公开(公告)号：US20240031768A1

公开(公告)日：2024-01-25

申请号：US18353063

申请日：2023-07-15

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Nicolas R. TSINGOS ,  David S. MCGRATH ,  Freddie SANCHEZ ,  Antonio MATEOS SOLE

IPC: H04S7/00

CPC classification number: H04S7/308 ,  H04S2400/11 ,  H04S2400/13

Abstract: The positions of a plurality of speakers at a media consumption site are determined. Audio information in an object-based format is received. Gain adjustment value for a sound content portion in the object-based format may be determined based on the position of the sound content portion and the positions of the plurality of speakers. Audio information in a ring-based channel format is received. Gain adjustment value for each ring-based channel in a set of ring-based channels may be determined based on the ring to which the ring-based channel belongs and the positions of the speakers at a media consumption site.

公开(公告)号：US20240013793A1

公开(公告)日：2024-01-11

申请号：US18255232

申请日：2021-12-02

Applicant: Dolby Laboratories Licensing Corporation ,  DOLBY INTERNATIONAL AB

Inventor： Stefan BRUHN ,  Harald MUNDT ,  David S. MCGRATH ,  Stefanie BROWN

IPC: G10L19/008 ,  G10L19/002 ,  G10L19/032

CPC classification number: G10L19/008 ,  G10L19/002 ,  G10L19/032

Abstract: Method for encoding scene-based audio is provided. In some implementations, the method involves determining, by an encoder, a spatial direction of a dominant sound component in a frame of an input audio signal. In some implementations, the method involves determining rotation parameters based on the determined spatial direction and a direction preference of a coding scheme to be used to encode the input audio signal. In some implementations, the method involves rotating sound components of the frame based on the rotation parameters such that, after being rotated, the dominant sound component has a spatial direction that aligns with the direction preference of the coding scheme. In some implementations, the method involves encoding the rotated sound components of the frame of the input audio signal using the coding scheme in connection with an indication of the rotation parameters or an indication of the spatial direction of the dominant sound component.

公开(公告)号：US20230343346A1

公开(公告)日：2023-10-26

申请号：US18008445

申请日：2021-06-10

Applicant: Dolby Laboratories Licensing Corporation

Inventor： David S. MCGRATH ,  Rishabh TYAGI ,  Stefanie BROWN ,  Juan Felix Torres

IPC: G10L19/032 ,  G10L19/008

CPC classification number: G10L19/032 ,  G10L19/008

Abstract: Described is a method of frame-wise encoding metadata for an input signal, the metadata comprising a plurality of at least partially interrelated parameters calculable from the input signal. The method comprises, for each frame: iteratively performing, by using a looping process, steps of: determining a processing strategy from a plurality of processing strategies for calculating and quantizing the parameters; calculating and quantizing the parameters based on the determined processing strategy to obtain quantized parameters; and encoding the quantized parameters. In particular, each of the plurality of processing strategies comprises a respective first indication indicative of an ordering related to the calculation and quantization of individual parameters; and the processing strategy is determined based on at least one bitrate threshold.

公开(公告)号：US20180352366A1

公开(公告)日：2018-12-06

申请号：US16017715

申请日：2018-06-25

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Nicolas R. TSINGOS ,  David S. MCGRATH ,  Freddie SANCHEZ ,  Antonio MATEOS SOLE

IPC: H04S7/00

CPC classification number: H04S7/308 ,  H04S2400/11 ,  H04S2400/13

Abstract: The positions of a plurality of speakers at a media consumption site are determined. Audio information in an object-based format is received. Gain adjustment value for a sound content portion in the object-based format may be determined based on the position of the sound content portion and the positions of the plurality of speakers. Audio information in a ring-based channel format is received. Gain adjustment value for each ring-based channel in a set of ring-based channels may be determined based on the ring to which the ring-based channel belongs and the positions of the speakers at a media consumption site.

公开(公告)号：US20180122384A1

公开(公告)日：2018-05-03

申请号：US15566200

申请日：2016-04-14

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Vinay MELKOTE ,  David S. MCGRATH

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

CPC classification number: G10L19/008 ,  G10L19/0017 ,  H04S3/008 ,  H04S2400/01 ,  H04S2400/11

Abstract: Methods for generating encoded audio programs indicative of N channels of discontinuity-corrected, encoded audio content, including by applying discontinuity correction values to multi-channel audio content, and for rendering such a program (e.g., to generate a discontinuity-corrected M-channel mix of content indicated by the program). Other aspects are systems or devices (e.g., encoders or decoders, or rendering systems) configured to implement any of the methods.

公开(公告)号：US20160295343A1

公开(公告)日：2016-10-06

申请号：US15037193

申请日：2014-11-21

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Nicolas R. TSINGOS ,  David S. MCGRATH ,  Freddie SANCHEZ ,  Antonio MATEOS SOLE

IPC: H04S7/00

CPC classification number: H04S7/308 ,  H04S2400/11 ,  H04S2400/13

Abstract: The positions of a plurality of speakers at a media consumption site are determined. Audio information in an object-based format is received. Gain adjustment value for a sound content portion in the object-based format may be determined based on the position of the sound content portion and the positions of the plurality of speakers. Audio information in a ring-based channel format is received. Gain adjustment value for each ring-based channel in a set of ring-based channels may be determined based on the ring to which the ring-based channel belongs and the positions of the speakers at a media consumption site.

Abstract translation: 确定媒体消费站点处的多个扬声器的位置。 接收基于对象的格式的音频信息。 可以基于声音内容部分的位置和多个扬声器的位置来确定基于对象的格式的声音内容部分的增益调整值。 接收基于环的频道格式的音频信息。 可以基于基于环的频道所属的环和媒体消费站点处的扬声器的位置来确定一组基于环的频道中的每个基于环的频道的增益调整值。

公开(公告)号：US20250159427A1

公开(公告)日：2025-05-15

申请号：US18955846

申请日：2024-11-21

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Nicolas R. TSINGOS ,  David S. MCGRATH ,  Freddie SANCHEZ ,  Antonio MATEOS SOLE

IPC: H04S7/00

Abstract: The positions of a plurality of speakers at a media consumption site are determined. Audio information in an object-based format is received. Gain adjustment value for a sound content portion in the object-based format may be determined based on the position of the sound content portion and the positions of the plurality of speakers. Audio information in a ring-based channel format is received. Gain adjustment value for each ring-based channel in a set of ring-based channels may be determined based on the ring to which the ring-based channel belongs and the positions of the speakers at a media consumption site.

公开(公告)号：US20240005933A1

公开(公告)日：2024-01-04

申请号：US18349427

申请日：2023-07-10

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： David S. MCGRATH ,  Michael ECKERT ,  Heiko PURNHAGEN ,  Stefan BRUHN

IPC: G10L19/16 ,  G10L19/008 ,  G10L19/18

CPC classification number: G10L19/167 ,  G10L19/008 ,  G10L19/18

Abstract: The present document describes a method (700) for encoding a multi-channel input signal (201). The method (700) comprises determining (701) a plurality of downmix channel signals (203) from the multi-channel input signal (201) and performing (702) energy compaction of the plurality of downmix channel signals (203) to provide a plurality of compacted channel signals (404). Furthermore, the method (700) comprises determining (703) joint coding metadata (205) based on the plurality of compacted channel signals (404) and based on the multi-channel input signal (201), wherein the joint coding metadata (205) is such that it allows upmixing of the plurality of compacted channel signals (404) to an approximation of the multi-channel input signal (201). In addition, the method (700) comprises encoding (704) the plurality of compacted channel signals (404) and the joint coding metadata (205).

公开(公告)号：US20230230600A1

公开(公告)日：2023-07-20

申请号：US18158032

申请日：2023-01-23

Applicant: Dolby Laboratories Licensing Corporation

Inventor： David S. MCGRATH

IPC: G10L19/008 ,  H04S3/00

CPC classification number: G10L19/008 ,  H04S3/008

Abstract: Some methods involve receiving an input audio signal that includes N input audio channels, the input audio signal representing a first soundfield format having a first soundfield format resolution, N being an integer ≥2. A first decorrelation process may be applied to two or more of the input audio channels to produce a first set of decorrelated channels, the first decorrelation process maintaining an inter-channel correlation of the set of input audio channels. A first modulation process may be applied to the first set of decorrelated channels to produce a first set of decorrelated and modulated output channels. The first set of decorrelated and modulated output channels may be combined with two or more undecorrelated output channels to produce an output audio signal that includes O output audio channels representing a second and relatively higher-resolution soundfield format than the first soundfield format, O being an integer ≥3.

公开(公告)号：US20220277757A1

公开(公告)日：2022-09-01

申请号：US17632225

申请日：2020-07-31

Applicant: Dolby Laboratories Licensing Corporation

Inventor： David S. MCGRATH ,  Stefanie BROWN ,  Juan Felix TORRES

IPC: G10L21/0208 ,  G10L19/26 ,  G10L25/18

Abstract: Methods and systems for improving signal processing by smoothing the covariance matrix of a multi-channel signal by setting a forgetting factor based on the bins of a band. A method and system for resetting the smoothing based on transient detection is also disclosed. A method and system for resampling for the smoothing during a banding transition is also disclosed.