公开(公告)号：US11183202B2

公开(公告)日：2021-11-23

申请号：US15745824

申请日：2016-07-26

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Roy M. Fejgin ,  Freddie Sanchez ,  Vinay Melkote ,  Michael Ward

IPC: G10L25/48 ,  G11B27/034 ,  G11B27/038 ,  G11B27/10 ,  G10L25/18

Abstract: Methods for detecting whether a rendered version of a specified seamless connection (“SSC”) at a connection point between two audio segment sequences results in an audible discontinuity, and methods for analyzing at least one SSC between audio segment sequences to determine whether a renderable version of each SSC would have an audible discontinuity at the connection point when rendered, and in appropriate cases, for a SSC having a renderable version which is determined to have an audible discontinuity when rendered, correcting at least one audio segment of at least one segment sequence to be connected in accordance with the SSC in an effort to ensure that rendering of the SSC will result in seamless connection without an audible discontinuity. Other aspects are editing systems configured to implement any of the methods, and storage media and rendering systems which store audio data generated in accordance with any of the methods.

公开(公告)号：US10070243B2

公开(公告)日：2018-09-04

申请号：US15625749

申请日：2017-06-16

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Michael Ward ,  Jeffrey Riedmiller ,  Scott Gregory Norcross ,  Alexander Groeschel

IPC: H04R5/00 ,  H04S7/00 ,  H04S1/00 ,  G10L21/0324 ,  G10L19/008

CPC classification number: H04S7/30 ,  G10L19/008 ,  G10L21/0324 ,  H04S1/002 ,  H04S1/007 ,  H04S2400/03 ,  H04S2400/13

Abstract: Audio content coded for a reference speaker configuration is downmixed to downmix audio content coded for a specific speaker configuration. One or more gain adjustments are performed on individual portions of the downmix audio content coded for the specific speaker configuration. Loudness measurements are then performed on the individual portions of the downmix audio content. An audio signal that comprises the audio content coded for the reference speaker configuration and downmix loudness metadata is generated. The downmix loudness metadata is created based at least in part on the loudness measurements on the individual portions of the downmix audio content.

公开(公告)号：US12183354B2

公开(公告)日：2024-12-31

申请号：US18511495

申请日：2023-11-16

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Jeffrey Riedmiller ,  Michael Ward

IPC: G10L19/00 ,  G10L19/008 ,  G10L19/018 ,  G10L19/16 ,  G10L19/22

Abstract: An audio processing unit (APU) is disclosed. The APU includes a buffer memory configured to store at least one frame of an encoded audio bitstream, where the encoded audio bitstream includes audio data and a metadata container. The metadata container includes a header and one or more metadata payloads after the header. The one or more metadata payloads include dynamic range compression (DRC) metadata, and the DRC metadata is or includes profile metadata indicative of whether the DRC metadata includes dynamic range compression (DRC) control values for use in performing dynamic range compression in accordance with at least one compression profile on audio content indicated by at least one block of the audio data.

公开(公告)号：US20200219523A1

公开(公告)日：2020-07-09

申请号：US16820160

申请日：2020-03-16

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Jeffrey Riedmiller ,  Michael Ward

IPC: G10L19/16 ,  G10L19/018 ,  G10L19/22 ,  G10L19/008

Abstract: An audio processing unit (APU) is disclosed. The APU includes a buffer memory configured to store at least one frame of an encoded audio bitstream, where the encoded audio bitstream includes audio data and a metadata container. The metadata container includes a header and one or more metadata payloads after the header. The one or more metadata payloads include dynamic range compression (DRC) metadata, and the DRC metadata is or includes profile metadata indicative of whether the DRC metadata includes dynamic range compression (DRC) control values for use in performing dynamic range compression in accordance with at least one compression profile on audio content indicated by at least one block of the audio data.

公开(公告)号：US10672413B2

公开(公告)日：2020-06-02

申请号：US15818102

申请日：2017-11-20

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Michael Grant ,  Scott Gregory Norcross ,  Jeffrey Riedmiller ,  Michael Ward

IPC: G10L19/16 ,  G10L19/002 ,  G10L19/06 ,  H03G9/00 ,  H03G9/02

Abstract: Apparatus and methods for generating an encoded audio bitstream, including by including program loudness metadata and audio data in the bitstream, and optionally also program boundary metadata in at least one segment (e.g., frame) of the bitstream. Other aspects are apparatus and methods for decoding such a bitstream, e.g., including by performing adaptive loudness processing of the audio data of an audio program indicated by the bitstream, or authentication and/or validation of metadata and/or audio data of such an audio program. Another aspect is an audio processing unit (e.g., an encoder, decoder, or post-processor) configured (e.g., programmed) to perform any embodiment of the method or which includes a buffer memory which stores at least one frame of an audio bitstream generated in accordance with any embodiment of the method.

公开(公告)号：US20190335285A1

公开(公告)日：2019-10-31

申请号：US16505448

申请日：2019-07-08

Applicant: Dolby Laboratories Licensing Corporation ,  Apollo Building,3E Herikerbergweg 1-35

Inventor： Michael Ward ,  Jeffrey Riedmiller ,  Scott Gregory Norcross ,  Alexander Stahlmann

IPC: H04S7/00 ,  G10L19/008 ,  H04S1/00 ,  G10L21/0324

Abstract: Audio content coded for a reference speaker configuration is downmixed to downmix audio content coded for a specific speaker configuration. One or more gain adjustments are performed on individual portions of the downmix audio content coded for the specific speaker configuration. Loudness measurements are then performed on the individual portions of the downmix audio content. An audio signal that comprises the audio content coded for the reference speaker configuration and downmix loudness metadata is generated. The downmix loudness metadata is created based at least in part on the loudness measurements on the individual portions of the downmix audio content.

公开(公告)号：US20190028827A1

公开(公告)日：2019-01-24

申请号：US16115292

申请日：2018-08-28

Applicant: Dolby Laboratories Licensing Corporation ,  Dolby International AB

Inventor： Michael Ward ,  Jeffrey Riedmiller ,  Scott Gregory Norcross ,  Alexander Stahlmann

IPC: H04S7/00 ,  G10L19/008 ,  G10L21/0324 ,  H04S1/00

CPC classification number: H04S7/30 ,  G10L19/008 ,  G10L21/0324 ,  H04S1/002 ,  H04S1/007 ,  H04S2400/03 ,  H04S2400/13

Abstract: Audio content coded for a reference speaker configuration is downmixed to downmix audio content coded for a specific speaker configuration. One or more gain adjustments are performed on individual portions of the downmix audio content coded for the specific speaker configuration. Loudness measurements are then performed on the individual portions of the downmix audio content. An audio signal that comprises the audio content coded for the reference speaker configuration and downmix loudness metadata is generated. The downmix loudness metadata is created based at least in part on the loudness measurements on the individual portions of the downmix audio content.

公开(公告)号：US09959878B2

公开(公告)日：2018-05-01

申请号：US15189710

申请日：2016-06-22

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Jeffrey Riedmiller ,  Michael Ward

IPC: G10L19/00 ,  G10L19/16 ,  G10L19/018 ,  G10L19/22 ,  G10L19/008

CPC classification number: G10L19/167 ,  G10L19/008 ,  G10L19/018 ,  G10L19/22

Abstract: An audio processing unit (APU) is disclosed. The APU includes a buffer memory configured to store at least one frame of an encoded audio bitstream, where the encoded audio bitstream includes audio data and a metadata container. The metadata container includes a header and one or more metadata payloads after the header. The one or more metadata payloads include dynamic range compression (DRC) metadata, and the DRC metadata is or includes profile metadata indicative of whether the DRC metadata includes dynamic range compression (DRC) control values for use in performing dynamic range compression in accordance with at least one compression profile on audio content indicated by at least one block of the audio data.

公开(公告)号：US20180108367A1

公开(公告)日：2018-04-19

申请号：US15818102

申请日：2017-11-20

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Michael Grant ,  Scott Gregory Norcross ,  Jeffrey Riedmiller ,  Michael Ward

IPC: G10L19/16 ,  G10L19/002 ,  G10L19/06

Abstract: Apparatus and methods for generating an encoded audio bitstream, including by including program loudness metadata and audio data in the bitstream, and optionally also program boundary metadata in at least one segment (e.g., frame) of the bitstream. Other aspects are apparatus and methods for decoding such a bitstream, e.g., including by performing adaptive loudness processing of the audio data of an audio program indicated by the bitstream, or authentication and/or validation of metadata and/or audio data of such an audio program. Another aspect is an audio processing unit (e.g., an encoder, decoder, or post-processor) configured (e.g., programmed) to perform any embodiment of the method or which includes a buffer memory which stores at least one frame of an audio bitstream generated in accordance with any embodiment of the method.

公开(公告)号：US09905237B2

公开(公告)日：2018-02-27

申请号：US15491661

申请日：2017-04-19

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Michael Grant ,  Scott Gregory Norcross ,  Jeffrey Riedmiller ,  Michael Ward

IPC: G10L19/16 ,  H03G9/00 ,  G10L19/002 ,  H03G9/02

CPC classification number: G10L19/167 ,  G10L19/002 ,  G10L19/06 ,  H03G9/005 ,  H03G9/025

Abstract: Apparatus and methods for generating an encoded audio bitstream, including by including program loudness metadata and audio data in the bitstream, and optionally also program boundary metadata in at least one segment (e.g., frame) of the bitstream. Other aspects are apparatus and methods for decoding such a bitstream, e.g., including by performing adaptive loudness processing of the audio data of an audio program indicated by the bitstream, or authentication and/or validation of metadata and/or audio data of such an audio program. Another aspect is an audio processing unit (e.g., an encoder, decoder, or post-processor) configured (e.g., programmed) to perform any embodiment of the method or which includes a buffer memory which stores at least one frame of an audio bitstream generated in accordance with any embodiment of the method.