Patents by Inventor Holger Hoerich
Holger Hoerich 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: 9619199Abstract: In an audio encoder, for audio content received in a source audio format, default gains are generated based on a default dynamic range compression (DRC) curve, and non-default gains are generated for a non-default gain profile. Based on the default gains and non-default gains, differential gains are generated. An audio signal comprising the audio content, the default DRC curve, and differential gains is generated. In an audio decoder, the default DRC curve and the differential gains are identified from the audio signal. Default gains are re-generated based on the default DRC curve. Based on the combination of the re-generated default gains and the differential gains, operations are performed on the audio content extracted from the audio signal.Type: GrantFiled: April 14, 2016Date of Patent: April 11, 2017Assignees: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Jeroen Koppens, Jeffrey Riedmiller, Kristofer Kjoerling, Alexander Groeschel, Holger Hoerich, Alan J. Seefeldt
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Patent number: 9530424Abstract: An encoder (250) comprises a core encoder (252) for encoding a low frequency component of the audio signal at the signal sampling rate (fs_in) and a spectral band replication-referred to as SBR-encoding unit (153, 254) for determining a plurality of SBR parameters. A plurality of the SBR parameters is determined such that a high frequency component of the audio signal can be approximated based on the low frequency component of the audio signal and the plurality of SBR parameters. A multiplexer (155) is adapted to generate an overall bitstream comprising the core encoded bitstream, the plurality of SBR parameters and an indication of one or more SBR encoder settings applied by the SBR encoder (153, 254); wherein the generated overall bitstream does not indicate that the core encoded bitstream has been determined by encoding the low frequency component at the signal sampling rate (fs_in).Type: GrantFiled: November 12, 2012Date of Patent: December 27, 2016Assignee: Dolby International ABInventors: Holger Hoerich, Tobias Friedrich
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Publication number: 20160358616Abstract: The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilising high frequency reconstruction (HFR). It utilises a detection mechanism on the encoder side to assess what parts of the spectrum will not be correctly reproduced by the HFR method in the decoder. Information on this is efficiently coded and sent to the decoder, where it is combined with the output of the HFR unit.Type: ApplicationFiled: August 18, 2016Publication date: December 8, 2016Inventors: Kristofer KJOERLING, Per EKSTRAND, Holger HOERICH
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Patent number: 9431020Abstract: The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilizing high frequency reconstruction (HFR). It utilizes a detection mechanism on the encoder side to assess what parts of the spectrum will not be correctly reproduced by the HFR method in the decoder. Information on this is efficiently coded and sent to the decoder, where it is combined with the output of the HFR unit.Type: GrantFiled: April 18, 2013Date of Patent: August 30, 2016Assignee: DOLBY INTERNATIONAL ABInventors: Kristofer Kjoerling, Per Ekstrand, Holger Hoerich
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Publication number: 20160231983Abstract: In an audio encoder, for audio content received in a source audio format, default gains are generated based on a default dynamic range compression (DRC) curve, and non-default gains are generated for a non-default gain profile. Based on the default gains and non-default gains, differential gains are generated. An audio signal comprising the audio content, the default DRC curve, and differential gains is generated. In an audio decoder, the default DRC curve and the differential gains are identified from the audio signal. Default gains are re-generated based on the default DRC curve. Based on the combination of the re-generated default gains and the differential gains, operations are performed on the audio content extracted from the audio signal.Type: ApplicationFiled: April 14, 2016Publication date: August 11, 2016Applicants: DOLBY LABORATORIES LICENSING CORPORATION, DOLBY INTERNATIONAL ABInventors: Jeroen KOPPENS, Jeffrey RIEDMILLER, Kristofer KJOERLING, Alexander GROESCHEL, Holger HOERICH, Alan J. SEEFELDT
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Publication number: 20160232912Abstract: A method performed in an audio decoder for reconstructing an original audio signal having a lowband portion and a highband portion is disclosed. The method includes receiving an encoded audio signal and extracting reconstruction parameters from the encoded audio signal. The method further includes decoding the encoded audio signal with a core audio decoder to obtain a decoded lowband portion and regenerating the highband portion based at least in part on a cross over frequency and the decoded lowband portion to obtain a regenerated highband portion. The method also includes creating a synthetic sinusoid with a level based at least in part on a spectral envelope value for the particular subband and a noise floor value for the particular subband and adding the synthetic sinusoid to the regenerated highband portion in the particular frequency band specified by the location information.Type: ApplicationFiled: April 20, 2016Publication date: August 11, 2016Applicant: DOLBY INTERNATIONAL ABInventors: Kristofer KJOERLING, Per EKSTRAND, Holger HOERICH
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Publication number: 20160227339Abstract: In an audio encoder, for audio content received in a source audio format, default gains are generated based on a default dynamic range compression (DRC) curve, and non-default gains are generated for a non-default gain profile. Based on the default gains and non-default gains, differential gains are generated. An audio signal comprising the audio content, the default DRC curve, and differential gains is generated. In an audio decoder, the default DRC curve and the differential gains are identified from the audio signal. Default gains are re-generated based on the default DRC curve. Based on the combination of the re-generated default gains and the differential gains, operations are performed on the audio content extracted from the audio signal.Type: ApplicationFiled: April 14, 2016Publication date: August 4, 2016Applicants: DOLBY LABORATORIES LICENSING CORPORATION, DOLBY INTERNATIONAL ABInventors: Jeroen KOPPENS, Jeffrey RIEDMILLER, Kristofer KJOERLING, Alexander GROESCHEL, Holger HOERICH, Alan J. SEEFELDT
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Publication number: 20160197590Abstract: In an audio encoder, for audio content received in a source audio format, default gains are generated based on a default dynamic range compression (DRC) curve, and non-default gains are generated for a non-default gain profile. Based on the default gains and non-default gains, differential gains are generated. An audio signal comprising the audio content, the default DRC curve, and differential gains is generated. In an audio decoder, the default DRC curve and the differential gains are identified from the audio signal. Default gains are re-generated based on the default DRC curve. Based on the combination of the re-generated default gains and the differential gains, operations are performed on the audio content extracted from the audio signal.Type: ApplicationFiled: September 8, 2014Publication date: July 7, 2016Applicants: DOLBY LABORATORIES LICENSING CORPORATION, DOLBY INTERNATIONAL ABInventors: Jeroen KOPPENS, Jeffrey RIEDMILLER, Kristofer KJOERLING, Alexander GROESCHEL, Holger HOERICH, Alan J. SEEFELDT
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Publication number: 20160196831Abstract: The present document relates to the design of anti-aliasing and/or anti-imaging filters for resamplers using rational resampling factors. In particular, the present document relates to a method for implementing such anti-aliasing and/or anti-imaging filters with reduced computational complexity. In addition, the present document relates to further aspects of an audio encoding and decoding system, such as the phase relation between the channels of a multi-channel audio signal and/or the structure of the bitstream of an encoded audio signal.Type: ApplicationFiled: September 10, 2014Publication date: July 7, 2016Applicants: Dolby Laboratories Licensing Corporation, DOLBY INTERNATIONAL ABInventors: Alexander GROESCHEL, Jenns POPP, Martin WOLTERS, Jeffrey RIEDMILLER, Michael WARD, Karl Jonas ROEDEN, Holger HOERICH, Karsten LINZMEIER, Tobias FRIEDRICH
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Patent number: 9111524Abstract: The present document relates to methods and systems for encoding and decoding multimedia files. In particular, the present document relates to methods and systems for encoding and decoding a plurality of audio tracks for seamless playback of the plurality of audio tracks. A method for encoding an audio signal comprising a first and a directly following second audio track for seamless and individual playback of the first and second audio tracks is described. The first and second audio tracks comprise a first and second plurality of audio frames, respectively.Type: GrantFiled: November 29, 2012Date of Patent: August 18, 2015Assignee: Dolby International ABInventor: Holger Hoerich
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Publication number: 20140365231Abstract: An encoder (250) comprises a core encoder (252) for encoding a low frequency component of the audio signal at the signal sampling rate (fs_in) and a spectral band replication-referred to as SBR-encoding unit (153, 254) for determining a plurality of SBR parameters. A plurality of the SBR parameters is determined such that a high frequency component of the audio signal can be approximated based on the low frequency component of the audio signal and the plurality of SBR parameters. A multiplexer (155) is adapted to generate an overall bitstream comprising the core encoded bitstream, the plurality of SBR parameters and an indication of one or more SBR encoder settings applied by the SBR encoder (153, 254); wherein the generated overall bitstream does not indicate that the core encoded bitstream has been determined by encoding the low frequency component at the signal sampling rate (fs_in).Type: ApplicationFiled: November 12, 2012Publication date: December 11, 2014Applicant: DOLBY INTERNATIONAL ABInventors: Holger Hoerich, Tobias Friedrich
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Patent number: 8885818Abstract: The present document relates to techniques for authentication of data streams. Specifically, the present document relates to the insertion of identifiers into a data stream, such as a Dolby Pulse, AAC or HE AAC bitstream, and the authentication and verification of the data stream based on such identifiers. A method and system for encoding a data stream comprising a plurality of data frames is described. The method comprises the step of generating a cryptographic value of a number N of successive data frames and configuration information, wherein the configuration information comprises information for rendering the data stream. The method then inserts the cryptographic value into the data stream subsequent to the N successive data frames.Type: GrantFiled: August 6, 2010Date of Patent: November 11, 2014Assignee: Dolby International ABInventors: Reinhold Boehm, Alexander Groeschel, Holger Hoerich, Daniel Homm, Wolfgang A. Schildbach, Michael Schug, Oliver Watzke, Martin Wolters, Thomas Ziegler
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Patent number: 8447621Abstract: The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilizing high frequency reconstruction (HFR). It utilizes a detection mechanism on the encoder side to assess what parts of the spectrum will not be correctly reproduced by the HFR method in the decoder. Information on this is efficiently coded and sent to the decoder, where it is combined with the output of the HFR unit.Type: GrantFiled: August 9, 2011Date of Patent: May 21, 2013Assignee: Dolby International ABInventors: Kristofer Kjörling, Per Ekstrand, Holger Hörich
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Publication number: 20120128151Abstract: The present invention relates to techniques for authentication of data streams. Specifically, the invention relates to the insertion of identifiers into a data stream, such as a Dolby Pulse, AAC or HE AAC bitstream, and the authentication and verification of the data stream based on such identifiers. A method and system for encoding a data stream comprising a plurality of data frames is described. The method comprises the step of generating a cryptographic value of a number N of successive data frames and configuration information, wherein the configuration information comprises information for rendering the data stream. The method then inserts the cryptographic value into the data stream subsequent to the N successive data frames.Type: ApplicationFiled: August 6, 2010Publication date: May 24, 2012Applicant: DOLBY INTERNATIONAL ABInventors: Reinhold Boehm, Alexander Groeschel, Holger Hoerich, Daniel Homm, Wolfgang A. Schildbach, Michael Schug, Oliver Watzke, Martin Wolters, Thomas Ziegler
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Patent number: 8112284Abstract: The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilizing high frequency reconstruction (HFR). It utilizes a detection mechanism on the encoder side to assess what parts of the spectrum will not be correctly reproduced by the HFR method in the decoder. Information on this is efficiently coded and sent to the decoder, where it is combined with the output of the HFR unit.Type: GrantFiled: November 19, 2008Date of Patent: February 7, 2012Assignee: Coding Technologies ABInventors: Kristofer Kjörling, Per Ekstrand, Holger Hörich
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Publication number: 20110295608Abstract: The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilising high frequency reconstruction (HFR). It utilises a detection mechanism on the encoder side to assess what parts of the spectrum will not be correctly reproduced by the HFR method in the decoder. Information on this is efficiently coded and sent to the decoder, where it is combined with the output of the HFR unit.Type: ApplicationFiled: August 9, 2011Publication date: December 1, 2011Inventors: Kristofer Kjörling, Per Ekstrand, Holger Hörich
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Patent number: 8019612Abstract: The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilizing high frequency reconstruction (HFR). It utilizes a detection mechanism on the encoder side to assess what parts of the spectrum will not be correctly reproduced by the HFR method in the decoder. Information on this is efficiently coded and sent to the decoder, where it is combined with the output of the HFR unit.Type: GrantFiled: June 29, 2009Date of Patent: September 13, 2011Assignee: Coding Technologies ABInventors: Kristofer Kjörling, Per Ekstrand, Holger Hörich
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Patent number: 7936785Abstract: An apparatus for generating a data stream having a series of segments using data organized in subsequent data frames, a data frame having more important and less important data. It comprises a packetiser for packetising data from a data frame into the series of segments having a first segment and a second segment, where the packetiser is operative to packetise the data of the frame so that a starting point of the more important data coincides with a starting point of the first segment and an information block adder for adding a first information block to the first segment.Type: GrantFiled: December 15, 2006Date of Patent: May 3, 2011Assignees: Coding Technologies AB, SK Telecom Co., Ltd.Inventors: Andreas Ehret, Holger Hoerich, Michael Schug, Andreas Schneider
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Patent number: 7809018Abstract: An apparatus for generating a data stream having a series of segments using data organized in subsequent data frames. The apparatus comprises a packetiser for packetising data from a data frame into the series of segments having a first segment and a second segment, where the second segment has interpretable data entities and has a data entity fragment, the data entity fragment including only a part of an interpretable data entity preceding an interpretable data entity. The apparatus comprises furthermore an information block adder for adding an information block associated with the second segment, the information block indicating an entry point into the second segment, the entry point indicating a start of the interpretable data entity following the data entity fragment.Type: GrantFiled: December 15, 2006Date of Patent: October 5, 2010Assignees: Coding Technologies AB, SK Telecom Co., Ltd.Inventors: Andreas Ehret, Holger Hoerich, Michael Schug, Andreas Schneider
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Publication number: 20090326929Abstract: The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilising high frequency reconstruction (HFR). It utilises a detection mechanism on the encoder side to assess what parts of the spectrum will not be correctly reproduced by the HFR method in the decoder. Information on this is efficiently coded and sent to the decoder, where it is combined with the output of the HFR unit.Type: ApplicationFiled: June 29, 2009Publication date: December 31, 2009Inventors: Kristofer Kjörling, Per Ekstrand, Holger Hörich