Patents by Inventor Dirk Mahne
Dirk Mahne 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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Patent number: 11664040Abstract: An apparatus for processing an audio signal includes an audio signal analyzer and a filter. The audio signal analyzer is configured to analyze an audio signal to determine a plurality of noise suppression filter values for a plurality of bands of the audio signal, wherein the analyzer is configured to determine a noise suppression filter value so that a noise suppression filter value is greater than or equal to a minimum noise suppression filter value and so that the minimum noise suppression value depends on a characteristic of the audio signal. The filter is configured for filtering the audio signal, wherein the filter is adjusted based on the noise suppression filter values.Type: GrantFiled: March 23, 2021Date of Patent: May 30, 2023Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Anthony Lombard, Bernhard Birzer, Dirk Mahne, Edwin Mabande, Fabian Kuech, Emanuel Habets, Paolo Annibale
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Publication number: 20220150657Abstract: Apparatus for processing a sound field representation related to a defined reference point or defined listening orientation for the sound field representation including: a sound field processor for processing the sound field representation using a deviation of a target listening position from the defined reference point or a target listening orientation from the defined listening orientation to obtain a processed sound field description which, when rendered, provides an impression of the sound field representation at the target listening position being different from the defined reference point or for the target listening orientation being different from the defined listening orientation, or for processing the sound field representation using a spatial filter to obtain the processed sound field description which, when rendered, provides an impression of a spatially filtered sound field description, the sound field processor being configured to process the sound field representation to apply the deviation or tType: ApplicationFiled: January 25, 2022Publication date: May 12, 2022Inventors: Oliver THIERGART, Alexander NIEDERLEITNER, Emanuel HABETS, Moritz WILD, Axel PLINGE, Achim KUNTZ, Alexandre BOUTHÉON, Dirk MAHNE, Fabian KÜCH
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Patent number: 11272305Abstract: An apparatus for generating a sound field description having a representation of sound field components, including a direction determiner for determining one or more sound directions for each time-frequency tile of a plurality of time-frequency tiles of a plurality of microphone signals; a spatial basis function evaluator for evaluating, for each time-frequency tile of the plurality of time-frequency tiles, one or more spatial basis functions using the one or more sound directions; and a sound field component calculator for calculating, for each time-frequency tile of the plurality of time-frequency tiles, one or more sound field components corresponding to the one or more spatial basis functions evaluated using the one or more sound directions and a reference signal for a corresponding time-frequency tile, the reference signal being derived from one or more microphone signals of the plurality of microphone signals.Type: GrantFiled: May 13, 2020Date of Patent: March 8, 2022Inventors: Emanuel Habets, Oliver Thiergart, Fabian Küch, Alexander Niederleitner, Affan-Hasan Khan, Dirk Mahne
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Publication number: 20210233551Abstract: An apparatus for processing an audio signal includes an audio signal analyzer and a filter. The audio signal analyzer is configured to analyze an audio signal to determine a plurality of noise suppression filter values for a plurality of bands of the audio signal, wherein the analyzer is configured to determine a noise suppression filter value so that a noise suppression filter value is greater than or equal to a minimum noise suppression filter value and so that the minimum noise suppression value depends on a characteristic of the audio signal. The filter is configured for filtering the audio signal, wherein the filter is adjusted based on the noise suppression filter values.Type: ApplicationFiled: March 23, 2021Publication date: July 29, 2021Inventors: Anthony LOMBARD, Bernhard BIRZER, Dirk MAHNE, Edwin MABANDE, Fabian KUECH, Emanuel HABETS, Paolo ANNIBALE
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Patent number: 11056128Abstract: An apparatus for processing an audio signal includes an audio signal analyzer and a filter. The audio signal analyzer is configured to analyze an audio signal to determine a plurality of noise suppression filter values for a plurality of bands of the audio signal, wherein the analyzer is configured to determine a noise suppression filter value so that a noise suppression filter value is greater than or equal to a minimum noise suppression filter value and so that the minimum noise suppression value depends on a characteristic of the audio signal. The filter is configured for filtering the audio signal, wherein the filter is adjusted based on the noise suppression filter values.Type: GrantFiled: April 11, 2019Date of Patent: July 6, 2021Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Anthony Lombard, Bernhard Birzer, Dirk Mahne, Edwin Mabande, Fabian Kuech, Emanuel Habets, Paolo Annibale
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Publication number: 20200275227Abstract: An apparatus for generating a sound field description having a representation of sound field components, including a direction determiner for determining one or more sound directions for each time-frequency tile of a plurality of time-frequency tiles of a plurality of microphone signals; a spatial basis function evaluator for evaluating, for each time-frequency tile of the plurality of time-frequency tiles, one or more spatial basis functions using the one or more sound directions; and a sound field component calculator for calculating, for each time-frequency tile of the plurality of time-frequency tiles, one or more sound field components corresponding to the one or more spatial basis functions evaluated using the one or more sound directions and a reference signal for a corresponding time-frequency tile, the reference signal being derived from one or more microphone signals of the plurality of microphone signals.Type: ApplicationFiled: May 13, 2020Publication date: August 27, 2020Inventors: Emanuel HABETS, Oliver THIERGART, Fabian KÜCH, Alexander NIEDERLEITNER, Affan-Hasan KHAN, Dirk MAHNE
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Patent number: 10694306Abstract: An apparatus for generating a sound field description having a representation of sound field components, including a direction determiner for determining one or more sound directions for each time-frequency tile of a plurality of time-frequency tiles of a plurality of microphone signals; a spatial basis function evaluator for evaluating, for each time-frequency tile of the plurality of time-frequency tiles, one or more spatial basis functions using the one or more sound directions; and a sound field component calculator for calculating, for each time-frequency tile of the plurality of time-frequency tiles, one or more sound field components corresponding to the one or more spatial basis functions evaluated using the one or more sound directions and a reference signal for a corresponding time-frequency tile, the reference signal being derived from one or more microphone signals of the plurality of microphone signals.Type: GrantFiled: May 13, 2019Date of Patent: June 23, 2020Assignee: Fraunhofer-Gesellschaft zur Förderung der angenwandten Forschung e.V.Inventors: Emanuel Habets, Oliver Thiergart, Fabian Küch, Alexander Niederleitner, Affan-Hasan Khan, Dirk Mahne
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Patent number: 10524072Abstract: An apparatus for generating a sound field description having a representation of sound field components, including a direction determiner for determining one or more sound directions for each time-frequency tile of a plurality of time-frequency tiles of a plurality of microphone signals; a spatial basis function evaluator for evaluating, for each time-frequency tile of the plurality of time-frequency tiles, one or more spatial basis functions using the one or more sound directions; and a sound field component calculator for calculating, for each time-frequency tile of the plurality of time-frequency tiles, one or more sound field components corresponding to the one or more spatial basis functions evaluated using the one or more sound directions and a reference signal for a corresponding time-frequency tile, the reference signal being derived from one or more microphone signals of the plurality of microphone signals.Type: GrantFiled: March 22, 2018Date of Patent: December 31, 2019Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Emanuel Habets, Oliver Thiergart, Fabian Küch, Alexander Niederleitner, Affan-Hasan Khan, Dirk Mahne
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Patent number: 10454454Abstract: A partitioned block frequency domain adaptive filter device includes a frequency domain adaptive filter configured for filtering a frequency domain representation of a time domain input signal depending on a set of filter coefficients consisting of a plurality of blocks of filter coefficients in order to produce a filtered signal; a plurality of parallel arranged filter update blocks; wherein each of the filter update blocks includes an adaptation module configured for executing an adaptation sequence including the steps of calculating an approximation of a constrained gradient update for the filter coefficients of the respective block of filter coefficients, and calculating a cumulative error introduced on the unconstrained gradient update; wherein each of the filter update blocks includes a correction module configured for executing a correction sequence including the steps of calculating a corrected constrained gradient update for the filter coefficients of the respective block of filter coefficients.Type: GrantFiled: January 23, 2018Date of Patent: October 22, 2019Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Maria Luis Valero, Emanuel Habets, Edwin Mabande, Anthony Lombard, Dirk Mahne, Bernhard Birzer
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Publication number: 20190274000Abstract: An apparatus for generating a sound field description having a representation of sound field components, including a direction determiner for determining one or more sound directions for each time-frequency tile of a plurality of time-frequency tiles of a plurality of microphone signals; a spatial basis function evaluator for evaluating, for each time-frequency tile of the plurality of time-frequency tiles, one or more spatial basis functions using the one or more sound directions; and a sound field component calculator for calculating, for each time-frequency tile of the plurality of time-frequency tiles, one or more sound field components corresponding to the one or more spatial basis functions evaluated using the one or more sound directions and a reference signal for a corresponding time-frequency tile, the reference signal being derived from one or more microphone signals of the plurality of microphone signals.Type: ApplicationFiled: May 13, 2019Publication date: September 5, 2019Inventors: Emanuel HABETS, Oliver THIERGART, Fabian KÜCH, Alexander NIEDERLEITNER, Affan-Hasan KHAN, Dirk MAHNE
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Publication number: 20190267022Abstract: An apparatus for processing an audio signal includes an audio signal analyzer and a filter. The audio signal analyzer is configured to analyze an audio signal to determine a plurality of noise suppression filter values for a plurality of bands of the audio signal, wherein the analyzer is configured to determine a noise suppression filter value so that a noise suppression filter value is greater than or equal to a minimum noise suppression filter value and so that the minimum noise suppression value depends on a characteristic of the audio signal. The filter is configured for filtering the audio signal, wherein the filter is adjusted based on the noise suppression filter values.Type: ApplicationFiled: April 11, 2019Publication date: August 29, 2019Inventors: Anthony Lombard, Bernhard Birzer, Dirk Mahne, Edwin Mabande, Fabian Kuech, Emanuel Habets, Paolo Annibale
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Patent number: 10327088Abstract: A spatial audio processor for providing spatial parameters based on an acoustic input signal has a signal characteristics determiner and a controllable parameter estimator. The signal characteristics determiner is configured to determine a signal characteristic of the acoustic input signal. The controllable parameter estimator for calculating the spatial parameters for the acoustic input signal in accordance with a variable spatial parameter calculation rule is configured to modify the variable spatial parameter calculation rule in accordance with the determined signal characteristic.Type: GrantFiled: January 20, 2017Date of Patent: June 18, 2019Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Oliver Thiergart, Fabian Kuech, Richard Schultz-Amling, Markus Kallinger, Giovanni Del Galdo, Achim Kuntz, Dirk Mahne, Ville Pulkki, Mikko-Ville Laitinen
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Publication number: 20190098425Abstract: An apparatus for generating a sound field description having a representation of sound field components, including a direction determiner for determining one or more sound directions for each time-frequency tile of a plurality of time-frequency tiles of a plurality of microphone signals; a spatial basis function evaluator for evaluating, for each time-frequency tile of the plurality of time-frequency tiles, one or more spatial basis functions using the one or more sound directions; and a sound field component calculator for calculating, for each time-frequency tile of the plurality of time-frequency tiles, one or more sound field components corresponding to the one or more spatial basis functions evaluated using the one or more sound directions and a reference signal for a corresponding time-frequency tile, the reference signal being derived from one or more microphone signals of the plurality of microphone signals.Type: ApplicationFiled: March 22, 2018Publication date: March 28, 2019Inventors: Emanuel HABETS, Oliver THIERGART, Fabian KÜCH, Alexander NIEDERLEITNER, Affan-Hasan KHAN, Dirk MAHNE
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Publication number: 20180226954Abstract: A partitioned block frequency domain adaptive filter device includes a frequency domain adaptive filter configured for filtering a frequency domain representation of a time domain input signal depending on a set of filter coefficients consisting of a plurality of blocks of filter coefficients in order to produce a filtered signal; a plurality of parallel arranged filter update blocks; wherein each of the filter update blocks includes an adaptation module configured for executing an adaptation sequence including the steps of calculating an approximation of a constrained gradient update for the filter coefficients of the respective block of filter coefficients, and calculating a cumulative error introduced on the unconstrained gradient update; wherein each of the filter update blocks includes a correction module configured for executing a correction sequence including the steps of calculating a corrected constrained gradient update for the filter coefficients of the respective block of filter coefficients.Type: ApplicationFiled: January 23, 2018Publication date: August 9, 2018Inventors: Maria Luis Valero, Emanuel Habets, Edwin Mabande, Anthony Lombard, Dirk Mahne, Bernhard Birzer
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Publication number: 20170134876Abstract: A spatial audio processor for providing spatial parameters based on an acoustic input signal has a signal characteristics determiner and a controllable parameter estimator. The signal characteristics determiner is configured to determine a signal characteristic of the acoustic input signal. The controllable parameter estimator for calculating the spatial parameters for the acoustic input signal in accordance with a variable spatial parameter calculation rule is configured to modify the variable spatial parameter calculation rule in accordance with the determined signal characteristic.Type: ApplicationFiled: January 20, 2017Publication date: May 11, 2017Inventors: Oliver THIERGART, Fabian KUECH, Richard SCHULTZ-AMLING, Markus KALLINGER, Giovanni DEL GALDO, Achim KUNTZ, Dirk MAHNE, Ville PULKKI, Mikko-Ville LAITINEN
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Patent number: 9626974Abstract: A spatial audio processor for providing spatial parameters based on an acoustic input signal has a signal characteristics determiner and a controllable parameter estimator. The signal characteristics determiner is configured to determine a signal characteristic of the acoustic input signal. The controllable parameter estimator for calculating the spatial parameters for the acoustic input signal in accordance with a variable spatial parameter calculation rule is configured to modify the variable spatial parameter calculation rule in accordance with the determined signal characteristic.Type: GrantFiled: September 27, 2012Date of Patent: April 18, 2017Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Oliver Thiergart, Fabian Kuech, Richard Schultz-Amling, Markus Kallinger, Giovanni Del Galdo, Achim Kuntz, Dirk Mahne, Ville Pulkki, Mikko-Ville Laitinen
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Patent number: 9396731Abstract: An apparatus for generating an audio output signal to simulate a recording of a virtual microphone at a configurable virtual position in an environment includes a sound events position estimator and an information computation module. The former is adapted to estimate a sound source position indicating a position of a sound source in the environment, wherein the sound events position estimator is adapted to estimate the sound source position based on first and second direction information provided by first and second real spatial microphones, respectively, located at first and second real microphone positions in the environment, respectively. The information computation module is adapted to generate the audio output signal based on a first recorded audio input signal, on the first real microphone position, on the virtual position of the virtual microphone, and on the sound source position.Type: GrantFiled: May 29, 2013Date of Patent: July 19, 2016Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Juergen Herre, Fabian Kuech, Markus Kallinger, Giovanni Del Galdo, Oliver Thiergart, Dirk Mahne, Achim Kuntz, Michael Kratschmer, Alexandra Craciun
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Patent number: 9196257Abstract: An apparatus for converting a first parametric spatial audio signal representing a first listening position or a first listening orientation in a spatial audio scene to a second parametric spatial audio signal representing a second listening position or a second listening orientation is described, the apparatus including: a spatial audio signal modification unit adapted to modify the first parametric spatial audio signal dependent on a change of the first listening position or the first listening orientation so as to obtain the second parametric spatial audio signal, wherein the second listening position or the second listening orientation corresponds to the first listening position or the first listening orientation changed by the change.Type: GrantFiled: June 14, 2012Date of Patent: November 24, 2015Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Richard Schultz-Amling, Fabian Kuech, Markus Kallinger, Giovanni Del Galdo, Oliver Thiergart, Dirk Mahne, Achim Kuntz
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Patent number: 8705319Abstract: An apparatus for resolving an ambiguity from a DOA estimate includes a DOA estimate analyzer for analyzing the DOA estimate to obtain a plurality of ambiguous analysis parameters by using a bias information, the bias information representing a relation between a biased and an unbiased DOA estimate, and an ambiguity resolver for resolving the ambiguity in the plurality of ambiguous analysis parameters to obtain a non-ambiguous resolved parameter.Type: GrantFiled: February 25, 2013Date of Patent: April 22, 2014Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Markus Kallinger, Giovanni Del Galdo, Fabian Küch, Oliver Thiergart, Dirk Mahne, Achim Kuntz, Richard Schultz-Amling
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Publication number: 20130259243Abstract: An apparatus for generating an audio output signal to simulate a recording of a virtual microphone at a configurable virtual position in an environment includes a sound events position estimator and an information computation module. The former is adapted to estimate a sound source position indicating a position of a sound source in the environment, wherein the sound events position estimator is adapted to estimate the sound source position based on first and second direction information provided by first and second real spatial microphones, respectively, located at first and second real microphone positions in the environment, respectively. The information computation module is adapted to generate the audio output signal based on a first recorded audio input signal, on the first real microphone position, on the virtual position of the virtual microphone, and on the sound source position.Type: ApplicationFiled: May 29, 2013Publication date: October 3, 2013Inventors: Juergen HERRE, Fabian KUECH, Markus KALLINGER, Giovanni DEL GALDO, Oliver THIERGART, Dirk MAHNE, Achim KUNTZ, Michael KRATSCHMER, Alexandra CRACIUN