Frederik NAGEL, Ralf GEIGER, Balaji Nagendran THOSHKAHNA, Konstantin SCHMIDT, Stefan BAYER, Christian NEUKAM, Bernd EDLER, Christian HELMRICH
  • Publication number: 20220139406
    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.
    Type: Application
    Filed: January 13, 2022
    Publication date: May 5, 2022
    Inventors: Sascha DISCH, Guillaume FUCHS, Emmanuel RAVELLI, Christian NEUKAM, Konstantin SCHMIDT, Conrad BENNDORF, Andreas NIEDERMEIER, Benjamin SCHUBERT, Ralf GEIGER
  • Publication number: 20220122617
    Abstract: There are disclosed several examples of encoding and decoding technique. In particular, an audio synthesizer for generating a synthesis signal from a downmix signal includes: an input interface for receiving the downmix signal, the downmix signal having a number of downmix channels and side information, the side information including channel level and correlation information of an original signal, the original signal having a number of original channels; and a synthesis processor for generating, according to at least one mixing rule, the synthesis signal using: channel level and correlation information of the original signal; and covariance information associated with the downmix signal.
    Type: Application
    Filed: December 14, 2021
    Publication date: April 21, 2022
    Inventors: Alexandre BOUTHÉON, Guillaume FUCHS, Markus MULTRUS, Fabian KÜCH, Oliver THIERGART, Stefan BAYER, Sascha DISCH, Jürgen HERRE
  • Publication number: 20220122621
    Abstract: There are disclosed several examples of encoding and decoding technique. In particular, an audio synthesizer for generating a synthesis signal from a downmix signal, includes: an input interface for receiving the downmix signal, the downmix signal having a number of downmix channels and side information, the side information including channel level and correlation information of an original signal, the original signal having a number of original channels; and a synthesis processor for generating, according to at least one mixing rule, the synthesis signal using: channel level and correlation information of the original signal; and covariance information associated with the downmix signal.
    Type: Application
    Filed: December 14, 2021
    Publication date: April 21, 2022
    Inventors: Alexandre BOUTHÉON, Guillaume FUCHS, Markus MULTRUS, Fabian KÜCH, Oliver THIERGART, Stefan BAYER, Sascha DISCH, Jürgen HERRE
  • Publication number: 20220108707
    Abstract: There are disclosed several examples of encoding and decoding technique. In particular, an audio synthesizer for generating a synthesis signal from a downmix signal, includes: an input interface for receiving the downmix signal, the downmix signal having a number of downmix channels and side information, the side information including channel level and correlation information of an original signal, the original signal having a number of original channels; and a synthesis processor for generating, according to at least one mixing rule, the synthesis signal using: channel level and correlation information of the original signal; and covariance information associated with the downmix signal.
    Type: Application
    Filed: December 14, 2021
    Publication date: April 7, 2022
    Inventors: Alexandre BOUTHÉON, Guillaume FUCHS, Markus MULTRUS, Fabian KÜCH, Oliver THIERGART, Stefan BAYER, Sascha DISCH, Jürgen HERRE
  • Patent number: 11289104
    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.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: March 29, 2022
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Sascha Disch, Frederik Nagel, Ralf Geiger, Balaji Nagendran Thoshkahna, Konstantin Schmidt, Stefan Bayer, Christian Neukam, Bernd Edler, Christian Helmrich
  • Publication number: 20220093112
    Abstract: A schematic block diagram of an audio encoder for encoding a multichannel audio signal is shown. The audio encoder includes a linear prediction domain encoder, a frequency domain encoder, and a controller for switching between the linear prediction domain encoder and the frequency domain encoder. The controller is configured such that a portion of the multichannel signal is represented either by an encoded frame of the linear prediction domain encoder or by an encoded frame of the frequency domain encoder. The linear prediction domain encoder includes a downmixer for downmixing the multichannel signal to obtain a downmixed signal. The linear prediction domain encoder further includes a linear prediction domain core encoder for encoding the downmix signal and furthermore, the linear prediction domain encoder includes a first joint multichannel encoder for generating first multichannel information from the multichannel signal.
    Type: Application
    Filed: August 24, 2021
    Publication date: March 24, 2022
    Inventors: Sascha DISCH, Guillaume FUCHS, Emmanuel RAVELLI, Christian NEUKAM, Konstantin SCHMIDT, Conrad BENNDORF, Andreas NIEDERMEIER, Benjamin SCHUBERT, Ralf GEIGER
  • Publication number: 20220093113
    Abstract: An apparatus for decoding an encoded multichannel signal includes: a base channel decoder for decoding an encoded base channel to obtain a decoded base channel; a decorrelation filter for filtering at least a portion of the decoded base channel to obtain a filling signal; and a multichannel processor for performing a multichannel processing using a spectral representation of the decoded base channel and a spectral representation of the filling signal, wherein the decorrelation filter is a broad band filter and the multichannel processor is configured to apply a narrow band processing to the spectral representation of the decoded base channel and the spectral representation of the filling signal.
    Type: Application
    Filed: December 7, 2021
    Publication date: March 24, 2022
    Inventors: Jan BÜTHE, Franz REUTELHUBER, Sascha DISCH, Guillaume FUCHS, Markus MULTRUS, Ralf GEIGER
  • Publication number: 20220076685
    Abstract: An audio decoder for providing a decoded audio information on the basis of an encoded audio information includes a linear-prediction-domain decoder configured to provide a first decoded audio information on the basis of an audio frame encoded in a linear prediction domain, a frequency domain decoder configured to provide a second decoded audio information on the basis of an audio frame encoded in a frequency domain, and a transition processor. The transition processor is configured to obtain a zero-input-response of a linear predictive filtering, wherein an initial state of the linear predictive filtering is defined depending on the first decoded audio information and the second decoded audio information, and modify the second decoded audio information depending on the zero-input-response, to obtain a smooth transition between the first and the modified second decoded audio information.
    Type: Application
    Filed: September 20, 2021
    Publication date: March 10, 2022
    Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Emmanuel Ravelli, Guillaume Fuchs, Sascha Disch, Markus Multrus, Grzegorz Pietrzyk, Benjamin Schubert
  • Publication number: 20220068284
    Abstract: A downmixer for downmixing at least two channels of a multichannel signal having the two or more channels includes: a processor for calculating a partial downmix signal from the at least two channels; a complementary signal calculator for calculating a complementary signal from the multichannel signal, the complementary signal being different from the partial downmix signal; and an adder for adding the partial downmix signal and the complementary signal to obtain a downmix signal of the multichannel signal.
    Type: Application
    Filed: October 14, 2021
    Publication date: March 3, 2022
    Inventors: Christian BORSS, Bernd EDLER, Guillaume FUCHS, Jan BUETHE, Sascha DISCH, Florin GHIDO, Stefan BAYER, Markus MULTRUS
  • Patent number: 11264042
    Abstract: An apparatus for generating an enhanced signal from an input signal, wherein the enhanced signal has spectral values for an enhancement spectral region, the spectral values for the enhancement spectral regions not being contained in the input signal, includes a mapper for mapping a source spectral region of the input signal to a target region in the enhancement spectral region, the source spectral region including a noise-filling region; and a noise filler configured for generating first noise values for the noise-filling region in the source spectral region of the input signal and for generating second noise values for a noise region in the target region, wherein the second noise values are decorrelated from the first noise values or for generating second noise values for a noise region in the target region, wherein the second noise values are decorrelated from first noise values in the source region.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: March 1, 2022
    Inventors: Sascha Disch, Ralf Geiger, Andreas Niedermeier, Matthias Neusinger, Konstantin Schmidt, Stephan Wilde, Benjamin Schubert, Christian Neukam