公开(公告)号：US20180095718A1

公开(公告)日：2018-04-05

申请号：US15835241

申请日：2017-12-07

Applicant: Dolby Laboratories Licensing Corporation ,  DOLBY INTERNATIONAL AB

Inventor： Jeffrey RIEDMILLER ,  Scott Gregory NORCROSS ,  Karl Jonas ROEDEN

IPC: G06F3/16 ,  H04R29/00 ,  H03G9/00

Abstract: Embodiments are directed to a method and system for receiving, in a bitstream, metadata associated with the audio data, and analyzing the metadata to determine whether a loudness parameter for a first group of audio playback devices are available in the bitstream. Responsive to determining that the parameters are present for the first group, the system uses the parameters and audio data to render audio. Responsive to determining that the loudness parameters are not present for the first group, the system analyzes one or more characteristics of the first group, and determines the parameter based on the one or more characteristics.

公开(公告)号：US20180012609A1

公开(公告)日：2018-01-11

申请号：US15677919

申请日：2017-08-15

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Jeroen KOPPENS ,  Scott Gregory NORCROSS

IPC: G10L19/16 ,  G10L21/034 ,  G10L19/24

Abstract: This disclosure falls into the field of audio coding, in particular it is related to the field of providing a framework for providing loudness consistency among differing audio output signals. In particular, the disclosure relates to methods, computer program products and apparatus for encoding and decoding of audio data bitstreams in order to attain a desired loudness level of an output audio signal.

公开(公告)号：US20170249951A1

公开(公告)日：2017-08-31

申请号：US15517482

申请日：2015-10-06

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Jeroen KOPPENS ,  Scott Gregory NORCROSS

IPC: G10L19/16 ,  G10L19/24 ,  G10L21/034

CPC classification number: G10L19/167 ,  G10L19/24 ,  G10L21/034

Abstract: This disclosure falls into the field of audio coding, in particular it is related to the field of providing a framework for providing loudness consistency among differing audio output signals. In particular, the disclosure relates to methods, computer program products and apparatus for encoding and decoding of audio data bitstreams in order to attain a desired loudness level of an output audio signal.

公开(公告)号：US20240428815A1

公开(公告)日：2024-12-26

申请号：US18820818

申请日：2024-08-30

Applicant: Dolby Laboratories Licensing Corporation ,  DOLBY INTERNATIONAL AB

Inventor： Jeroen KOPPENS ,  Scott Gregory NORCROSS

IPC: G10L19/16 ,  G10L19/24 ,  G10L21/034

Abstract: This disclosure falls into the field of audio coding, in particular it is related to the field of providing a framework for providing loudness consistency among differing audio output signals. In particular, the disclosure relates to methods, computer program products and apparatus for encoding and decoding of audio data bitstreams in order to attain a desired loudness level of an output audio signal.

公开(公告)号：US20240355338A1

公开(公告)日：2024-10-24

申请号：US18685413

申请日：2022-08-24

Applicant: Dolby Laboratories Licensing Corporation ,  DOLBY INTERNATIONAL AB

Inventor： Christof FERSCH ,  Scott Gregory NORCROSS

IPC: G10L19/00 ,  G10L25/03

CPC classification number: G10L19/00 ,  G10L25/03

Abstract: Described herein is a method of metadata-based dynamic processing of audio data for playback, the method including: receiving, by a decoder, a bitstream including audio data and metadata for dynamic loudness adjustment; decoding, by the decoder, the audio data and the metadata to obtain decoded audio data and the metadata; determining, by the decoder, from the metadata, one or more processing parameters for dynamic loudness adjustment based on a playback condition; applying the determined one or more processing parameters to the decoded audio data to obtain processed audio data; and outputting the processed audio data for playback. Described is further a method of encoding audio data and metadata for dynamic loudness adjustment into a bitstream. Moreover, described are a respective decoder and encoder, a respective system and computer program products.

公开(公告)号：US20200258534A1

公开(公告)日：2020-08-13

申请号：US16790352

申请日：2020-02-13

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Jeroen KOPPENS ,  Scott Gregory NORCROSS

IPC: G10L19/16 ,  G10L21/034 ,  G10L19/24

Abstract: This disclosure falls into the field of audio coding, in particular it is related to the field of providing a framework for providing loudness consistency among differing audio output signals. In particular, the disclosure relates to methods, computer program products and apparatus for encoding and decoding of audio data bitstreams in order to attain a desired loudness level of an output audio signal.

公开(公告)号：US20170221496A1

公开(公告)日：2017-08-03

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

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.

公开(公告)号：US20240103801A1

公开(公告)日：2024-03-28

申请号：US18483082

申请日：2023-10-09

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Jeffrey RIEDMILLER ,  Scott Gregory NORCROSS ,  Karl Jonas ROEDEN

IPC: G06F3/16 ,  H03G9/00 ,  H04R29/00

CPC classification number: G06F3/165 ,  H03G9/005 ,  H04R29/00

Abstract: Embodiments are directed to a method and system for receiving, in a bitstream, metadata associated with the audio data, and analyzing the metadata to determine whether a loudness parameter for a first group of audio playback devices are available in the bitstream. Responsive to determining that the parameters are present for the first group, the system uses the parameters and audio data to render audio. Responsive to determining that the loudness parameters are not present for the first group, the system analyzes one or more characteristics of the first group, and determines the parameter based on the one or more characteristics.

公开(公告)号：US20180151188A1

公开(公告)日：2018-05-31

申请号：US15877808

申请日：2018-01-23

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Michael GRANT ,  Scott Gregory NORCROSS ,  Jeffrey RIEDMILLER ,  Michael WARD

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

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：US20170311107A1

公开(公告)日：2017-10-26

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: H04S7/00 ,  G10L21/0324 ,  G10L19/008 ,  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.