公开(公告)号：US10748555B2

公开(公告)日：2020-08-18

申请号：US16455178

申请日：2019-06-27

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Claus Bauer ,  Lie Lu ,  Mingqing Hu ,  Jun Wang ,  Poppy Crum ,  Rhonda Wilson ,  Regunathan Radhakrishnan

IPC: G10L25/54 ,  G06K9/62 ,  G10L25/03

Abstract: Example embodiments disclosed herein relate to perception based multimedia processing. There is provided a method for processing multimedia data, the method includes automatically determining user perception on a segment of the multimedia data based on a plurality of clusters, the plurality of clusters obtained in association with predefined user perceptions and processing the segment of the multimedia data at least in part based on determined user perception on the segment. Corresponding system and computer program products are disclosed as well.

公开(公告)号：US10425763B2

公开(公告)日：2019-09-24

申请号：US15109541

申请日：2014-12-18

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Kuan-Chieh Yen ,  Dirk Jeroen Breebaart ,  Grant A. Davidson ,  Rhonda Wilson ,  David M. Cooper ,  Zhiwei Shuang

IPC: H04S7/00 ,  H04S3/00 ,  G10L19/008

Abstract: In some embodiments, virtualization methods for generating a binaural signal in response to channels of a multi-channel audio signal, which apply a binaural room impulse response (BRIR) to each channel including by using at least one feed-back delay network (FDN) to apply a common late reverberation to a downmix of the channels. In some embodiments, input signal channels are processed in a first processing path to apply to each channel a direct response and early reflection portion of a single-channel BRIR for the channel, and the downmix of the channels is processed in a second processing path including at least one FDN which applies the common late reverberation. Typically, the common late reverberation emulates collective macro attributes of late reverberation portions of at least some of the single-channel BRIRs. Other aspects are headphone virtualizers configured to perform any embodiment of the method.

公开(公告)号：US09826327B2

公开(公告)日：2017-11-21

申请号：US15024925

申请日：2014-09-26

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Malcolm James Law ,  Vinay Melkote ,  Rhonda Wilson ,  Simon Plain ,  Andy Jaspar

IPC: H04S3/02 ,  G10L19/018 ,  G10L19/24 ,  G10L19/008

CPC classification number: H04S3/02 ,  G10L19/008 ,  G10L19/018 ,  G10L19/24 ,  H04S2400/03

Abstract: Methods which uses interpolated primitive matrices to decode encoded audio to recover (losslessly) content of a multichannel audio program and/or to recover at least one downmix of such content, and encoding methods for generating such encoded audio. In some embodiments, a decoder performs interpolation on a set of seed primitive matrices to determine interpolated matrices for use in rendering channels of the program. Other aspects are a system or device configured to implement any embodiment of the method.

公开(公告)号：US09622014B2

公开(公告)日：2017-04-11

申请号：US14409440

申请日：2013-06-17

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Christophe Chabanne ,  Brett Crockett ,  Spencer Hooks ,  Alan Seefeldt ,  Nicolas R. Tsingos ,  Mark Tuffy ,  Rhonda Wilson

IPC: H04S7/00 ,  H04S3/00

CPC classification number: H04S7/305 ,  H04S3/008 ,  H04S2400/03 ,  H04S2420/03

Abstract: Embodiments are described for a method and system of rendering and playing back spatial audio content using a channel-based format. Spatial audio content that is played back through legacy channel-based equipment is transformed into the appropriate channel-based format resulting in the loss of certain positional information within the audio objects and positional metadata comprising the spatial audio content. To retain this information for use in spatial audio equipment even after the audio content is rendered as channel-based audio, certain metadata generated by the spatial audio processor is incorporated into the channel-based data. The channel-based audio can then be sent to a channel-based audio decoder or a spatial audio decoder. The spatial audio decoder processes the metadata to recover at least some positional information that was lost during the down-mix operation by upmixing the channel-based audio content back to the spatial audio content for optimal playback in a spatial audio environment.

公开(公告)号：US20230091218A1

公开(公告)日：2023-03-23

申请号：US18060232

申请日：2022-11-30

Applicant: Dolby Laboratories Licensing Corporation

Inventor： C. Phillip Brown ,  Joshua Brandon Lando ,  Mark F. Davis ,  Alan J. Seefeldt ,  David Matthew Cooper ,  Dirk Jeroen Breebaart ,  Rhonda Wilson

IPC: H04S7/00

Abstract: A system and method of modifying a binaural signal using headtracking information. The system calculates a delay, a first filter response, and a second filter response, and applies these to the left and right components of the binaural signal according to the headtracking information. The system may also apply headtracking to parametric binaural signals. In this manner, headtracking may be applied to pre-rendered binaural audio.

公开(公告)号：US20210168553A1

公开(公告)日：2021-06-03

申请号：US17167442

申请日：2021-02-04

Applicant: Dolby Laboratories Licensing Corporation

Inventor： C. Phillip Brown ,  Joshua Brandon Lando ,  Mark F. Davis ,  Alan J. Seefeldt ,  David Matthew Cooper ,  Dirk Jeroen Breebaart ,  Rhonda Wilson

IPC: H04S7/00

Abstract: A system and method of modifying a binaural signal using headtracking information. The system calculates a delay, a first filter response, and a second filter response, and applies these to the left and right components of the binaural signal according to the headtracking information. The system may also apply headtracking to parametric binaural signals. In this manner, headtracking may be applied to pre-rendered binaural audio.

公开(公告)号：US10771914B2

公开(公告)日：2020-09-08

申请号：US16777599

申请日：2020-01-30

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Kuan-Chieh Yen ,  Dirk Jeroen Breebaart ,  Grant A. Davidson ,  Rhonda Wilson ,  David M. Cooper ,  Zhiwei Shuang

IPC: H04S7/00 ,  G10L19/008 ,  H04S3/00

Abstract: In some embodiments, virtualization methods for generating a binaural signal in response to channels of a multi-channel audio signal, which apply a binaural room impulse response (BRIR) to each channel including by using at least one feedback delay network (FDN) to apply a common late reverberation to a downmix of the channels. In some embodiments, input signal channels are processed in a first processing path to apply to each channel a direct response and early reflection portion of a single-channel BRIR for the channel, and the downmix of the channels is processed in a second processing path including at least one FDN which applies the common late reverberation. Typically, the common late reverberation emulates collective macro attributes of late reverberation portions of at least some of the single-channel BRIRs. Other aspects are headphone virtualizers configured to perform any embodiment of the method.

公开(公告)号：US10255027B2

公开(公告)日：2019-04-09

申请号：US15934849

申请日：2018-03-23

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Nicolas R. Tsingos ,  Rhonda Wilson ,  Sunil Bharitkar ,  C. Phillip Brown ,  Alan J. Seefeldt ,  Remi Audfray

IPC: H04S3/02 ,  H04S5/00 ,  H04S5/02 ,  G06F3/16 ,  H04S7/00 ,  H04R5/04 ,  H04S1/00 ,  G06F3/0484

Abstract: Embodiments are described for a method of rendering audio for playback through headphones comprising receiving digital audio content, receiving binaural rendering metadata generated by an authoring tool processing the received digital audio content, receiving playback metadata generated by a playback device, and combining the binaural rendering metadata and playback metadata to optimize playback of the digital audio content through the headphones.

公开(公告)号：US09805725B2

公开(公告)日：2017-10-31

申请号：US14654460

申请日：2013-11-25

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Brett G. Crockett ,  Alan J. Seefeldt ,  Nicolas R. Tsingos ,  Rhonda Wilson ,  Dirk Jeroen Breebaart ,  Lie Lu ,  Lianwu Chen

IPC: H04R5/00 ,  G10L19/008 ,  G10L25/18 ,  G10L19/02 ,  H04S7/00 ,  G10L19/20

CPC classification number: G10L19/008 ,  G10L19/02 ,  G10L19/20 ,  G10L25/18 ,  H04S7/30 ,  H04S2400/13 ,  H04S2420/03

Abstract: Embodiments are directed a method of rendering object-based audio comprising determining an initial spatial position of objects having object audio data and associated metadata, determining a perceptual importance of the objects, and grouping the audio objects into a number of clusters based on the determined perceptual importance of the objects, such that a spatial error caused by moving an object from an initial spatial position to a second spatial position in a cluster is minimized for objects with a relatively high perceptual importance. The perceptual importance is based at least in part by a partial loudness of an object and content semantics of the object.

公开(公告)号：US12061835B2

公开(公告)日：2024-08-13

申请号：US18305618

申请日：2023-04-24

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Nicolas R. Tsingos ,  Rhonda Wilson ,  Sunil Bharitkar ,  C. Phillip Brown ,  Alan J. Seefeldt ,  Remi Audfray

IPC: H04S3/02 ,  G06F3/16 ,  H04R5/04 ,  H04S1/00 ,  H04S5/00 ,  H04S5/02 ,  H04S7/00 ,  G06F3/04842

CPC classification number: G06F3/162 ,  G06F3/165 ,  H04R5/04 ,  H04S1/007 ,  H04S7/304 ,  H04S7/306 ,  G06F3/04842 ,  H04S2400/03 ,  H04S2400/13 ,  H04S2420/01

Abstract: Embodiments are described for a method of rendering audio for playback through headphones comprising receiving digital audio content, receiving binaural rendering metadata generated by an authoring tool processing the received digital audio content, receiving playback metadata generated by a playback device, and combining the binaural rendering metadata and playback metadata to optimize playback of the digital audio content through the headphones.