Patents by Inventor Leif Jonas Samuelsson
Leif Jonas Samuelsson 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: 20240135940Abstract: A method for modifying object reconstruction information, comprising obtaining a set of N spatial audio objects, each spatial audio object including an audio signal and spatial metadata, obtaining an audio presentation representing the N spatial audio objects, obtaining object reconstruction information configured to reconstruct the N spatial audio objects from the audio presentation, applying the reconstruction information to the audio presentation to form a set of N reconstructed spatial audio objects, using a first rendering configuration, rendering the N spatial audio objects to obtain a first rendered presentation, and rendering the N reconstructed spatial audio objects to obtain a second rendered presentation, and modifying the reconstruction information based on a difference between the first rendered presentation and the second rendered presentation, thereby forming modified reconstruction information.Type: ApplicationFiled: February 9, 2022Publication date: April 25, 2024Applicant: DOLBY INTERNATIONAL ABInventors: Leif Jonas SAMUELSSON, Heiko PURNHAGEN, Lars VILLEMOES
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Patent number: 11950078Abstract: Methods for dialogue enhancing audio content, comprising providing a first audio signal presentation of the audio components, providing a second audio signal presentation, receiving a set of dialogue estimation parameters configured to enable estimation of dialogue components from the first audio signal presentation, applying said set of dialogue estimation parameters to said first audio signal presentation, to form a dialogue presentation of the dialogue components; and combining the dialogue presentation with said second audio signal presentation to form a dialogue enhanced audio signal presentation for reproduction on the second audio reproduction system, wherein at least one of said first and second audio signal presentation is a binaural audio signal presentation.Type: GrantFiled: April 28, 2023Date of Patent: April 2, 2024Assignees: Dolby Laboratories Licensing Corporation, DOLBY INTERNATIONAL ABInventors: Leif Jonas Samuelsson, Dirk Jeroen Breebaart, David Matthew Cooper, Jeroen Koppens
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Publication number: 20240105186Abstract: A method for encoding an input audio stream including the steps of obtaining a first playback stream presentation of the input audio stream intended for reproduction on a first audio reproduction system, obtaining a second playback stream presentation of the input audio stream intended for reproduction on a second audio reproduction system, determining a set of transform parameters suitable for transforming an intermediate playback stream presentation to an approximation of the second playback stream presentation, wherein the transform parameters are determined by minimization of a measure of a difference between the approximation of the second playback stream presentation and the second playback stream presentation, and encoding the first playback stream presentation and the set of transform parameters for transmission to a decoder.Type: ApplicationFiled: October 16, 2023Publication date: March 28, 2024Applicants: DOLBY LABORATORIES LICENSING CORPORATION, DOLBY INTERNATIONAL ABInventors: Dirk Jeroen Breebaart, David Matthew Cooper, Leif Jonas Samuelsson, Jeroen Koppens, Rhonda J. Wilson, Heiko Purnhagen, Alexander Stahlmann
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Patent number: 11894003Abstract: Audio objects are associated with positional metadata. A received downmix signal comprises downmix channels that are linear combinations of one or more audio objects and are associated with respective positional locators. In a first aspect, the downmix signal, the positional metadata and frequency-dependent object gains are received. An audio object is reconstructed by applying the object gain to an upmix of the downmix signal in accordance with coefficients based on the positional metadata and the positional locators. In a second aspect, audio objects have been encoded together with at least one bed channel positioned at a positional locator of a corresponding downmix channel. The decoding system receives the downmix signal and the positional metadata of the audio objects. A bed channel is reconstructed by suppressing the content representing audio objects from the corresponding downmix channel on the basis of the positional locator of the corresponding downmix channel.Type: GrantFiled: February 10, 2023Date of Patent: February 6, 2024Assignee: DOLBY INTERNATIONAL ABInventors: Toni Hirvonen, Heiko Purnhagen, Leif Jonas Samuelsson, Lars Villemoes
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Publication number: 20230360659Abstract: A method for representing a second presentation of audio channels or objects as a data stream, the method comprising the steps of: (a) providing a set of base signals, the base signals representing a first presentation of the audio channels or objects; (b) providing a set of transformation parameters, the transformation parameters intended to transform the first presentation into the second presentation; the transformation parameters further being specified for at least two frequency bands and including a set of multi-tap convolution matrix parameters for at least one of the frequency bands.Type: ApplicationFiled: July 13, 2023Publication date: November 9, 2023Applicants: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Dirk Jeroen Breebaart, David Matthew Cooper, Leif Jonas Samuelsson
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Publication number: 20230345192Abstract: Methods for dialogue enhancing audio content, comprising providing a first audio signal presentation of the audio components, providing a second audio signal presentation, receiving a set of dialogue estimation parameters configured to enable estimation of dialogue components from the first audio signal presentation, applying said set of dialogue estimation parameters to said first audio signal presentation, to form a dialogue presentation of the dialogue components; and combining the dialogue presentation with said second audio signal presentation to form a dialogue enhanced audio signal presentation for reproduction on the second audio reproduction system, wherein at least one of said first and second audio signal presentation is a binaural audio signal presentation.Type: ApplicationFiled: April 28, 2023Publication date: October 26, 2023Applicants: Dolby Laboratories Licensing Corporation, DOLBY INTERNATIONAL ABInventors: Leif Jonas Samuelsson, Dirk Jeroen Breebaart, David Matthew Cooper, Jeroen Koppens
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Patent number: 11798567Abstract: A method for encoding an input audio stream including the steps of obtaining a first playback stream presentation of the input audio stream intended for reproduction on a first audio reproduction system, obtaining a second playback stream presentation of the input audio stream intended for reproduction on a second audio reproduction system, determining a set of transform parameters suitable for transforming an intermediate playback stream presentation to an approximation of the second playback stream presentation, wherein the transform parameters are determined by minimization of a measure of a difference between the approximation of the second playback stream presentation and the second playback stream presentation, and encoding the first playback stream presentation and the set of transform parameters for transmission to a decoder.Type: GrantFiled: April 8, 2021Date of Patent: October 24, 2023Assignees: DOLBY LABORATORIES LICENSING CORPORATION, DOLBY INTERNATIONAL ABInventors: Dirk Jeroen Breebaart, David Matthew Cooper, Leif Jonas Samuelsson, Jeroen Koppens, Rhonda J. Wilson, Heiko Purnhagen, Alexander Stahlmann
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Publication number: 20230290363Abstract: Exemplary embodiments provide encoding and decoding methods, and associated encoders and decoders, for encoding and decoding of an audio scene which is represented by one or more audio signals. The encoder generates a bit stream which comprises downmix signals and side information which includes individual matrix elements of a reconstruction matrix which enables reconstruction of the one or more audio signals in the decoder.Type: ApplicationFiled: May 15, 2023Publication date: September 14, 2023Applicant: Dolby International ABInventors: Heiko PURNHAGEN, Lars VILLEMOES, Leif Jonas SAMUELSSON, Toni HIRVONEN
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Publication number: 20230282219Abstract: The present disclosure provides methods, devices and computer program products for encoding and decoding of a vector of parameters in an audio coding system. The disclosure further relates to a method and apparatus for reconstructing an audio object in an audio decoding system. According to the disclosure, a modulo differential approach for coding and encoding a vector of a non-periodic quantity may improve the coding efficiency and provide encoders and decoders with less memory requirements. Moreover, an efficient method for encoding and decoding a sparse matrix is provided.Type: ApplicationFiled: February 27, 2023Publication date: September 7, 2023Applicant: DOLBY INTERNATIONAL ABInventors: Leif Jonas SAMUELSSON, Heiko PURNHAGEN
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Publication number: 20230267939Abstract: Audio objects are associated with positional metadata. A received downmix signal comprises downmix channels that are linear combinations of one or more audio objects and are associated with respective positional locators. In a first aspect, the downmix signal, the positional metadata and frequency-dependent object gains are received. An audio object is reconstructed by applying the object gain to an upmix of the downmix signal in accordance with coefficients based on the positional metadata and the positional locators. In a second aspect, audio objects have been encoded together with at least one bed channel positioned at a positional locator of a corresponding downmix channel. The decoding system receives the downmix signal and the positional metadata of the audio objects. A bed channel is reconstructed by suppressing the content representing audio objects from the corresponding downmix channel on the basis of the positional locator of the corresponding downmix channel.Type: ApplicationFiled: February 10, 2023Publication date: August 24, 2023Applicant: DOLBY INTERNATIONAL ABInventors: Toni Hirvonen, Heiko Purnhagen, Leif Jonas Samuelsson, Lars Villemoes
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Patent number: 11705143Abstract: A method for representing a second presentation of audio channels or objects as a data stream, the method comprising the steps of: (a) providing a set of base signals, the base signals representing a first presentation of the audio channels or objects; (b) providing a set of transformation parameters, the transformation parameters intended to transform the first presentation into the second presentation; the transformation parameters further being specified for at least two frequency bands and including a set of multi-tap convolution matrix parameters for at least one of the frequency bands.Type: GrantFiled: August 13, 2022Date of Patent: July 18, 2023Assignees: DOLBY LABORATORIES LICENSING CORPORATION, DOLBY INTERNATIONAL ABInventors: Dirk Jeroen Breebaart, David Matthew Cooper, Leif Jonas Samuelsson
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Patent number: 11682403Abstract: Exemplary embodiments provide encoding and decoding methods, and associated encoders and decoders, for encoding and decoding of an audio scene which is represented by one or more audio signals. The encoder generates a bit stream which comprises downmix signals and side information which includes individual matrix elements of a reconstruction matrix which enables reconstruction of the one or more audio signals in the decoder.Type: GrantFiled: April 19, 2022Date of Patent: June 20, 2023Assignee: DOLBY INTERNATIONAL ABInventors: Heiko Purnhagen, Lars Villemoes, Leif Jonas Samuelsson, Toni Hirvonen
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Patent number: 11641560Abstract: Methods for dialogue enhancing audio content, comprising providing a first audio signal presentation of the audio components, providing a second audio signal presentation, receiving a set of dialogue estimation parameters configured to enable estimation of dialogue components from the first audio signal presentation, applying said set of dialogue estimation parameters to said first audio signal presentation, to form a dialogue presentation of the dialogue components; and combining the dialogue presentation with said second audio signal presentation to form a dialogue enhanced audio signal presentation for reproduction on the second audio reproduction system, wherein at least one of said first and second audio signal presentation is a binaural audio signal presentation.Type: GrantFiled: September 2, 2021Date of Patent: May 2, 2023Assignees: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Leif Jonas Samuelsson, Dirk Jeroen Breebaart, David Matthew Cooper, Jeroen Koppens
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Patent number: 11594233Abstract: The present disclosure provides methods, devices and computer program products for encoding and decoding of a vector of parameters in an audio coding system. The disclosure further relates to a method and apparatus for reconstructing an audio object in an audio decoding system. According to the disclosure, a modulo differential approach for coding and encoding a vector of a non-periodic quantity may improve the coding efficiency and provide encoders and decoders with less memory requirements. Moreover, an efficient method for encoding and decoding a sparse matrix is provided.Type: GrantFiled: May 28, 2021Date of Patent: February 28, 2023Assignee: Dolby International ABInventors: Leif Jonas Samuelsson, Heiko Purnhagen
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Patent number: 11580995Abstract: Audio objects are associated with positional metadata. A received downmix signal comprises downmix channels that are linear combinations of one or more audio objects and are associated with respective positional locators. In a first aspect, the downmix signal, the positional metadata and frequency-dependent object gains are received. An audio object is reconstructed by applying the object gain to an upmix of the downmix signal in accordance with coefficients based on the positional metadata and the positional locators. In a second aspect, audio objects have been encoded together with at least one bed channel positioned at a positional locator of a corresponding downmix channel. The decoding system receives the downmix signal and the positional metadata of the audio objects. A bed channel is reconstructed by suppressing the content representing audio objects from the corresponding downmix channel on the basis of the positional locator of the corresponding downmix channel.Type: GrantFiled: April 1, 2021Date of Patent: February 14, 2023Assignee: Dolby International ABInventors: Toni Hirvonen, Heiko Purnhagen, Leif Jonas Samuelsson, Lars Villemoes
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Publication number: 20220399027Abstract: A method for representing a second presentation of audio channels or objects as a data stream, the method comprising the steps of: (a) providing a set of base signals, the base signals representing a first presentation of the audio channels or objects; (b) providing a set of transformation parameters, the transformation parameters intended to transform the first presentation into the second presentation; the transformation parameters further being specified for at least two frequency bands and including a set of multi-tap convolution matrix parameters for at least one of the frequency bands.Type: ApplicationFiled: August 13, 2022Publication date: December 15, 2022Applicant: Dolby Laboratories Licensing CorporationInventors: Dirk Jeroen BREEBAART, David Matthew COOPER, Leif Jonas SAMUELSSON
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Publication number: 20220310102Abstract: Exemplary embodiments provide encoding and decoding methods, and associated encoders and decoders, for encoding and decoding of an audio scene which is represented by one or more audio signals. The encoder generates a bit stream which comprises downmix signals and side information which includes individual matrix elements of a reconstruction matrix which enables reconstruction of the one or more audio signals in the decoder.Type: ApplicationFiled: April 19, 2022Publication date: September 29, 2022Applicant: Dolby International ABInventors: Heiko PURNHAGEN, Lars VILLEMOES, Leif Jonas SAMUELSSON, Toni HIRVONEN
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Patent number: 11423917Abstract: A method for representing a second presentation of audio channels or objects as a data stream, the method comprising the steps of: (a) providing a set of base signals, the base signals representing a first presentation of the audio channels or objects; (b) providing a set of transformation parameters, the transformation parameters intended to transform the first presentation into the second presentation; the transformation parameters further being specified for at least two frequency bands and including a set of multi-tap convolution matrix parameters for at least one of the frequency bands.Type: GrantFiled: May 26, 2020Date of Patent: August 23, 2022Assignee: DOLBY INTERNATIONAL ABInventors: Dirk Jeroen Breebaart, David Matthew Cooper, Leif Jonas Samuelsson
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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: 11315577Abstract: Exemplary embodiments provide encoding and decoding methods, and associated encoders and decoders, for encoding and decoding of an audio scene which is represented by one or more audio signals. The encoder generates a bit stream which comprises downmix signals and side information which includes individual matrix elements of a reconstruction matrix which enables reconstruction of the one or more audio signals in the decoder.Type: GrantFiled: July 24, 2020Date of Patent: April 26, 2022Assignee: Dolby International ABInventors: Heiko Purnhagen, Lars Villemoes, Leif Jonas Samuelsson, Toni Hirvonen