Patents by Inventor Stefan Bayer
Stefan Bayer 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).
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Publication number: 20260163514Abstract: A method for heating and cooling a component includes determining a holding time based on a first test duration. The method further includes repeatedly carrying out a method cycle, where the method cycle includes heating the component according to a first temperature gradient to a defined maximum temperature; holding the component at the defined maximum temperature for the holding time; and cooling the component according to a second temperature gradient to a defined minimum temperature, where the defined minimum temperature is lower than the defined maximum temperature.Type: ApplicationFiled: April 17, 2025Publication date: June 11, 2026Inventors: Stefan Bayer, Matthias Groß, Sebastian Kiesner
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Patent number: 12586593Abstract: Apparatus for encoding a plurality of audio objects, having: an object parameter calculator configured for calculating, for one or more frequency bins of a plurality of frequency bins related to a time frame, parameter data for at least two relevant audio objects, wherein a number of the at least two relevant audio objects is lower than a total number of the plurality of audio objects, and an output interface for outputting an encoded audio signal having information on the parameter data for the at least two relevant audio objects for the one or more frequency bins.Type: GrantFiled: April 6, 2023Date of Patent: March 24, 2026Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Andrea Eichenseer, Srikanth Korse, Stefan Bayer, Fabian Küch, Oliver Thiergart, Guillaume Fuchs, Dominik Weckbecker, Jürgen Herre, Markus Multrus
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Patent number: 12573411Abstract: An audio encoder has a first information sink oriented encoding branch such as a spectral domain encoding branch, a second information source or SNR oriented encoding branch such as an LPC-domain encoding branch, and a switch for switching between the first and second encoding branches, the second encoding branch having a converter into a specific domain different from the spectral domain such as an LPC analysis stage generating an excitation signal, and the second encoding branch having a specific domain coding branch such as LPC domain processing branch, and a specific spectral domain coding branch such as LPC spectral domain processing branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder has a first domain decoder, a second domain decoder, and a third domain decoder as well as two cascaded switches for switching between the decoders.Type: GrantFiled: August 16, 2023Date of Patent: March 10, 2026Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Bernhard Grill, Roch Lefebvre, Bruno Bessette, Jimmy Lapierre, Philippe Gournay, Redwan Salami, Stefan Bayer, Guillaume Fuchs, Stefan Geyersberger, Ralf Geiger, Johannes Hilpert, Ulrich Kraemer, Jérémie Lecomte, Markus Multrus, Max Neuendorf, Harald Popp, Nikolaus Rettelbach
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Patent number: 12574700Abstract: An apparatus for generating a sound field description using an input signal having a mono-signal or a multi-channel signal includes: an input signal analyzer for analyzing the input signal to derive direction data and diffuseness data; a low-order components generator for generating a low-order sound field description from the input signal up to a predetermined order and mode; a mid-order components generator for generating a mid-order sound field description above the predetermined order or at the predetermined order and above the predetermined mode and below or at a high order, wherein the mid-order sound field description comprises a direct contribution and a diffuse contribution; and a high-order components generator for generating a high-order sound field description comprising a sound field component above the high order using a synthesis of at least one direct portion, wherein the high-order sound field description comprises a direct contribution only.Type: GrantFiled: August 13, 2024Date of Patent: March 10, 2026Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Guillaume Fuchs, Oliver Thiergart, Srikanth Korse, Stefan Döhla, Markus Multrus, Fabian Küch, Alexandre Bouthéon, Andrea Eichenseer, Stefan Bayer
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Patent number: 12548577Abstract: An apparatus for processing an encoded audio scene representing a sound field related to a virtual listener position, the encoded audio scene including information on a transport signal and a first set of parameters related to the virtual listener position includes a parameter converter for converting the first set of parameters into a second set of parameters related to a channel representation including two or more channels for a reproduction at predefined spatial positions for the two or more channels, and an output interface for generating a processed audio scene using the second set of parameters and the information on the transport signal.Type: GrantFiled: April 3, 2023Date of Patent: February 10, 2026Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Franz Reutelhuber, Guillaume Fuchs, Markus Multrus, Eleni Fotopoulou, Stefan Bayer, Jan Büthe, Stefan Döhla
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Publication number: 20260031094Abstract: An audio processor for providing a processed audio signal representation on the basis of an input audio signal representation performs a plurality of processing steps, in order to provide the processed audio signal representation on the basis of the input audio signal representation. The audio processor performs a time scale modification on one or more intermediate audio signals, which are provided by a first processing, in order to obtain one or more time-scale-modified intermediate audio signals, and the audio processor performs a second processing, which follows the first processing, on the basis of the one or more time-scale-modified intermediate audio signals. An audio processing system, a method and a computer program are also described.Type: ApplicationFiled: October 3, 2025Publication date: January 29, 2026Inventors: Stefan BAYER, Stefan DÖHLA, Kacper SAGNOWSKI, Markus MULTRUS, Bernd EDLER, Anika TREFFEHN, Karin PREBECK, Dominik HÄUSSLER, Andrea EICHENSEER, Franz REUTELHUBER
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Patent number: 12537011Abstract: An audio scene encoder for encoding an audio scene, the audio scene having at least two component signals, has: a core encoder for core encoding the at least two component signals, wherein the core encoder is configured to generate a first encoded representation for a first portion of the at least two component signals, and to generate a second encoded representation for a second portion of the at least two component signals, a spatial analyzer for analyzing the audio scene to derive one or more spatial parameters or one or more spatial parameter sets for the second portion; and an output interface for forming the encoded audio scene signal, the encoded audio scene signal having the first encoded representation, the second encoded representation, and the one or more spatial parameters or one or more spatial parameter sets for the second portion.Type: GrantFiled: June 7, 2023Date of Patent: January 27, 2026Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Guillaume Fuchs, Stefan Bayer, Markus Multrus, Oliver Thiergart, Alexandre Bouthéon, Jürgen Herre, Florin Ghido, Wolfgang Jaegers, Fabian Küch
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Patent number: 12494213Abstract: An apparatus for encoding a plurality of audio objects and related metadata indicating direction information on the plurality of audio objects has: a downmixer for downmixing the plurality of audio objects to obtain one or more transport channels; a transport channel encoder for encoding one or more transport channels to obtain one or more encoded transport channels; and an output interface for outputting an encoded audio signal comprising the one or more encoded transport channels, wherein the downmixer is configured to downmix the plurality of audio objects in response to the direction information on the plurality of audio objects.Type: GrantFiled: April 5, 2023Date of Patent: December 9, 2025Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Andrea Eichenseer, Srikanth Korse, Stefan Bayer, Fabian Küch, Oliver Thiergart, Guillaume Fuchs, Dominik Weckbecker, Jürgen Herre, Markus Multrus
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Patent number: RE50650Abstract: An apparatus for generating a bandwidth extended signal from an input signal includes a patch generator and a combiner. The input signal is represented for first and second bands by first and second resolution data, respectively, the second resolution being lower than the first. The patch generator generates first and second patches from the first band of the input signal according to first and second patching algorithms, respectively. A spectral density of the second patch generated using the second patching algorithm is higher than a spectral density of a first patch generated using the first patching algorithm. The combiner combines both patches and the first band of the input signal to obtain the bandwidth extended signal. The apparatus scales the input signal according to the first and second patching algorithms or scales the first and second patches, so that the bandwidth extended signal fulfills a spectral envelope criterion.Type: GrantFiled: November 22, 2023Date of Patent: October 21, 2025Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Sascha Disch, Max Neuendorf, Stefan Bayer, Marc Gayer, Markus Lohwasser, Nikolaus Rettelbach, Ulrich Kraemer
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Patent number: RE50655Abstract: An apparatus for generating a bandwidth extended signal from an input signal includes a patch generator and a combiner. The input signal is represented for first and second bands by first and second resolution data, respectively, the second resolution being lower than the first. The patch generator generates first and second patches from the first band of the input signal according to first and second patching algorithms, respectively. A spectral density of the second patch generated using the second patching algorithm is higher than a spectral density of a first patch generated using the first patching algorithm. The combiner combines both patches and the first band of the input signal to obtain the bandwidth extended signal. The apparatus scales the input signal according to the first and second patching algorithms or scales the first and second patches, so that the bandwidth extended signal fulfills a spectral envelope criterion.Type: GrantFiled: November 22, 2023Date of Patent: November 4, 2025Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Sascha Disch, Max Neuendorf, Stefan Bayer, Marc Gayer, Markus Lohwasser, Nikolaus Rettelbach, Ulrich Kraemer
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Patent number: RE50676Abstract: An apparatus for generating a synthesis audio signal using a patching control signal has a first converter, a spectral domain patch generator, a high frequency reconstruction manipulator and a combiner. The first converter is configured for converting a time portion of an audio signal into a spectral representation. The spectral domain patch generator is configured for performing a plurality of different spectral domain patching algorithms, wherein each patching algorithm generates a modified spectral representation having spectral components in an upper frequency band derived from corresponding spectral components in a core frequency band of the audio signal.Type: GrantFiled: June 23, 2022Date of Patent: November 25, 2025Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Markus Multrus, Jérémie Lecomte, Stefan Bayer, Guillaume Fuchs, Johannes Hilpert, Julien Robilliard
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Patent number: RE50692Abstract: An apparatus for generating a synthesis audio signal using a patching control signal has a first converter, a spectral domain patch generator, a high frequency reconstruction manipulator and a combiner. The first converter is configured for convert- ing a time portion of an audio signal into a spectral represen- tation. The spectral domain patch generator is configured for performing a plurality of different spectral domain patching algorithms, wherein each patching algorithm generates a modified spectral representation having spectral components in an upper frequency band derived from corresponding spec- tral components in a core frequency band of the audio signal.Type: GrantFiled: June 23, 2022Date of Patent: December 9, 2025Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Markus Multrus, Jérémie Lecomte, Stefan Bayer, Guillaume Fuchs, Johannes Hilpert, Julien Robilliard
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Patent number: RE50693Abstract: An apparatus for generating a synthesis audio signal using a patching control signal has a first converter, a spectral domain patch generator, a high frequency reconstruction manipulator and a combiner. The first converter is configured for converting a time portion of an audio signal into a spectral representation. The spectral domain patch generator is configured for performing a plurality of different spectral domain patching algorithms, wherein each patching algorithm generates a modified spectral representation having spectral components in an upper frequency band derived from corresponding spectral components in a core frequency band of the audio signal.Type: GrantFiled: June 23, 2022Date of Patent: December 9, 2025Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Markus Multrus, Jérémie Lecomte, Stefan Bayer, Guillaume Fuchs, Johannes Hilpert, Julien Robilliard
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Patent number: RE50710Abstract: An apparatus for generating a synthesis audio signal using a patching control signal has a first converter, a spectral domain patch generator, a high frequency reconstruction manipulator and a combiner. The first converter is configured for converting a time portion of an audio signal into a spectral representation. The spectral domain patch generator is configured for performing a plurality of different spectral domain patching algorithms, wherein each patching algorithm generates a modified spectral representation having spectral components in an upper frequency band derived from corresponding spectral components in a core frequency band of the audio signal.Type: GrantFiled: June 23, 2022Date of Patent: December 23, 2025Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Markus Multrus, Jérémie Lecomte, Stefan Bayer, Guillaume Fuchs, Johannes Hilpert, Julien Robilliard
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Patent number: RE50718Abstract: An apparatus for generating a bandwidth extended signal from an input signal includes a patch generator and a combiner. The input signal is represented for first and second bands by first and second resolution data, respectively, the second resolution being lower than the first. The patch generator generates first and second patches from the first band of the input signal according to first and second patching algorithms, respectively. A spectral density of the second patch generated using the second patching algorithm is higher than a spectral density of a first patch generated using the first patching algorithm. The combiner combines both patches and the first band of the input signal to obtain the bandwidth extended signal. The apparatus scales the input signal according to the first and second patching algorithms or scales the first and second patches, so that the bandwidth extended signal fulfills a spectral envelope criterion.Type: GrantFiled: November 22, 2023Date of Patent: December 30, 2025Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Sascha Disch, Max Neuendorf, Stefan Bayer, Marc Gayer, Markus Lohwasser, Nikolaus Rettelbach, Ulrich Kraemer
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Patent number: RE50767Abstract: An apparatus for generating a synthesis audio signal using a patching control signal has a first converter, a spectral domain patch generator, a high frequency reconstruction manipulator and a combiner. The first converter is configured for converting a time portion of an audio signal into a spectral representation. The spectral domain patch generator is configured for performing a plurality of different spectral domain patching algorithms, wherein each patching algorithm generates a modified spectral representation having spectral components in an upper frequency band derived from corresponding spectral components in a core frequency band of the audio signal.Type: GrantFiled: June 23, 2022Date of Patent: January 27, 2026Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Markus Multrus, Jérémie Lecomte, Stefan Bayer, Guillaume Fuchs, Johannes Hilpert, Julien Robilliard
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Patent number: RE50780Abstract: An apparatus for generating a synthesis audio signal using a patching control signal has a first converter, a spectral domain patch generator, a high frequency reconstruction manipulator and a combiner. The first converter is configured for converting a time portion of an audio signal into a spectral representation. The spectral domain patch generator is configured for performing a plurality of different spectral domain patching algorithms, wherein each patching algorithm generates a modified spectral representation having spectral components in an upper frequency band derived from corresponding spectral components in a core frequency band of the audio signal.Type: GrantFiled: June 23, 2022Date of Patent: February 3, 2026Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Markus Multrus, Jérémie Lecomte, Stefan Bayer, Guillaume Fuchs, Johannes Hilpert, Julien Robilliard
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Patent number: RE50738Abstract: An apparatus for generating a bandwidth extended signal from an input signal includes a patch generator and a combiner. The input signal is represented for first and second bands by first and second resolution data, respectively, the second resolution being lower than the first. The patch generator generates first and second patches from the first band of the input signal according to first and second patching algorithms, respectively. A spectral density of the second patch generated using the second patching algorithm is higher than a spectral density of a first patch generated using the first patching algorithm. The combiner combines both patches and the first band of the input signal to obtain the bandwidth extended signal. The apparatus scales the input signal according to the first and second patching algorithms or scales the first and second patches, so that the bandwidth extended signal fulfills a spectral envelope criterion.Type: GrantFiled: November 22, 2023Date of Patent: January 6, 2026Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Sascha Disch, Max Neuendorf, Stefan Bayer, Marc Gayer, Markus Lohwasser, Nikolaus Rettelbach, Ulrich Kraemer
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Patent number: RE50739Abstract: An apparatus for generating a bandwidth extended signal from an input signal includes a patch generator and a combiner. The input signal is represented for first and second bands by first and second resolution data, respectively, the second resolution being lower than the first. The patch generator generates first and second patches from the first band of the input signal according to first and second patching algorithms, respectively. A spectral density of the second patch generated using the second patching algorithm is higher than a spectral density of a first patch generated using the first patching algorithm. The combiner combines both patches and the first band of the input signal to obtain the bandwidth extended signal. The apparatus scales the input signal according to the first and second patching algorithms or scales the first and second patches, so that the bandwidth extended signal fulfills a spectral envelope criterion.Type: GrantFiled: November 22, 2023Date of Patent: January 6, 2026Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Sascha Disch, Max Neuendorf, Stefan Bayer, Marc Gayer, Markus Lohwasser, Nikolaus Rettelbach, Ulrich Kraemer
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Patent number: RE50740Abstract: An apparatus for generating a bandwidth extended signal from an input signal includes a patch generator and a combiner. The input signal is represented for first and second bands by first and second resolution data, respectively, the second resolution being lower than the first. The patch generator generates first and second patches from the first band of the input signal according to first and second patching algorithms, respectively. A spectral density of the second patch generated using the second patching algorithm is higher than a spectral density of a first patch generated using the first patching algorithm. The combiner combines both patches and the first band of the input signal to obtain the bandwidth extended signal. The apparatus scales the input signal according to the first and second patching algorithms or scales the first and second patches, so that the bandwidth extended signal fulfills a spectral envelope criterion.Type: GrantFiled: November 22, 2023Date of Patent: January 6, 2026Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Sascha Disch, Max Neuendorf, Stefan Bayer, Marc Gayer, Markus Lohwasser, Nikolaus Rettelbach, Ulrich Kraemer