Patents by Inventor Mark S. Vinton
Mark S. Vinton 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: 11894005Abstract: An audio communication endpoint receives a bitstream containing spectral components representing spectral content of an audio signal, wherein the spectral components relate to a first range extending up to a first break frequency, above which any spectral components are unassigned. The endpoint adapts the received bitstream in accordance with a second range extending up to a second break frequency by removing spectral components or adding neutral-valued spectral components relating to a range between the first and second break frequencies. The endpoint then attenuates spectral content in a neighbourhood of the least of the first and second break frequencies for thereby achieving a gradual spectral decay. After this, reconstructing the audio signal is reconstructed by an inverse transform operating on spectral components relating to said second range in the adapted and attenuated received bitstream. At small computational expense, the endpoint may to adapt to different sample rates in received bitstreams.Type: GrantFiled: November 15, 2019Date of Patent: February 6, 2024Assignees: DOLBY LABORATORIES LICENSING CORPORATION, DOLBY INTERNATIONAL ABInventors: Heiko Purnhagen, Leif Sehlstrom, Lars Villemoes, Glenn N. Dickins, Mark S Vinton
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Publication number: 20230395086Abstract: Described herein is a method of processing an audio signal using a neural network or using a first and a second neural network. Described is further a method of training said neural network or of jointly training a set of said first and said second neural network. Moreover, described is a method of obtaining and transmitting a latent feature space representation of a perceptual domain audio signal using a neural network and a method of obtaining an audio signal from a latent feature space representation of a perceptual domain audio signal using a neural network. Described are also respective apparatuses and computer program products.Type: ApplicationFiled: October 14, 2021Publication date: December 7, 2023Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Mark S. VINTON, Cong ZHOU, Roy M. FEJGIN, Grant A. DAVIDSON
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Publication number: 20230394287Abstract: A neural network system for predicting frequency coefficients of a media signal, the neural network system comprising a time predicting portion including at least one neural network trained to predict a first set of output variables representing a specific frequency band of a current time frame given coefficients of one or several previous time frames, and a frequency predicting portion including a at least one neural network trained to predict a second set of output variables representing a specific frequency band given coefficients of one or several frequency bands adjacent to the specific frequency band in said current time frame. Such a neural network system forms a predictor capable of capturing both temporal and frequency dependencies occurring in time-frequency tiles of a media signal.Type: ApplicationFiled: October 12, 2021Publication date: December 7, 2023Applicants: Dolby Laboratories Licensing Corporation, DOLBY INTERNATIONAL ABInventors: Cong Zhou, Mark S. Vinton, Grant A. Davidson, Lars Villemoes
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Publication number: 20230386486Abstract: The present invention relates to a method for predicting transform coefficients representing frequency content of an adaptive block length media signal, by receiving a frame and receiving block length information indicating a number of quantized transform coefficients for each block in the frame, the number of quantized transform coefficients being one of a first or second number, wherein the first number is greater than the second number, determining a first block has the second number of quantized transform coefficients, converting the first block into a converted block having the first number of quantized transform coefficients, conditioning a main neural network trained to predict at least one output variable given at least one conditioning variable, the at least one conditioning variable being based on information regarding the converted block and block length information for the first block, providing at least one predicted transform coefficients from an output stage of the main neural network.Type: ApplicationFiled: October 15, 2021Publication date: November 30, 2023Applicant: Dolby Laboratories Licensing CorporationInventors: Cong ZHOU, Grant A. DAVIDSON, Mark S. VINTON
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Publication number: 20230328469Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.Type: ApplicationFiled: April 28, 2023Publication date: October 12, 2023Applicant: Dolby Laboratories Licensing CorporationInventors: Louis D. Fielder, Zhiwei Shuang, Grant A. Davidson, Xiguang Zheng, Mark S. Vinton
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Patent number: 11671779Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.Type: GrantFiled: October 4, 2021Date of Patent: June 6, 2023Assignee: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Louis D. Fielder, Zhiwei Shuang, Grant A. Davidson, Xiguang Zheng, Mark S. Vinton
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Publication number: 20220415334Abstract: The present disclosure relates to the field of audio coding, in particular, it relates to a method for encoding audio signals through a masking model based on a hearing threshold of frequency intervals of the audio signal and a measured energy of the audio signal for the corresponding frequency intervals. The disclosure further relates to an encoder that is capable of carrying out the audio encoding method.Type: ApplicationFiled: December 3, 2020Publication date: December 29, 2022Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Grant A. Davidson, Louis D. Fielder, Mark S. Vinton
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Publication number: 20220103959Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.Type: ApplicationFiled: October 4, 2021Publication date: March 31, 2022Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Louis D. Fielder, Zhiwei Shuang, Grant A. Davidson, Xiguang Zheng, Mark S. Vinton
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Patent number: 11140501Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.Type: GrantFiled: August 6, 2020Date of Patent: October 5, 2021Assignee: Dolby Laboratories Licensing CorporationInventors: Louis D. Fielder, Zhiwei Shuang, Grant A. Davidson, Xiguang Zheng, Mark S. Vinton
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Publication number: 20200367003Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.Type: ApplicationFiled: August 6, 2020Publication date: November 19, 2020Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Louis D. Fielder, Zhiwei Shuang, Grant A. Davidson, Xiguang Zheng, Mark S. Vinton
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Patent number: 10750306Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.Type: GrantFiled: July 12, 2019Date of Patent: August 18, 2020Assignee: Dolby Laboratories Licensing CorporationInventors: Louis D. Fielder, Zhiwei Shuang, Grant A. Davidson, Xiguang Zheng, Mark S. Vinton
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Publication number: 20200143817Abstract: According to an aspect of the present invention, a method for reconstructing an audio signal having a baseband portion and a highband portion is disclosed. The method includes obtaining a decoded baseband audio signal by decoding an encoded audio signal and obtaining a plurality of subband signals by filtering the decoded baseband audio signal. The method further includes generating a high-frequency reconstructed signal by copying a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal. The method further includes generating a noise component based on a noise parameter. Finally, the method includes adjusting a phase of the high-frequency reconstructed signal and obtaining a time-domain reconstructed audio signal by combining the decoded baseband audio signal and the combined high-frequency signal to obtain a time-domain reconstructed audio signal.Type: ApplicationFiled: January 6, 2020Publication date: May 7, 2020Applicant: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Publication number: 20200082836Abstract: An audio communication endpoint receives a bitstream containing spectral components representing spectral content of an audio signal, wherein the spectral components relate to a first range extending up to a first break frequency, above which any spectral components are unassigned. The endpoint adapts the received bitstream in accordance with a second range extending up to a second break frequency by removing spectral components or adding neutral-valued spectral components relating to a range between the first and second break frequencies. The endpoint then attenuates spectral content in a neighbourhood of the least of the first and second break frequencies for thereby achieving a gradual spectral decay. After this, reconstructing the audio signal is reconstructed by an inverse transform operating on spectral components relating to said second range in the adapted and attenuated received bitstream. At small computational expense, the endpoint may to adapt to different sample rates in received bitstreams.Type: ApplicationFiled: November 15, 2019Publication date: March 12, 2020Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Heiko PURNHAGEN, Leif SEHLSTROM, Lars VILLEMOES, Glenn N. DICKINS, Mark S. VINTON
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Patent number: 10553224Abstract: A method for performing inter-channel encoding of a multi-channel audio signal comprising channel signals for N channels, with N being an integer, with N>1, is described. The method comprises determining a basic graph comprising the N channels as nodes and comprising directed edges between at least some of the N channels. Furthermore, the method comprises determining an inter-channel coding graph from the basic graph, such that the inter-channel coding graph is a directed acyclic graph, and such that a cumulated a cumulated cost of the signals of the nodes of the inter-channel coding graph is reduced.Type: GrantFiled: October 2, 2018Date of Patent: February 4, 2020Assignees: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Janusz Klejsa, Roy M. Fejgin, Mark S. Vinton
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Patent number: 10529347Abstract: According to an aspect of the present invention, a method for reconstructing an audio signal having a baseband portion and a highband portion is disclosed. The method includes obtaining a decoded baseband audio signal by decoding an encoded audio signal and obtaining a plurality of subband signals by filtering the decoded baseband audio signal. The method further includes generating a high-frequency reconstructed signal by copying a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal. The method further includes generating a noise component based on a noise parameter. Finally, the method includes adjusting a phase of the high-frequency reconstructed signal and obtaining a time-domain reconstructed audio signal by combining the decoded baseband audio signal and the combined high-frequency signal to obtain a time-domain reconstructed audio signal.Type: GrantFiled: February 5, 2019Date of Patent: January 7, 2020Assignee: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Patent number: 10504525Abstract: A method of encoding audio information for forward error correction reconstruction of a transmitted audio stream over a lossy packet switched network, the method including the steps of: (a) dividing the audio stream into audio frames; (b) determining a series of corresponding audio frequency bands for the audio frames; (c) determining a series of power envelopes for the frequency bands; (d) encoding the envelopes as a low bit rate version of the audio frame in a redundant transmission frame.Type: GrantFiled: October 7, 2016Date of Patent: December 10, 2019Assignee: Dolby Laboratories Licensing CorporationInventors: Xuejing Sun, Kai Li, Mark S. Vinton, Shen Huang
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Patent number: 10482891Abstract: An audio communication endpoint receives a bitstream containing spectral components representing spectral content of an audio signal, wherein the spectral components relate to a first range extending up to a first break frequency, above which any spectral components are unassigned. The endpoint adapts the received bitstream in accordance with a second range extending up to a second break frequency by removing moving spectral components or adding neutral-valued spectral components relating to a range between the first and second break frequencies. The endpoint then attenuates spectral content in a neighbourhood of the least of the first and second break frequencies for thereby achieving a gradual spectral decay. After this, reconstructing the audio signal is reconstructed by an inverse transform operating on spectral components relating to said second range in the adapted and attenuated received bitstream.Type: GrantFiled: January 10, 2018Date of Patent: November 19, 2019Assignees: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Heiko Purnhagen, Leif Sehlstrom, Lars Villemoes, Glenn N. Dickins, Mark S. Vinton
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Publication number: 20190342685Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.Type: ApplicationFiled: July 12, 2019Publication date: November 7, 2019Applicant: Dolby Laboratories Licensing CorporationInventors: Louis D. FIELDER, Zhiwei SHUANG, Grant A. DAVIDSON, Xiguang ZHENG, Mark S. VINTON
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Patent number: 10382875Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.Type: GrantFiled: October 18, 2018Date of Patent: August 13, 2019Assignee: Dolby Laboratories Licensing CorporationInventors: Louis D. Fielder, Zhiwei Shuang, Grant A. Davidson, Xiguang Zheng, Mark S. Vinton
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Publication number: 20190172472Abstract: According to an aspect of the present invention, a method for reconstructing an audio signal having a baseband portion and a highband portion is disclosed. The method includes obtaining a decoded baseband audio signal by decoding an encoded audio signal and obtaining a plurality of subband signals by filtering the decoded baseband audio signal. The method further includes generating a high-frequency reconstructed signal by copying a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal. The method further includes generating a noise component based on a noise parameter. Finally, the method includes adjusting a phase of the high-frequency reconstructed signal and obtaining a time-domain reconstructed audio signal by combining the decoded baseband audio signal and the combined high-frequency signal to obtain a time-domain reconstructed audio signal.Type: ApplicationFiled: February 5, 2019Publication date: June 6, 2019Applicant: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton