Patents Assigned to Dolby International AB
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Patent number: 12131744Abstract: 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: October 16, 2023Date of Patent: October 29, 2024Assignees: 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: 12131742Abstract: The application relates to HFR (High Frequency Reconstruction/Regeneration) of audio signals. In particular, the application relates to a method and system for performing HFR of audio signals having large variations in energy level across the low frequency range which is used to reconstruct the high frequencies of the audio signal. A system configured to generate a plurality of high frequency subband signals covering a high frequency interval from a plurality of low frequency subband signals is described.Type: GrantFiled: May 2, 2024Date of Patent: October 29, 2024Assignee: DOLBY INTERNATIONAL ABInventor: Kristofer Kjoerling
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Patent number: 12131715Abstract: A system and method comprise a light source; a spatial light modulator including a substantially transparent material layer and a phase modulation layer; an imaging device configured to receive a light from the light source as reflected by the spatial light modulator, and to generate an image data; and a controller. The controller provides a phase-drive signal to the spatial light modulator and determines an attenuating wavefront of the substantially transparent material layer based on the image data.Type: GrantFiled: January 16, 2020Date of Patent: October 29, 2024Assignees: DOLBY LABORATORIES LICENSING CORPORATION, DOLBY INTERNATIONAL ABInventors: Angelo Miguel Pires Arrifano, Juan P. Pertierra
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Publication number: 20240355338Abstract: Described herein is a method of metadata-based dynamic processing of audio data for playback, the method including: receiving, by a decoder, a bitstream including audio data and metadata for dynamic loudness adjustment; decoding, by the decoder, the audio data and the metadata to obtain decoded audio data and the metadata; determining, by the decoder, from the metadata, one or more processing parameters for dynamic loudness adjustment based on a playback condition; applying the determined one or more processing parameters to the decoded audio data to obtain processed audio data; and outputting the processed audio data for playback. Described is further a method of encoding audio data and metadata for dynamic loudness adjustment into a bitstream. Moreover, described are a respective decoder and encoder, a respective system and computer program products.Type: ApplicationFiled: August 24, 2022Publication date: October 24, 2024Applicants: Dolby Laboratories Licensing Corporation, DOLBY INTERNATIONAL ABInventors: Christof FERSCH, Scott Gregory NORCROSS
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Publication number: 20240355345Abstract: Embodiments relate to an audio processing unit that includes a buffer, bitstream payload deformatter, and a decoding subsystem. The buffer stores at least one block of an encoded audio bitstream. The block includes a fill element that begins with an identifier followed by fill data. The fill data includes at least one flag identifying whether enhanced spectral band replication (eSBR) processing is to be performed on audio content of the block. A corresponding method for decoding an encoded audio bitstream is also provided.Type: ApplicationFiled: April 11, 2024Publication date: October 24, 2024Applicant: DOLBY INTERNATIONAL ABInventors: Lars Villemoes, Heiko Purnhagen, Per Ekstrand
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Patent number: 12126861Abstract: The present document discloses a method for playback of media content via a delivery channel. The delivery channel may generally refer to the channels through which audio or video programs are delivered (transmitted) to the user (receiver). The media content may generally comprise consecutive media programs. In particular, for a specific media program within the media content, a respective content type for that specific media program is also provided. The method may comprise receiving an indication of the sensitivity of a media program to playback latency. The method may further comprise receiving at least a portion of the media program. The method may yet further comprise adapting the playback of the media program based on the indication of its sensitivity to playback latency.Type: GrantFiled: July 15, 2020Date of Patent: October 22, 2024Assignee: DOLBY INTERNATIONAL ABInventors: Martin Wolters, Kurt Krauss
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Patent number: 12126985Abstract: The present disclosure relates to methods, apparatus and systems for encoding an audio signal into a bitstream, in particular at an encoder, comprising: encoding or including audio signal data associated with 3DoF audio rendering into one or more first bitstream parts of the bitstream, and encoding or including metadata associated with 6DoF audio rendering into one or more second bitstream parts of the bitstream. The present disclosure further relates to methods, apparatus and systems for decoding an audio signal and audio rendering based on the bitstream.Type: GrantFiled: August 25, 2022Date of Patent: October 22, 2024Assignee: DOLBY INTERNATIONAL ABInventors: Leon Terentiv, Christof Fersch, Daniel Fischer
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Publication number: 20240347068Abstract: Described herein is an audio decoder for decoding a bitstream of encoded audio data, wherein the bitstream of encoded audio data represents a sequence of audio sample values and comprises a plurality of frames, wherein each frame comprises associated encoded audio sample values, the audio decoder comprising: a determiner configured to determine whether a frame of the bitstream of encoded audio data is an immediate playout frame comprising encoded audio sample values associated with a current frame and additional information; and an initializer configured to initialize the decoder if the determiner determines that the frame is an immediate playout frame, wherein initializing the decoder comprises decoding the encoded audio sample values comprised by the additional information before decoding the encoded audio sample values associated with the current frame.Type: ApplicationFiled: March 18, 2024Publication date: October 17, 2024Applicant: Dolby International ABInventors: Christof Joseph FERSCH, Daniel FISCHER
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Publication number: 20240347069Abstract: The present document describes a method for generating a bitstream, wherein the bitstream comprises a sequence of superframes for a sequence of frames of an immersive audio signal. The method comprises, repeatedly for the sequence of superframes, inserting coded audio data for one or more frames of one or more downmix channel signals derived from the immersive audio signal, into data fields of a superframe; and inserting metadata for reconstructing one or more frames of the immersive audio signal from the coded audio data, into a metadata field of the superframe.Type: ApplicationFiled: June 21, 2024Publication date: October 17, 2024Applicants: Dolby Laboratories Licensing Corporation, DOLBY INTERNATIONAL ABInventors: Stefan BRUHN, Juan Felix TORRES
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Patent number: 12119011Abstract: The present invention relates to audio coding systems which make use of a harmonic transposition method for high frequency reconstruction (HFR). A system and a method for generating a high frequency component of a signal from a low frequency component of the signal is described. The system comprises an analysis filter bank providing a plurality of analysis subband signals of the low frequency component of the signal. It also comprises a non-linear processing unit to generate a synthesis subband signal with a synthesis frequency by modifying the phase of a first and a second of the plurality of analysis subband signals and by combining the phase-modified analysis subband signals. Finally, it comprises a synthesis filter bank for generating the high frequency component of the signal from the synthesis subband signal.Type: GrantFiled: February 12, 2024Date of Patent: October 15, 2024Assignee: DOLBY INTERNATIONAL ABInventors: Lars Villemoes, Per Hedelin
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Publication number: 20240338426Abstract: The present document describes a method (900) for controlling access to a software asset of a software program, which is executed on an electronic device (110). The method (900) comprises, on one or more software provider servers (120), receiving (902) a request for authentication from a service provider server (210); upon successful authentication, providing (904) an authentication token to the service provider server (210); receiving (906) a request for a feature access token from the service provider server (210); and in reaction to the request, providing (908) the feature access token to the service provider server (210).Type: ApplicationFiled: June 27, 2022Publication date: October 10, 2024Applicants: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Aleksandar BORKOVAC, Malte SCHMIDT, Paul F. GRIEPENTROG
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Publication number: 20240340356Abstract: A method for providing media content within a media distribution network. The method comprises transforming source media content into an interim format, thereby providing transformed content. Furthermore, the method comprises storing the transformed content on at least one core storage unit. In addition, the method comprises receiving a request for the source media content from a client. The method further comprises encoding the transformed content or intermediate coded content derived therefrom into encoded content suitable for transmission over a core network and/or an edge network, as well as sending the encoded content via the core network and/or the edge network to the client.Type: ApplicationFiled: February 29, 2024Publication date: October 10, 2024Applicants: DOLBY LABORATORIES LICENSING CORPORATION, DOLBY INTERNATIONAL ABInventors: Jason Michael CLOUD, Jeffrey RIEDMILLER, Kristofer KJOERLING, Janusz KLEJSA
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Patent number: 12112766Abstract: A method (600) for decoding an encoded audio signal (102) is described. The encoded audio signal (102) comprises a sequence of frames. Furthermore, the encoded audio signal (102) is indicative of a plurality of different dynamic range control (DRC) profiles for a corresponding plurality of different rendering modes. Different subsets of DRC profiles from the plurality of DRC profiles are comprised within different frames of the sequence of frames, such that two or more frames of the sequence of frames jointly comprise the plurality of DRC profiles.Type: GrantFiled: August 14, 2023Date of Patent: October 8, 2024Assignee: DOLBY INTERNATIONAL ABInventors: Holger Hoerich, Jeroen Koppens
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Publication number: 20240331708Abstract: The disclosed embodiments enable converting audio signals captured in various formats by various capture devices into a limited number of formats that can be processed by an audio codec (e.g., an Immersive Voice and Audio Services (IVAS) codec). In an embodiment, a simplification unit of the audio device receives an audio signal captured by one or more audio capture devices coupled to the audio device. The simplification unit determines whether the audio signal is in a format that is supported/not supported by an encoding unit of the audio device. Based on the determining, the simplification unit, converts the audio signal into a format that is supported by the encoding unit. In an embodiment, if the simplification unit determines that the audio signal is in a spatial format, the simplification unit can convert the audio signal into a spatial “mezzanine” format supported by the encoding.Type: ApplicationFiled: May 8, 2024Publication date: October 3, 2024Applicants: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Stefan BRUHN, Michael ECKERT, Juan Felix TORRES, Stefanie BROWN, David S. MCGRATH
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Publication number: 20240334146Abstract: Systems and methods for preserving headphone rendering mode (HRM) in object clustering are described. In an embodiment, an object-based audio data processing system includes a processor configured to receive a plurality of audio objects, wherein an audio object of the plurality of audio objects is associated with respective object metadata that indicates respective spatial position information and an HRM; determine a plurality of cluster positions by applying an extended hybrid distance metric to a spatial coding algorithm to calculate a partial loudness for each of the audio objects; render the audio objects to the cluster positions to form a plurality of clusters by applying the extended hybrid distance metric to the spatial coding algorithm to calculate object-to-cluster gains; and transmit the clusters to a spatial reproduction system.Type: ApplicationFiled: September 8, 2022Publication date: October 3, 2024Applicants: DOLBY LABORATORIES LICENSING CORPORATION, DOLBY INTERNATIONAL ABInventors: Ziyu Yang, Lie Lu, Heiko Purnhagen, Jeremy Grant Stoddard, Dirk Jeroen Breebaart
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Publication number: 20240334145Abstract: Multiple virtual source locations may be defined for a volume within which audio objects can move. A set-up process for rendering audio data may involve receiving reproduction speaker location data and pre-computing gain values for each of the virtual sources according to the reproduction speaker location data and each virtual source location. The gain values may be stored and used during “run time,” during which audio reproduction data are rendered for the speakers of the reproduction environment. During run time, for each audio object, contributions from virtual source locations within an area or volume defined by the audio object position data and the audio object size data may be computed. A set of gain values for each output channel of the reproduction environment may be computed based, at least in part, on the computed contributions. Each output channel may correspond to at least one reproduction speaker of the reproduction environment.Type: ApplicationFiled: April 1, 2024Publication date: October 3, 2024Applicants: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Antonio MATEOS SOLE, Nicolas R. TSINGOS
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Patent number: 12108083Abstract: A system utilizing a high throughput coding mode for CABAC in HEVC is described. The system may include an electronic device configured to obtain a block of data to be encoded using an arithmetic based encoder; to generate a sequence of syntax elements using the obtained block; to compare an Absolute-3 value of the sequence or a parameter associated with the Absolute-3 value to a preset value; and to convert the Absolute-3 value to a codeword using a first code or a second code that is different than the first code, according to a result of the comparison.Type: GrantFiled: May 31, 2023Date of Patent: October 1, 2024Assignee: DOLBY INTERNATIONAL ABInventors: Seung-Hwan Kim, Louis J. Kerofsky, Christopher A. Segall
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Patent number: 12106761Abstract: The application relates to HFR (High Frequency Reconstruction/Regeneration) of audio signals. In particular, the application relates to a method and system for performing HFR of audio signals having large variations in energy level across the low frequency range which is used to reconstruct the high frequencies of the audio signal. A system configured to generate a plurality of high frequency subband signals covering a high frequency interval from a plurality of low frequency subband signals is described.Type: GrantFiled: May 2, 2024Date of Patent: October 1, 2024Assignee: DOLBY INTERNATIONAL ABInventor: Kristofer Kjoerling
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Patent number: 12106762Abstract: The application relates to HFR (High Frequency Reconstruction/Regeneration) of audio signals. In particular, the application relates to a method and system for performing HFR of audio signals having large variations in energy level across the low frequency range which is used to reconstruct the high frequencies of the audio signal. A system configured to generate a plurality of high frequency subband signals covering a high frequency interval from a plurality of low frequency subband signals is described.Type: GrantFiled: May 2, 2024Date of Patent: October 1, 2024Assignee: DOLBY INTERNATIONAL ABInventor: Kristofer Kjoerling
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Publication number: 20240323608Abstract: Individual loudspeaker dynamics processing configuration data, for each of a plurality of loudspeakers of a listening environment, may be obtained. Listening environment dynamics processing configuration data may be determined, based on the individual loudspeaker dynamics processing configuration data. Dynamics processing may be performed on received audio data based on the listening environment dynamics processing configuration data, to generate processed audio data. The processed audio data may be rendered for reproduction via a set of loudspeakers that includes at least some of the plurality of loudspeakers, to produce rendered audio signals. The rendered audio signals may be provided to, and reproduced by, the set of loudspeakers.Type: ApplicationFiled: June 3, 2024Publication date: September 26, 2024Applicants: Dolby Laboratories Licensing Corporation, DOLBY INTERNATIONAL ABInventors: Alan J. Seefeldt, Joshua B. Lando, Daniel Arteaga