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公开(公告)号：US20220225022A1
公开(公告)日：2022-07-14
申请号：US17583114
申请日：2022-01-24
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： David S. MCGRATH
Abstract: Disclosed are methods and systems which convert a multi-microphone input signal to a multichannel output signal making use of a time- and frequency-varying matrix. For each time and frequency tile, the matrix is derived as a function of a dominant direction of arrival and a steering strength parameter. Likewise, the dominant direction and steering strength parameter are derived from characteristics of the multi-microphone signals, where those characteristics include values representative of the inter-channel amplitude and group-delay differences.
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公开(公告)号：US20210219052A1
公开(公告)日：2021-07-15
申请号：US15999764
申请日：2017-02-16
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： David S. MCGRATH
Abstract: Disclosed are methods and systems which convert a multi-microphone input signal to a multichannel output signal making use of a time- and frequency-varying matrix. For each time and frequency tile, the matrix is derived as a function of a dominant direction of arrival and a steering strength parameter. Likewise, the dominant direction and steering strength parameter are derived from characteristics of the multi-microphone signals, where those characteristics include values representative of the inter-channel amplitude and group-delay differences.
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公开(公告)号：US20210065724A1
公开(公告)日：2021-03-04
申请号：US17094836
申请日：2020-11-11
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Juan Felix TORRES , David S. MCGRATH , Michael William MASON
IPC: G10L19/008 , H04S5/00
Abstract: Systems, methods, and computer program products of audio processing based on Adaptive Intermediate Spatial Format (AISF) are described. The AISF is an extension to ISF that allows spatial resolution around an ISF ring to be adjusted dynamically with respect to content of incoming audio objects. An AISF encoder device adaptively warps each ISF ring during ISF encoding to adjust angular distance between objects, resulting in increase in uniformity of energy distribution around the ISF ring. At an AISF decoder device, matrices that decode sound positions to the output speaker take into account the warping that was performed at the AISF encoder device to reproduce the true positions of sound sources.
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公开(公告)号：US20170208409A1
公开(公告)日：2017-07-20
申请号：US15480163
申请日：2017-04-05
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Richard J. CARTWRIGHT , David S. MCGRATH , Glenn N. DICKINS
CPC classification number: H04S1/005 , H04M3/568 , H04S7/30 , H04S7/304 , H04S2400/01 , H04S2400/03 , H04S2400/11 , H04S2420/01 , H04S2420/11
Abstract: A computer implemented system for rendering captured audio soundfields to a listener comprises apparatus to deliver the audio soundfields to the listener. The delivery apparatus delivers the audio soundfields to the listener with first and second audio elements perceived by the listener as emanating from first and second virtual source locations, respectively, and with the first audio element and/or the second audio element delivered to the listener from a third virtual source location. The first virtual source location and the second virtual source location are perceived by the listener as being located to the front of the listener, and the third virtual source location is located to the rear or the side of the listener.
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公开(公告)号：US20250150773A1
公开(公告)日：2025-05-08
申请号：US18833065
申请日：2023-01-25
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： David S. MCGRATH
IPC: H04S7/00
Abstract: Methods, systems, and media for determining sound field rotations are provided. In some embodiments, a method for determining sound field rotations involves determining an activity situation of a user. The method may involve determining a user head orientation using at least one sensor of the one or more sensors. The method may involve determining a direction of interest based on the activity situation and the user head orientation. The method may involve determining a rotation of a sound field used to present audio objects via headphones based on the direction of interest.
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Patent Agency Ranking
公开(公告)号：US20240098435A1
公开(公告)日：2024-03-21
申请号：US18469498
申请日：2023-09-18
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Richard J. CARTWRIGHT , David S. MCGRATH , Glenn N. DICKINS
CPC classification number: H04S1/005 , H04M3/568 , H04R3/12 , H04R5/033 , H04R5/04 , H04S7/30 , H04S7/304 , H04S2400/01 , H04S2400/03 , H04S2400/11 , H04S2420/01 , H04S2420/11
Abstract: A computer implemented system for rendering captured audio soundfields to a listener comprises apparatus to deliver the audio soundfields to the listener. The delivery apparatus delivers the audio soundfields to the listener with first and second audio elements perceived by the listener as emanating from first and second virtual source locations, respectively, and with the first audio element and/or the second audio element delivered to the listener from a third virtual source location. The first virtual source location and the second virtual source location are perceived by the listener as being located to the front of the listener, and the third virtual source location is located to the rear or the side of the listener.
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公开(公告)号：US20220060843A1
公开(公告)日：2022-02-24
申请号：US17467112
申请日：2021-09-03
Inventor： Nicolas R. TSINGOS , David S. MCGRATH , Freddie SANCHEZ , Antonio MATEOS SOLE
IPC: H04S7/00
Abstract: The positions of a plurality of speakers at a media consumption site are determined. Audio information in an object-based format is received. Gain adjustment value for a sound content portion in the object-based format may be determined based on the position of the sound content portion and the positions of the plurality of speakers. Audio information in a ring-based channel format is received. Gain adjustment value for each ring-based channel in a set of ring-based channels may be determined based on the ring to which the ring-based channel belongs and the positions of the speakers at a media consumption site.
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公开(公告)号：US20220030370A1
公开(公告)日：2022-01-27
申请号：US17397887
申请日：2021-08-09
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Richard J. CARTWRIGHT , David S. MCGRATH , Glenn N. DICKINS
Abstract: A computer implemented system for rendering captured audio soundfields to a listener comprises apparatus to deliver the audio soundfields to the listener. The delivery apparatus delivers the audio soundfields to the listener with first and second audio elements perceived by the listener as emanating from first and second virtual source locations, respectively, and with the first audio element and/or the second audio element delivered to the listener from a third virtual source location. The first virtual source location and the second virtual source location are perceived by the listener as being located to the front of the listener, and the third virtual source location is located to the rear or the side of the listener.
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19.发明申请公开(公告)号：US20200178015A1
公开(公告)日：2020-06-04
申请号：US16613101
申请日：2018-05-14
Applicant: Dolby Laboratories Licensing Corporation
Inventor： David S. MCGRATH
Abstract: The present disclosure relates to a method of converting an audio signal in an intermediate signal format to a set of speaker feeds suitable for playback by an array of speakers. The audio signal in the intermediate signal format is obtainable from an input audio signal by means of a spatial panning function. The method comprises determining a discrete panning function for the array of speakers, determining a target panning function based on the discrete panning function, wherein determining the target panning function involves smoothing the discrete panning function, and determining a rendering operation for converting the audio signal in the intermediate signal format to the set of speaker feeds, based on the target panning function and the spatial panning function. The present disclosure further relates to a corresponding apparatus and a corresponding computer-readable storage medium.
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公开(公告)号：US20200021935A1
公开(公告)日：2020-01-16
申请号：US16518666
申请日：2019-07-22
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Richard J. CARTWRIGHT , David S. MCGRATH , Glenn N. DICKINS
Abstract: A computer implemented system for rendering captured audio soundfields to a listener comprises apparatus to deliver the audio soundfields to the listener. The delivery apparatus delivers the audio soundfields to the listener with first and second audio elements perceived by the listener as emanating from first and second virtual source locations, respectively, and with the first audio element and/or the second audio element delivered to the listener from a third virtual source location. The first virtual source location and the second virtual source location are perceived by the listener as being located to the front of the listener, and the third virtual source location is located to the rear or the side of the listener.
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