Patents by Inventor Tobias Friedrich
Tobias Friedrich 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: 11929082Abstract: The present disclosure relates to the field audio coding, an in particular to an audio decoder having at least two decoding modes, and associated decoding methods and decoding software for such audio decoder. In one of the decoding modes, at least one dynamic audio object is mapped to a set of static audio objects, the set of static audio objects corresponding to a predefined speaker configuration. The present disclosure further relates to a corresponding audio encoder, and associated encoding methods and encoding software for such audio encoder.Type: GrantFiled: October 30, 2019Date of Patent: March 12, 2024Assignee: DOLBY INTERNATIONAL ABInventors: Tobias Friedrich, Heiko Purnhagen, Stanislaw Gorlow, Celine Merpillat
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Patent number: 11817108Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system configured to generate a bitstream indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system comprises a downmix processing unit configured to generate the downmix signal from a multi-channel input signal; wherein the downmix signal comprises m channels and wherein the multi-channel input signal comprises n channels; n, m being integers with m<n. Furthermore, the system comprises a parameter processing unit configured to determine the spatial metadata from the multi-channel input signal.Type: GrantFiled: October 28, 2022Date of Patent: November 14, 2023Assignee: DOLBY INTERNATIONAL ABInventors: Tobias Friedrich, Alexander Mueller, Karsten Linzmeier, Claus-Christian Spenger, Tobias R. Wagenblass
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Publication number: 20230123244Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system configured to generate a bitstream indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system comprises a downmix processing unit configured to generate the downmix signal from a multi-channel input signal; wherein the downmix signal comprises m channels and wherein the multi-channel input signal comprises n channels; n, m being integers with m<n. Furthermore, the system comprises a parameter processing unit configured to determine the spatial metadata from the multi-channel input signal.Type: ApplicationFiled: October 28, 2022Publication date: April 20, 2023Applicant: DOLBY INTERNATIONAL ABInventors: Tobias FRIEDRICH, Alexander MUELLER, Karsten LINZMEIER, Claus-Christian SPENGER, Tobias R. WAGENBLASS
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Patent number: 11488611Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system configured to generate a bitstream indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system comprises a downmix processing unit configured to generate the downmix signal from a multi-channel input signal; wherein the downmix signal comprises m channels and wherein the multi-channel input signal comprises n channels; n, m being integers with m<n. Furthermore, the system comprises a parameter processing unit configured to determine the spatial metadata from the multi-channel input signal.Type: GrantFiled: February 17, 2021Date of Patent: November 1, 2022Assignee: DOLBY INTERNATIONAL ABInventors: Tobias Friedrich, Alexander Mueller, Karsten Linzmeier, Claus-Christian Spenger, Tobias R. Wagenblass
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Publication number: 20220199101Abstract: Dialogue enhancement of an audio signal, comprising obtaining a set of time-varying parameters configured to estimate a dialogue component present in said audio signal, estimating the dialogue component from the audio signal, applying a compressor only to the estimated dialogue component, to generate a processed dialogue component, applying a user-determined gain to the processed dialogue component, to provide an enhanced dialogue component. The processing of the estimated dialogue may be performed on the decoder side or encoder side. The invention enables an improved dialogue enhancement.Type: ApplicationFiled: April 15, 2020Publication date: June 23, 2022Applicant: DOLBY INTERNATIONAL ABInventors: Stanislaw Gorlow, Leif Jonas Samuelsson, Holger Hoerich, Tobias Friedrich
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Patent number: 11264040Abstract: A method for rendering an audio output based on an audio data stream including M audio signals, side information including a series of reconstruction instances of a reconstruction matrix C and first timing data, the side information allowing reconstruction of N audio objects from the M audio signals, and object metadata defining spatial relationships between the N audio objects. The method includes generating a synchronized rendering matrix based on the object metadata, the first timing data, and information relating to a current playback system configuration, the synchronized rendering matrix having a rendering instance for each reconstruction instance, multiplying each reconstruction instance with a corresponding rendering instance to form a corresponding instance of an integrated rendering matrix, and applying the integrated rendering matrix to the audio signals in order to render an audio output.Type: GrantFiled: December 7, 2020Date of Patent: March 1, 2022Assignee: Dolby International ABInventors: Klaus Peichl, Tobias Friedrich, Robin Thesing, Heiko Purnhagen, Martin Wolters
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Publication number: 20220005484Abstract: The present disclosure relates to the field audio coding, an in particular to an audio decoder having at least two decoding modes, and associated decoding methods and decoding software for such audio decoder. In one of the decoding modes, at least one dynamic audio object is mapped to a set of static audio objects, the set of static audio objects corresponding to a predefined speaker configuration. The present disclosure further relates to a corresponding audio encoder, and associated encoding methods and encoding software for such audio encoder.Type: ApplicationFiled: October 30, 2019Publication date: January 6, 2022Applicant: DOLBY INTERNATIONAL ABInventors: Tobias FRIEDRICH, Heiko PURNHAGEN, Stanislaw GORLOW, Celine MERPILLAT
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Publication number: 20210249022Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system configured to generate a bitstream indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system comprises a downmix processing unit configured to generate the downmix signal from a multi-channel input signal; wherein the downmix signal comprises m channels and wherein the multi-channel input signal comprises n channels; n, m being integers with m<n. Furthermore, the system comprises a parameter processing unit configured to determine the spatial metadata from the multi-channel input signal.Type: ApplicationFiled: February 17, 2021Publication date: August 12, 2021Applicant: DOLBY INTERNATIONAL ABInventors: Tobias FRIEDRICH, Alexander MUELLER, Karsten LINZMEIER, Claus-Christian SPENGER, Tobias R. WAGENBLASS
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Patent number: 10990075Abstract: A system is provided for programming workpiece feature inspection operations for a coordinate measuring machine. The system includes a computer-aided design (CAD) file processing portion, a geometric relationship analyzer, an inspection motion path generation portion, and a user interface including an editable plan representation of a current workpiece feature inspection plan, a workpiece inspection program simulation portion configured to display a 3D view including geometric features and inspection operation representations, and a context sensitive menu portion. The context sensitive menu portion displays a context sensitive relational command menu that indicates a valid set of relational commands including relational feature or relational measurement commands operable to define a corresponding constructed feature or corresponding relational measurement operation to be included in the current workpiece feature inspection plan.Type: GrantFiled: September 27, 2016Date of Patent: April 27, 2021Assignees: Mitutoyo Corporation, Mitutoyo Europe GmbHInventors: Frank Uwe Madsen, Samuel Wu, Eric Yeh-Wei Tseo, Tobias Friedrich
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Publication number: 20210090580Abstract: A method for rendering an audio output based on an audio data stream including M audio signals, side information including a series of reconstruction instances of a reconstruction matrix C and first timing data, the side information allowing reconstruction of N audio objects from the M audio signals, and object metadata defining spatial relationships between the N audio objects. The method includes generating a synchronized rendering matrix based on the object metadata, the first timing data, and information relating to a current playback system configuration, the synchronized rendering matrix having a rendering instance for each reconstruction instance, multiplying each reconstruction instance with a corresponding rendering instance to form a corresponding instance of an integrated rendering matrix, and applying the integrated rendering matrix to the audio signals in order to render an audio output.Type: ApplicationFiled: December 7, 2020Publication date: March 25, 2021Applicant: DOLBY INTERNATIONAL ABInventors: Klaus PEICHL, Tobias FRIEDRICH, Robin THESING, Heiko PURNHAGEN, Martin WOLTERS
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Patent number: 10930291Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system configured to generate a bitstream indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system comprises a downmix processing unit configured to generate the downmix signal from a multi-channel input signal; wherein the downmix signal comprises m channels and wherein the multi-channel input signal comprises n channels; n, m being integers with m<n. Furthermore, the system comprises a parameter processing unit configured to determine the spatial metadata from the multi-channel input signal.Type: GrantFiled: May 1, 2020Date of Patent: February 23, 2021Assignee: Dolby International ABInventors: Tobias Friedrich, Alexander Mueller, Karsten Linzmeier, Claus-Christian Spenger, Tobias R. Wagenblass
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Patent number: 10923131Abstract: An error-concealing audio decoding method comprises: receiving a packet comprising a set of MDCT coefficients encoding a frame of time-domain samples of an audio signal; identifying the received packet as erroneous; generating estimated MDCT coefficients to replace the set of MDCT coefficients of the erroneous packet, based on corresponding MDCT coefficients associated with a received packet directly preceding the erroneous packet; assigning signs of a first subset of MDCT coefficients of the estimated MDCT coefficients, wherein the first subset comprises such MDCT coefficients that are associated with tonal-like spectral bins, to coincide with signs of corresponding MDCT coefficients of said preceding packet; randomly assigning signs of a second subset of MDCT coefficients of the estimated MDCT coefficients, wherein the second subset comprises MDCT coefficients associated with noise-like spectral bins; replacing the erroneous packet by a concealment packet containing the estimated MDCT coefficients and the sType: GrantFiled: September 16, 2019Date of Patent: February 16, 2021Assignee: Dolby International ABInventors: Arijit Biswas, Tobias Friedrich, Klaus Peichl
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Patent number: 10891962Abstract: A method for rendering an audio output based on an audio data stream including M audio signals, side information including a series of reconstruction instances of a reconstruction matrix C and first timing data, the side information allowing reconstruction of N audio objects from the M audio signals, and object metadata defining spatial relationships between the N audio objects. The method includes generating a synchronized rendering matrix based on the object metadata, the first timing data, and information relating to a current playback system configuration, the synchronized rendering matrix having a rendering instance for each reconstruction instance, multiplying each reconstruction instance with a corresponding rendering instance to form a corresponding instance of an integrated rendering matrix, and applying the integrated rendering matrix to the audio signals in order to render an audio output.Type: GrantFiled: March 6, 2018Date of Patent: January 12, 2021Assignee: Dolby International ABInventors: Klaus Peichl, Tobias Friedrich, Robin Thesing, Heiko Purnhagen, Martin Wolters
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Publication number: 20200321011Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system configured to generate a bitstream indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system comprises a downmix processing unit configured to generate the downmix signal from a multi-channel input signal; wherein the downmix signal comprises m channels and wherein the multi-channel input signal comprises n channels; n, m being integers with m<n. Furthermore, the system comprises a parameter processing unit configured to determine the spatial metadata from the multi-channel input signal.Type: ApplicationFiled: May 1, 2020Publication date: October 8, 2020Applicant: DOLBY INTERNATIONAL ABInventors: Tobias FRIEDRICH, Alexander MUELLER, Karsten LINZMEIER, Claus-Christian SPENGER, Tobias R. WAGENBLASS
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Patent number: 10643626Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system configured to generate a bitstream indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system comprises a downmix processing unit configured to generate the downmix signal from a multi-channel input signal; wherein the downmix signal comprises m channels and wherein the multi-channel input signal comprises n channels; n, m being integers with m<n. Furthermore, the system comprises a parameter processing unit configured to determine the spatial metadata from the multi-channel input signal.Type: GrantFiled: June 10, 2019Date of Patent: May 5, 2020Assignee: Dolby International ABInventors: Tobias Friedrich, Alexander Mueller, Karsten Linzmeier, Claus-Christian Spenger, Tobias R. Wagenblass
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Publication number: 20200013413Abstract: An error-concealing audio decoding method comprises: receiving a packet comprising a set of MDCT coefficients encoding a frame of time-domain samples of an audio signal; identifying the received packet as erroneous; generating estimated MDCT coefficients to replace the set of MDCT coefficients of the erroneous packet, based on corresponding MDCT coefficients associated with a received packet directly preceding the erroneous packet; assigning signs of a first subset of MDCT coefficients of the estimated MDCT coefficients, wherein the first subset comprises such MDCT coefficients that are associated with tonal-like spectral bins, to coincide with signs of corresponding MDCT coefficients of said preceding packet; randomly assigning signs of a second subset of MDCT coefficients of the estimated MDCT coefficients, wherein the second subset comprises MDCT coefficients associated with noise-like spectral bins; replacing the erroneous packet by a concealment packet containing the estimated MDCT coefficients and the sType: ApplicationFiled: September 16, 2019Publication date: January 9, 2020Applicant: DOLBY INTERNATIONAL ABInventors: Arijit BISWAS, Tobias FRIEDRICH, Klaus Peichl
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Publication number: 20200005801Abstract: A method for rendering an audio output based on an audio data stream including M audio signals, side information including a series of reconstruction instances of a reconstruction matrix C and first timing data, the side information allowing reconstruction of N audio objects from the M audio signals, and object metadata defining spatial relationships between the N audio objects. The method includes generating a synchronized rendering matrix based on the object metadata, the first timing data, and information relating to a current playback system configuration, the synchronized rendering matrix having a rendering instance for each reconstruction instance, multiplying each reconstruction instance with a corresponding rendering instance to form a corresponding instance of an integrated rendering matrix, and applying the integrated rendering matrix to the audio signals in order to render an audio output.Type: ApplicationFiled: March 6, 2018Publication date: January 2, 2020Applicant: DOLBY INTERNATIONAL ABInventors: Klaus PEICHL, Tobias FRIEDRICH, Robin THESING, Heiko PURNHAGEN, Martin WOLTERS
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Publication number: 20190348052Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system configured to generate a bitstream indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system comprises a downmix processing unit configured to generate the downmix signal from a multi-channel input signal; wherein the downmix signal comprises m channels and wherein the multi-channel input signal comprises n channels; n, m being integers with m<n. Furthermore, the system comprises a parameter processing unit configured to determine the spatial metadata from the multi-channel input signal.Type: ApplicationFiled: June 10, 2019Publication date: November 14, 2019Applicant: DOLBY INTERNATIONAL ABInventors: TOBIAS FRIEDRICH, ALEXANDER MUELLER, KARSTEN LINZMEIER, CLAUS-CHRISTIAN SPENGER, TOBIAS R. WAGENBLASS
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Patent number: 10424305Abstract: An error-concealing audio decoding method comprises: receiving a packet comprising a set of MDCT coefficients encoding a frame of time-domain samples of an audio signal; identifying the received packet as erroneous; generating estimated MDCT coefficients to replace the set of MDCT coefficients of the erroneous packet, based on corresponding MDCT coefficients associated with a received packet directly preceding the erroneous packet; assigning signs of a first subset of MDCT coefficients of the estimated MDCT coefficients, wherein the first subset comprises such MDCT coefficients that are associated with tonal-like spectral bins, to coincide with signs of corresponding MDCT coefficients of said preceding packet; randomly assigning signs of a second subset of MDCT coefficients of the estimated MDCT coefficients, wherein the second subset comprises MDCT coefficients associated with noise-like spectral bins; replacing the erroneous packet by a concealment packet containing the estimated MDCT coefficients and the sType: GrantFiled: December 8, 2015Date of Patent: September 24, 2019Assignee: Dolby International ABInventors: Arijit Biswas, Tobias Friedrich, Klaus Peichl
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Patent number: RE48258Abstract: 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: December 17, 2018Date of Patent: October 13, 2020Assignee: Dolby International ABInventors: Holger Hoerich, Tobias Friedrich