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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Publication number: 20170103761Abstract: 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: ApplicationFiled: October 7, 2016Publication date: April 13, 2017Applicant: Dolby Laboratories Licensing CorporationInventors: Xuejing Sun, Kai Li, Mark S. Vinton, Shen Huang
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Publication number: 20170084281Abstract: A method and system for reconstructing an original audio signal is disclosed. The original audio signal has a baseband up to a cutoff frequency and high-frequency components not included in the baseband above the cutoff frequency. The system includes a bitstream deformatter that extracts a representation of the baseband, an estimated spectral envelope, and noise-blending parameters from an audio bitstream. The system also includes a spectral component regenerator that copies or translates all or at least some of the baseband spectral components to non-overlapping frequency ranges of the high-frequency components not included in the baseband to generate regenerated spectral components. The system further includes a gain adjuster that modifies a spectral envelope of the regenerated spectral components based at least in part on the estimated spectral envelope and the noise-blending parameters to generate gain-adjusted regenerated spectral components.Type: ApplicationFiled: December 6, 2016Publication date: March 23, 2017Applicant: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Patent number: 9548060Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes extracting temporal envelope information and spectral components of the baseband portion. The method further includes obtaining a decoded baseband audio signal. The obtaining includes filtering in a frequency domain at least some of the spectral components of the baseband portion with the reconstruction filter using the temporal envelope information to shape a temporal envelope of the baseband portion. The method also includes extracting a noise parameter and an estimated spectral envelope of the highband portion and obtaining a plurality of subband signals by filtering the decoded baseband audio signal.Type: GrantFiled: September 7, 2016Date of Patent: January 17, 2017Inventors: Michael M. Truman, Mark S. Vinton
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Publication number: 20160379655Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes extracting temporal envelope information and spectral components of the baseband portion. The method further includes obtaining a decoded baseband audio signal. The obtaining includes filtering in a frequency domain at least some of the spectral components of the baseband portion with the reconstruction filter using the temporal envelope information to shape a temporal envelope of the baseband portion. The method also includes extracting a noise parameter and an estimated spectral envelope of the highband portion and obtaining a plurality of subband signals by filtering the decoded baseband audio signal.Type: ApplicationFiled: September 7, 2016Publication date: December 29, 2016Applicant: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Publication number: 20160314796Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes deformatting an encoded audio signal into a first part and a second part and extracting, from the first part, temporal envelope information and spectral components of the baseband portion. The method further includes decoding the first part to obtain a decoded baseband audio signal. The decoding includes filtering in a frequency domain at least some of the spectral components of the baseband portion with the reconstruction filter using the temporal envelope information to shape a temporal envelope of the baseband portion. The method also includes extracting, from the second part, a noise parameter and an estimated spectral envelope of the highband portion and obtaining a plurality of subband signals by filtering the decoded baseband audio signal.Type: ApplicationFiled: July 6, 2016Publication date: October 27, 2016Applicant: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Patent number: 9466306Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes deformatting an encoded audio signal into a first part and a second part and extracting, from the first part, temporal envelope information and spectral components of the baseband portion. The method further includes decoding the first part to obtain a decoded baseband audio signal. The decoding includes filtering in a frequency domain at least some of the spectral components of the baseband portion with the reconstruction filter using the temporal envelope information to shape a temporal envelope of the baseband portion. The method also includes extracting, from the second part, a noise parameter and an estimated spectral envelope of the highband portion and obtaining a plurality of subband signals by filtering the decoded baseband audio signal.Type: GrantFiled: July 6, 2016Date of Patent: October 11, 2016Assignee: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Publication number: 20160241982Abstract: An audio processing system, such as an upmixer, may be capable of separating diffuse and non-diffuse portions of N input audio signals. The upmixer may be capable of detecting instances of transient audio signal conditions. During instances of transient audio signal conditions, the up-mixer may be capable of adding a signal-adaptive control to a diffuse signal expansion process in which M audio signals are output. The upmixer may vary the diffuse signal expansion process over time such that during instances of transient audio signal conditions the diffuse portions of audio signals may be distributed substantially only to output channels spatially close to the input channels. During instances of non-transient audio signal conditions, the diffuse portions of diffuse portions of audio signals may be distributed in a substantially uniform manner.Type: ApplicationFiled: September 26, 2014Publication date: August 18, 2016Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Alan J. SEEFELDT, Mark S. VINTON, C. Phillip BROWN
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Publication number: 20160232911Abstract: 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 in a circular manner a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal by adjusting, based on an estimated spectral envelope of the highband portion, a spectral envelope of the high-frequency reconstructed signal. The method further includes generating a noise component based on a noise parameter and obtaining a combined high-frequency signal by adding the noise component to the envelope adjusted high-frequency signal.Type: ApplicationFiled: April 14, 2016Publication date: August 11, 2016Applicant: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Publication number: 20160232905Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes deformatting an encoded audio signal into a first part and a second part and extracting, from the first part, temporal envelope information and spectral components of the baseband portion. The method further includes decoding the first part to obtain a decoded baseband audio signal. The decoding includes filtering in a frequency domain at least some of the spectral components of the baseband portion with the reconstruction filter using the temporal envelope information to shape a temporal envelope of the baseband portion. The method also includes extracting, from the second part, a noise parameter and an estimated spectral envelope of the highband portion and obtaining a plurality of subband signals by filtering the decoded baseband audio signal.Type: ApplicationFiled: April 20, 2016Publication date: August 11, 2016Applicant: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Publication number: 20160232904Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes deformatting an encoded audio signal into a first part and a second part and obtaining a decoded baseband audio signal by decoding the first part. The method also includes extracting, from the second part, a noise parameter and an estimated spectral envelope of the highband portion 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 in a circular manner a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal by adjusting, based on the estimated spectral envelope of the highband portion, a spectral envelope of the high-frequency reconstructed signal.Type: ApplicationFiled: April 14, 2016Publication date: August 11, 2016Applicant: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Patent number: 9412383Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes deformatting an encoded audio signal into a first part and a second part and obtaining a decoded baseband audio signal by decoding the first part. The method also includes extracting, from the second part, a noise parameter and an estimated spectral envelope of the highband portion 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 in a circular manner a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal by adjusting, based on the estimated spectral envelope of the highband portion, a spectral envelope of the high-frequency reconstructed signal.Type: GrantFiled: April 14, 2016Date of Patent: August 9, 2016Assignee: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Patent number: 9412388Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes deformatting an encoded audio signal into a first part and a second part and extracting, from the first part, temporal envelope information and spectral components of the baseband portion. The method further includes decoding the first part to obtain a decoded baseband audio signal. The decoding includes filtering in a frequency domain at least some of the spectral components of the baseband portion with the reconstruction filter using the temporal envelope information to shape a temporal envelope of the baseband portion. The method also includes extracting, from the second part, a noise parameter and an estimated spectral envelope of the highband portion and obtaining a plurality of subband signals by filtering the decoded baseband audio signal.Type: GrantFiled: April 20, 2016Date of Patent: August 9, 2016Assignee: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Patent number: 9412389Abstract: 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 in a circular manner a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal by adjusting, based on an estimated spectral envelope of the highband portion, a spectral envelope of the high-frequency reconstructed signal. The method further includes generating a noise component based on a noise parameter and obtaining a combined high-frequency signal by adding the noise component to the envelope adjusted high-frequency signal.Type: GrantFiled: April 14, 2016Date of Patent: August 9, 2016Assignee: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Patent number: 9378743Abstract: In a class of embodiments, an audio encoding system (typically, a perceptual encoding system that is configured to generate a single (“unified”) bitstream that is compatible with (i.e., decodable by) a first decoder configured to decode audio data encoded in accordance with a first encoding protocol (e.g., the multichannel Dolby Digital Plus, or DD+, protocol) and a second decoder configured to decode audio data encoded in accordance with a second encoding protocol (e.g., the stereo AAC, HE AAC v1, or HE AAC v2 protocol). The unified bitstream can include both encoded data (e.g., bursts of data) decodable by the first decoder (and ignored by the second decoder) and encoded data (e.g., other bursts of data) decodable by the second decoder (and ignored by the first decoder).Type: GrantFiled: April 5, 2012Date of Patent: June 28, 2016Assignees: Dolby Laboratories Licensing Corp., Dolby International ABInventors: Jeffrey C. Riedmiller, Farhad Farahani, Michael Schug, Regunathan Radhakrishnan, Mark S. Vinton
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Patent number: 9343071Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes deformatting an encoded audio signal into a first part and a second part and decoding the first part to obtain a decoded baseband audio signal. The method also includes extracting an estimated spectral envelope of the highband portion and a noise parameter from the second part and filtering the decoded baseband audio signal to obtain a plurality of subband signals. 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 adjusting a spectral envelope of the high-frequency reconstructed signal based on the estimated spectral envelope of the highband portion to obtain an envelope adjusted high-frequency signal.Type: GrantFiled: June 10, 2015Date of Patent: May 17, 2016Assignee: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Patent number: 9324328Abstract: A method for reconstructing an audio signal having a baseband portion and a highband portion is disclosed. The method includes decoding an encoded audio signal to obtain a decoded baseband audio signal, filtering the decoded baseband audio signal to obtain subband signals, and generating a high-frequency reconstructed signal by copying a number of consecutive subband signals. The method also includes adjusting a spectral envelope of the high-frequency reconstructed signal based on an estimated spectral envelope of the highband portion extracted from the encoded audio signal to obtain an envelope adjusted high-frequency signal, generating a noise component based on a noise parameter extracted from the encoded audio signal, and adding the noise component to the envelope adjusted high-frequency signal to obtain a noise and envelope adjusted high-frequency signal.Type: GrantFiled: May 11, 2015Date of Patent: April 26, 2016Assignee: Dolby Laboratories Licensing CorporationInventors: Michael M. Truman, Mark S. Vinton
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Patent number: 9275649Abstract: A method for determining mantissa bit allocation of audio data values of frequency domain audio data to be encoded. The allocation method includes a step of determining masking values for the audio data values, including by performing adaptive low frequency compensation on the audio data of each frequency band of a set of low frequency bands of the audio data. The adaptive low frequency compensation includes steps of: performing tonality detection on the audio data to generate compensation control data indicative of whether each frequency band in the set of low frequency bands has prominent tonal content; and performing low frequency compensation on the audio data in each frequency band in the set of low frequency bands having prominent tonal content as indicated by the compensation control data, but not performing low frequency compensation on the audio data in any other frequency band in the set of low frequency bands.Type: GrantFiled: July 7, 2014Date of Patent: March 1, 2016Assignees: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Arijit Biswas, Vinay Melkote, Michael Schug, Grant A. Davidson, Mark S. Vinton
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Publication number: 20150380000Abstract: Audio processing methods may involve receiving audio data corresponding to a plurality of audio channels. The audio data may include a frequency domain representation corresponding to filterbank coefficients of an audio encoding or processing system. A decorrelation process may be performed with the same filterbank coefficients used by the audio encoding or processing system. The decorrelation process may be performed without converting coefficients of the frequency domain representation to another frequency domain or time domain representation. The decorrelation process may involve selective or signal-adaptive decorrelation of specific channels and/or specific frequency bands. The decorrelation process may involve applying a decorrelation filter to a portion of the received audio data to produce filtered audio data. The decorrelation process may involve using a non-hierarchal mixer to combine a direct portion of the received audio data with the filtered audio data according to spatial parameters.Type: ApplicationFiled: January 22, 2014Publication date: December 31, 2015Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Vinay MELKOTE, Kuan-Chieh YEN, Grant A. DAVIDSON, Matthew FELLERS, Mark S. VINTON, Vivek KUMAR
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Patent number: 9173025Abstract: A system, a method, logic embodied in a computer-readable medium, and a computer-readable medium comprising instructions that when executed carry out a method. The method processes: (a) a plurality of input signals, e.g., signals from a plurality of spatially separated microphones; and, for echo suppression, (b) one or more reference signals, e.g., signals from or to be rendered by one or more loudspeakers and that can cause echoes. The method processes the input signals and one or more reference signals to carry out in an integrated manner simultaneous noise suppression and out-of-location signal suppression, and in some versions, echo suppression.Type: GrantFiled: August 9, 2013Date of Patent: October 27, 2015Assignee: Dolby Laboratories Licensing CorporationInventors: Glenn N. Dickins, Timothy J. Neal, Mark S. Vinton
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Publication number: 20150279379Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes deformatting an encoded audio signal into a first part and a second part and decoding the first part to obtain a decoded baseband audio signal. The method also includes extracting an estimated spectral envelope of the highband portion and a noise parameter from the second part and filtering the decoded baseband audio signal to obtain a plurality of subband signals. 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 adjusting a spectral envelope of the high-frequency reconstructed signal based on the estimated spectral envelope of the highband portion to obtain an envelope adjusted high-frequency signal.Type: ApplicationFiled: June 10, 2015Publication date: October 1, 2015Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Michael M. Truman, Mark S. Vinton