公开(公告)号：US11582574B2

公开(公告)日：2023-02-14

申请号：US17560301

申请日：2021-12-23

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 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：US10555109B2

公开(公告)日：2020-02-04

申请号：US16541079

申请日：2019-08-14

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

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：US11671779B2

公开(公告)日：2023-06-06

申请号：US17492683

申请日：2021-10-04

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Louis D. Fielder ,  Zhiwei Shuang ,  Grant A. Davidson ,  Xiguang Zheng ,  Mark S. Vinton

IPC: H04S3/00 ,  H04S7/00 ,  H04S5/00 ,  G10K15/08

CPC classification number: H04S3/004 ,  G10K15/08 ,  H04S5/005 ,  H04S7/302 ,  H04S7/304 ,  H04S2400/01 ,  H04S2420/01

Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.

公开(公告)号：US20220103959A1

公开(公告)日：2022-03-31

申请号：US17492683

申请日：2021-10-04

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Louis D. Fielder ,  Zhiwei Shuang ,  Grant A. Davidson ,  Xiguang Zheng ,  Mark S. Vinton

IPC: H04S3/00 ,  H04S7/00 ,  G10K15/08 ,  H04S5/00

Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.

公开(公告)号：US11212638B2

公开(公告)日：2021-12-28

申请号：US17012076

申请日：2020-09-04

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：US11140501B2

公开(公告)日：2021-10-05

申请号：US16986308

申请日：2020-08-06

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Louis D. Fielder ,  Zhiwei Shuang ,  Grant A. Davidson ,  Xiguang Zheng ,  Mark S. Vinton

IPC: H04S3/00 ,  H04S7/00 ,  H04S5/00 ,  G10K15/08

Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.

公开(公告)号：US10834519B2

公开(公告)日：2020-11-10

申请号：US16749494

申请日：2020-01-22

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Grant A. Davidson ,  Kuan-Chieh Yen ,  Dirk Jeroen Breebaart

IPC: H04S7/00

Abstract: Methods and systems for designing binaural room impulse responses (BRIRs) for use in headphone virtualizers, and methods and systems for generating a binaural signal in response to a set of channels of a multi-channel audio signal, including by applying a BRIR to each channel of the set, thereby generating filtered signals, and combining the filtered signals to generate the binaural signal, where each BRIR has been designed in accordance with an embodiment of the design method. Other aspects are audio processing units configured to perform any embodiment of the inventive method. In accordance with some embodiments, BRIR design is formulated as a numerical optimization problem based on a simulation model (which generates candidate BRIRs) and at least one objective function (which evaluates each candidate BRIR), and includes identification of a best one of the candidate BRIRs as indicated by performance metrics determined for the candidate BRIRs by each objective function.

公开(公告)号：US10750306B2

公开(公告)日：2020-08-18

申请号：US16510849

申请日：2019-07-12

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Louis D. Fielder ,  Zhiwei Shuang ,  Grant A. Davidson ,  Xiguang Zheng ,  Mark S. Vinton

IPC: H04S3/00 ,  H04S7/00 ,  H04S5/00 ,  G10K15/08

Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.

公开(公告)号：US10547963B2

公开(公告)日：2020-01-28

申请号：US16538671

申请日：2019-08-12

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Grant A. Davidson ,  Kuan-Chieh Yen ,  Dirk Jeroen Breebaart

IPC: H04S7/00

Abstract: Methods and systems for designing binaural room impulse responses (BRIRs) for use in headphone virtualizers, and methods and systems for generating a binaural signal in response to a set of channels of a multi-channel audio signal, including by applying a BRIR to each channel of the set, thereby generating filtered signals, and combining the filtered signals to generate the binaural signal, where each BRIR has been designed in accordance with an embodiment of the design method. Other aspects are audio processing units configured to perform any embodiment of the inventive method. In accordance with some embodiments, BRIR design is formulated as a numerical optimization problem based on a simulation model (which generates candidate BRIRs) and at least one objective function (which evaluates each candidate BRIR), and includes identification of a best one of the candidate BRIRs as indicated by performance metrics determined for the candidate BRIRs by each objective function.