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    System and method for adaptive audio signal generation, coding and rendering
    42.
    发明授权
    System and method for adaptive audio signal generation, coding and rendering 有权

    公开(公告)号：US11412342B2

    公开(公告)日：2022-08-09

    申请号：US17156459

    申请日：2021-01-22

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Charles Q. Robinson ,  Nicolas R. Tsingos ,  Christophe Chabanne

    IPC: H04S7/00 ,  H04R27/00 ,  H04S3/00 ,  H04R5/02 ,  H04R5/04 ,  H04S5/00 ,  G10L19/20 ,  G10L19/008

    Abstract: Embodiments are described for an adaptive audio system that processes audio data comprising a number of independent monophonic audio streams. One or more of the streams has associated with it metadata that specifies whether the stream is a channel-based or object-based stream. Channel-based streams have rendering information encoded by means of channel name; and the object-based streams have location information encoded through location expressions encoded in the associated metadata. A codec packages the independent audio streams into a single serial bitstream that contains all of the audio data. This configuration allows for the sound to be rendered according to an allocentric frame of reference, in which the rendering location of a sound is based on the characteristics of the playback environment (e.g., room size, shape, etc.) to correspond to the mixer's intent. The object position metadata contains the appropriate allocentric frame of reference information required to play the sound correctly using the available speaker positions in a room that is set up to play the adaptive audio content.

    Methods, apparatus and systems for audio reproduction
    44.
    发明授权
    Methods, apparatus and systems for audio reproduction 有权

    公开(公告)号：US10939219B2

    公开(公告)日：2021-03-02

    申请号：US16688713

    申请日：2019-11-19

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Christophe Chabanne ,  Nicolas R. Tsingos ,  Charles Q. Robinson

    IPC: H04S3/00 ,  H04R5/02 ,  H04S7/00 ,  H04R1/40

    Abstract: Audio perception in local proximity to visual cues is provided. A device includes a video display, first row of audio transducers, and second row of audio transducers. The first and second rows can be vertically disposed above and below the video display. An audio transducer of the first row and an audio transducer of the second row form a column to produce, in concert, an audible signal. The perceived emanation of the audible signal is from a plane of the video display (e.g., a location of a visual cue) by weighing outputs of the audio transducers of the column. In certain embodiments, the audio transducers are spaced farther apart at a periphery for increased fidelity in a center portion of the plane and less fidelity at the periphery.

    Active acoustics control for near- and far-field sounds
    45.
    发明授权
    Active acoustics control for near- and far-field sounds 有权

    公开(公告)号：US10531222B2

    公开(公告)日：2020-01-07

    申请号：US16162895

    申请日：2018-10-17

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Nicolas R. Tsingos

    IPC: H04S7/00 ,  G10L21/0232 ,  H04R5/02 ,  H04R5/04 ,  H04R3/12 ,  G10L21/0208

    Abstract: Some disclosed methods may involve receiving audio reproduction data, including audio objects, differentiating near-field audio objects and far-field audio objects in the audio reproduction data, and rendering the far-field audio objects into speaker feed signals for room speakers of a reproduction environment. Each speaker feed signal may correspond to at least one of the room speakers. The near-field audio objects may be rendered into speaker feed signals for near-field speakers and/or headphone speakers of the reproduction environment. Reverberant audio objects may be generated based on physical microphone data from physical microphones in the reproduction environment and from virtual microphone data that is calculated for near-field audio objects. The reverberant audio objects may be rendered into speaker feed signals for the room speakers.

    Adaptive Quantization
    46.
    发明授权
    Adaptive Quantization 有权

    公开(公告)号：US10395664B2

    公开(公告)日：2019-08-27

    申请号：US16072168

    申请日：2017-01-26

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Nicolas R. Tsingos ,  Zachary Gideon Cohen ,  Vivek Kumar

    IPC: G10L19/032 ,  G10L19/20 ,  G10L19/002 ,  G10L19/00 ,  H03M1/00

    Abstract: An importance metric, based at least in part on an energy metric, may be determined for each of a plurality of received audio objects. Some methods may involve: determining a global importance metric for all of the audio objects, based, at least in part, on a total energy value calculated by summing the energy metric of each of the audio objects; determining an estimated quantization bit depth and a quantization error for each of the audio objects; calculating a total noise metric for all of the audio objects, the total noise metric being based, at least in part, on a total quantization error corresponding with the estimated quantization bit depth; calculating a total signal-to-noise ratio corresponding with the total noise metric and the total energy value; and determining a final quantization bit depth for each of the audio objects by applying a signal-to-noise ratio threshold to the total signal-to-noise ratio.

    Rendering audio using speakers organized as a mesh of arbitrary N-gons
    50.
    发明授权
    Rendering audio using speakers organized as a mesh of arbitrary N-gons 有权

    公开(公告)号：US09756444B2

    公开(公告)日：2017-09-05

    申请号：US14780159

    申请日：2014-03-19

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Nicolas R. Tsingos

    IPC: H04S3/00

    CPC classification number: H04S3/002 ,  H04S2400/11

    Abstract: In some embodiments, a method for rendering an audio program indicative of at least one source, including by panning the source along a trajectory comprising source locations using speakers organized as a mesh whose faces are convex N-gons, where N can vary from face to face, and N is not equal to three for at least one face of the mesh, including steps of: for each source location, determining an intersecting face of the mesh (including the source location's projection on the mesh), thereby determining a subset of the speakers whose positions coincide with the intersecting face's vertices, and determining gains (which may be determined by generalized barycentric coordinates) for speaker feeds for driving each speaker subset to emit sound perceived as emitting from the source location corresponding to the subset. Other aspects include systems configured (e.g., programmed) to perform any embodiment of the method.

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