Patents by Inventor Matthew Fellers
Matthew Fellers 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: 10142761Abstract: A method for creating a head-related impulse response (HRIR) for use in rendering audio for playback through headphones comprises receiving location parameters for a sound including azimuth, elevation, and range relative to a head of a listener, applying a spherical head model to the azimuth, elevation, and range input parameters to generate binaural HRIR values, computing a pinna model using the azimuth and elevation parameters to apply to the binaural HRIR values to pinna modeled HRIR values, computing a torso model using the azimuth and elevation parameters to apply to the pinna modeled HRIR values to generate pinna and torso modeled HRIR values, and computing a near-field model using the azimuth and range parameters to apply to the pinna and torso modeled HRIR values to generate pinna, torso and near-field modeled HRIR values.Type: GrantFiled: March 4, 2015Date of Patent: November 27, 2018Assignee: Dolby Laboratories Licensing CorporationInventors: C. Phillip Brown, Matthew Fellers, Regunathan Radhakrishnan
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Patent number: 9830916Abstract: 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: GrantFiled: January 22, 2014Date of Patent: November 28, 2017Assignee: 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: 9754596Abstract: Audio characteristics of audio data corresponding to a plurality of audio channels may be determined. The audio characteristics may include spatial parameter data. Decorrelation filtering processes for the audio data may be based, at least in part, on the audio characteristics. The decorrelation filtering processes may cause a specific inter-decorrelation signal coherence (“IDC”) between channel-specific decorrelation signals for at least one pair of channels. The channel-specific decorrelation signals may be received and/or determined. Inter-channel coherence (“ICC”) between a plurality of audio channel pairs may be controlled. Controlling ICC may involve at receiving an ICC value and/or determining an ICC value based, at least partially, on the spatial parameter data. A set of IDC values may be based, at least partially, on the set of ICC values. A set of channel-specific decorrelation signals, corresponding with the set of IDC values, may be synthesized by performing operations on the filtered audio data.Type: GrantFiled: January 22, 2014Date of Patent: September 5, 2017Assignee: Dolby Laboratories Licensing CorporationInventors: Kuan-Chieh Yen, Vinay Melkote, Matthew Fellers, Grant A. Davidson
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Patent number: 9622010Abstract: Embodiments are directed to an interconnect for coupling components in an object-based rendering system comprising: a first network channel coupling a renderer to an array of individually addressable drivers projecting sound in a listening environment and transmitting audio signals and control data from the renderer to the array, and a second network channel coupling a microphone placed in the listening environment to a calibration component of the renderer and transmitting calibration control signals for acoustic information generated by the microphone to the calibration component. The interconnect is suitable for use in a system for rendering spatial audio content comprising channel-based and object-based audio components.Type: GrantFiled: August 26, 2013Date of Patent: April 11, 2017Assignee: Dolby Laboratories Licensing CorporationInventors: S. Spencer Hooks, Joshua Brandon Lando, Sripal S. Mehta, Matthew Fellers, Stewart Murrie, Brad Basler
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Publication number: 20170094440Abstract: A method for creating a head-related impulse response (HRIR) for use in rendering audio for playback through headphones comprises receiving location parameters for a sound including azimuth, elevation, and range relative to a head of a listener, applying a spherical head model to the azimuth, elevation, and range input parameters to generate binaural HRIR values, computing a pinna model using the azimuth and elevation parameters to apply to the binaural HRIR values to pinna modeled HRIR values, computing a torso model using the azimuth and elevation parameters to apply to the pinna modeled HRIR values to generate pinna and torso modeled HRIR values, and computing a near-field model using the azimuth and range parameters to apply to the pinna and torso modeled HRIR values to generate pinna, torso and near-field modeled HRIR values.Type: ApplicationFiled: March 4, 2015Publication date: March 30, 2017Applicant: Dolby Laboratories Licensing CorporationInventors: C. Phillip BROWN, Matthew FELLERS, Regunathan RADHAKRISHNAN
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Patent number: 9532158Abstract: Embodiments are described for a system of rendering spatial audio content in a listening environment. The system includes a rendering component configured to generate a plurality of audio channels including information specifying a playback location in a listening area, an upmixer component receiving the plurality of audio channels and generating, for each audio channel, at least one reflected sub-channel configured to cause a majority of driver energy to reflect off of one or more surfaces of the listening area, and at least one direct sub-channel configured to cause a majority of driver energy to propagate directly to the playback location.Type: GrantFiled: August 26, 2013Date of Patent: December 27, 2016Assignee: Dolby Laboratories Licensing CorporationInventors: Joshua Brandon Lando, Matthew Fellers
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Patent number: 9489956Abstract: Received audio data may include a first set of frequency coefficients and a second set of frequency coefficients. Spatial parameters for at least part of the second set of frequency coefficients may be estimated, based at least in part on the first set of frequency coefficients. The estimated spatial parameters may be applied to the second set of frequency coefficients to generate a modified second set of frequency coefficients. The first set of frequency coefficients may correspond to a first frequency range (for example, an individual channel frequency range) and the second set of frequency coefficients may correspond to a second frequency range (for example, a coupled channel frequency range). Combined frequency coefficients of a composite coupling channel may be based on frequency coefficients of two or more channels. Cross-correlation coefficients, between frequency coefficients of a first channel and the combined frequency coefficients, may be computed.Type: GrantFiled: January 22, 2014Date of Patent: November 8, 2016Assignee: Dolby Laboratories Licensing CorporationInventors: Matthew Fellers, Vinay Melkote, Kuan-Chieh Yen, Grant A. Davidson, Mark F. Davis
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Publication number: 20160005406Abstract: Audio characteristics of audio data corresponding to a plurality of audio channels may be determined. The audio characteristics may include spatial parameter data. Decorrelation filtering processes for the audio data may be based, at least in part, on the audio characteristics. The decorrelation filtering processes may cause a specific inter-decorrelation signal coherence (“IDC”) between channel-specific decorrelation signals for at least one pair of channels. The channel-specific decorrelation signals may be received and/or determined. Inter-channel coherence (“ICC”) between a plurality of audio channel pairs may be controlled. Controlling ICC may involve at receiving an ICC value and/or determining an ICC value based, at least partially, on the spatial parameter data. A set of IDC values may be based, at least partially, on the set of ICC values. A set of channel-specific decorrelation signals, corresponding with the set of IDC values, may be synthesized by performing operations on the filtered audio data.Type: ApplicationFiled: January 22, 2014Publication date: January 7, 2016Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Kuan-Chieh YEN, Vinay MELKOTE, Matthew FELLERS, Grant A. DAVIDSON
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Publication number: 20160005413Abstract: Received audio data may include a first set of frequency coefficients and a second set of frequency coefficients. Spatial parameters for at least part of the second set of frequency coefficients may be estimated, based at least in part on the first set of frequency coefficients. The estimated spatial parameters may be applied to the second set of frequency coefficients to generate a modified second set of frequency coefficients. The first set of frequency coefficients may correspond to a first frequency range (for example, an individual channel frequency range) and the second set of frequency coefficients may correspond to a second frequency range (for example, a coupled channel frequency range). Combined frequency coefficients of a composite coupling channel may be based on frequency coefficients of two or more channels. Cross-correlation coefficients, between frequency coefficients of a first channel and the combined frequency coefficients, may be computed.Type: ApplicationFiled: January 22, 2014Publication date: January 7, 2016Applicant: Dolby Laboratories Licensing CorporationInventors: Matthew FELLERS, Vinay MELKOTE, Kuan-Chieh YEN, Grant A. DAVIDSON, Mark F. DAVIS
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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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Publication number: 20150371646Abstract: Decorrelation filter parameters for audio data may be based, at least in part, on audio characteristics such as tonality information and/or transient information. Determining the audio characteristics may involve receiving explicit audio characteristics with the audio data and/or determining audio characteristics based on one or more attributes of the audio data. The decorrelation filter parameters may include dithering parameters and/or randomly selected pole locations for at least one pole of an all-pass filter. The dithering parameters and/or pole locations may involve a maximum stride value for pole movement. In some examples, the maximum stride value may be substantially zero for highly tonal signals of the audio data. The dithering parameters and/or pole locations may be bounded by constraint areas within which pole movements are constrained. The constraint areas may or may not be fixed. In some implementations, different channels of the audio data may share the same constraint areas.Type: ApplicationFiled: January 22, 2014Publication date: December 24, 2015Applicant: Dolby Laboratories Licensing CorporationInventors: Vinay MELKOTE, Kuan-Chieh YEN, Matthew FELLERS, Grant A. DAVIDSON, Vivek KUMAR
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Publication number: 20150271620Abstract: Embodiments are described for a system of rendering spatial audio content in a listening environment. The system includes a rendering component configured to generate a plurality of audio channels including information specifying a playback location in a listening area, an upmixer component receiving the plurality of audio channels and generating, for each audio channel, at least one reflected sub-channel configured to cause a majority of driver energy to reflect off of one or more surfaces of the listening area, and at least one direct sub-channel configured to cause a majority of driver energy to propagate directly to the playback location.Type: ApplicationFiled: August 26, 2013Publication date: September 24, 2015Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Joshua Brandon Lando, Matthew Fellers
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Publication number: 20150208190Abstract: Embodiments are directed to an interconnect for coupling components in an object-based rendering system comprising: a first network channel coupling a renderer to an array of individually addressable drivers projecting sound in a listening environment and transmitting audio signals and control data from the renderer to the array, and a second network channel coupling a microphone placed in the listening environment to a calibration component of the renderer and transmitting calibration control signals for acoustic information generated by the microphone to the calibration component. The interconnect is suitable for use in a system for rendering spatial audio content comprising channel-based and object-based audio components.Type: ApplicationFiled: August 26, 2013Publication date: July 23, 2015Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Spencer S. Hooks, Joshua Brandon Lando, Sripal S. Mehta, Matthew Fellers, Stewart Murrie, Brad Basler
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Patent number: 8693699Abstract: An electroacoustic channel soundfield is altered. An audio signal is applied by an electromechanical transducer to an acoustic space, causing air pressure changes therein. Another audio signal is obtained by a second electromechanical transducer, responsive to air pressure changes in the acoustic space. A transfer function estimate of the electroacoustic channel is established, responsive to the second audio signal and part of the first audio signal. The transfer function estimate is derived to be adaptive to temporal variations in the electroacoustic channel transfer function. Filters are obtained with transfer functions based on the transfer function estimate. Part of the first audio signal is filtered therewith.Type: GrantFiled: July 29, 2009Date of Patent: April 8, 2014Assignee: Dolby Laboratories Licensing CorporationInventors: Matthew Fellers, Grant Davidson, Rongshan Yu, Eric Benjamin, Kenneth Gundry
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Publication number: 20110142247Abstract: An electroacoustic channel soundfield is altered. An audio signal is applied by an electromechanical transducer to an acoustic space, causing air pressure changes therein. Another audio signal is obtained by a second electromechanical transducer, responsive to air pressure changes in the acoustic space. A transfer function estimate of the electroacoustic channel is established, responsive to the second audio signal and part of the first audio signal. The transfer function estimate is derived to be adaptive to temporal variations in the electroacoustic channel transfer function. Filters are obtained with transfer functions based on the transfer function estimate. Part of the first audio signal is filtered therewith.Type: ApplicationFiled: July 29, 2009Publication date: June 16, 2011Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Matthew Fellers, Grant Davidson, Rongshan Yu, Eric Benjamin, Kenneth Gundry
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Publication number: 20080011988Abstract: An activated silicon-containing aluminum complex flame-proofing agent containing minor amounts of halogen, silicon, oxygen and hydrogen. The silicon being present in amounts of at least trace and having a hexagonal structure; the ratio oxygen to hydrogen in the complex usually being 16:18 and the process for making such complex comprises the steps of treating substantial pure aluminum with acid, then with mercury, then with a halogen acid again to form a slurry. The slurry is then applied on paper, paper pulp, cellulose pulp, plywood, clothing, textiles and any structural porous material for flame producing same. Coincidentally, when applied to certain toxic compounds and complexes in a certain way, it renders them non-toxic.Type: ApplicationFiled: July 14, 2006Publication date: January 17, 2008Inventor: Matthew Feller
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Publication number: 20070256602Abstract: An activated silicon-containing aluminum complex reactivator and transforming agent containing minor amounts of halogen, silicon oxygen and hydrogen. The silicon being present in the amounts of at least trace and having a hexagonal structure; the ratio of oxygen to hydrogen being 16:18 and the process for making such complex comprises steps for treating substantially pure aluminum with acid, then with mercury, then with a halogen acid again to form a slurry.Type: ApplicationFiled: May 3, 2006Publication date: November 8, 2007Inventor: Matthew Feller
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Publication number: 20070259793Abstract: The usefulness of the complex of the present invention will extend virtually to any application where soil decontamination of toxic substances would be advantageous. The complex of this invention is capable to break down the composition of most toxic contaminating materials, so that they separate into basic atomic stage and rendering them inactive, therefore in the contaminating soil. Moreover the subject complex is nonpolluting, nontoxic and safe environmentally, having no adverse impact of any kind in the atmosphere, soil or water. It is noncorrosive as well.Type: ApplicationFiled: January 5, 2007Publication date: November 8, 2007Inventor: Matthew Feller