公开(公告)号：US20190325894A1

公开(公告)日：2019-10-24

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：US20180068670A1

公开(公告)日：2018-03-08

申请号：US15808576

申请日：2017-11-09

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Lie LU ,  Alan J. SEEFELDT ,  Jun WANG

IPC: G10L21/02 ,  G10L17/06 ,  G10L25/81

Abstract: Apparatus and methods for audio classifying and processing are disclosed. In one embodiment, an audio processing apparatus includes an audio classifier for classifying an audio signal into at least one audio type in real time; an audio improving device for improving experience of audience; and an adjusting unit for adjusting at least one parameter of the audio improving device in a continuous manner based on the confidence value of the at least one audio type.

公开(公告)号：US20240039499A1

公开(公告)日：2024-02-01

申请号：US18356044

申请日：2023-07-20

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Jun WANG ,  Lie LU ,  Alan J. SEEFELDT

IPC: H03G7/00 ,  H03G3/30 ,  H03G3/32 ,  H03G5/16 ,  G10L25/30 ,  G10L25/51 ,  G10L21/0364

CPC classification number: H03G7/002 ,  H03G3/3089 ,  H03G7/007 ,  H03G3/32 ,  H03G5/165 ,  G10L25/30 ,  G10L25/51 ,  G10L21/0364 ,  H04M7/006

Abstract: Volume leveler controller and controlling method are disclosed. In one embodiment, A volume leveler controller includes an audio content classifier for identifying the content type of an audio signal in real time; and an adjusting unit for adjusting a volume leveler in a continuous manner based on the content type as identified. The adjusting unit may configured to positively correlate the dynamic gain of the volume leveler with informative content types of the audio signal, and negatively correlate the dynamic gain of the volume leveler with interfering content types of the audio signal.

公开(公告)号：US20220116006A1

公开(公告)日：2022-04-14

申请号：US17556722

申请日：2021-12-20

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Jun WANG ,  Lie LU ,  Alan J. SEEFELDT

IPC: H03G7/00 ,  G10L21/0364 ,  G10L25/30 ,  G10L25/51 ,  H03G3/32 ,  H03G5/16 ,  H03G3/30

Abstract: Volume leveler controller and controlling method are disclosed. In one embodiment, A volume leveler controller includes an audio content classifier for identifying the content type of an audio signal in real time; and an adjusting unit for adjusting a volume leveler in a continuous manner based on the content type as identified. The adjusting unit may configured to positively correlate the dynamic gain of the volume leveler with informative content types of the audio signal, and negatively correlate the dynamic gain of the volume leveler with interfering content types of the audio signal.

公开(公告)号：US20200013419A1

公开(公告)日：2020-01-09

申请号：US16577467

申请日：2019-09-20

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Jun WANG ,  Lie LU

IPC: G10L19/02 ,  G10L19/008 ,  G10L25/21

Abstract: Example embodiments disclosed herein relate to signal processing. A method for decomposing a plurality of audio signals from at least two different channels is disclosed. The method comprises obtaining a set of components that are weakly correlated, the set of components generated based on the plurality of audio signals. The method comprises extracting a feature from the set of components, and determining a set of gains associated with the set of components at least in part based on the extracted feature, each of the gains indicating a proportion of a diffuse part in the associated component. The method further comprises decomposing the plurality of audio signals by applying the set of gains to the set of components. Corresponding system and computer program product are also disclosed.

公开(公告)号：US20190122674A1

公开(公告)日：2019-04-25

申请号：US16091069

申请日：2017-04-06

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Jun WANG ,  Lie LU ,  Qingyuan BIN

IPC: G10L19/008 ,  G10L21/0232 ,  H04S7/00 ,  G10L25/21

CPC classification number: G10L19/008 ,  G10L21/0232 ,  G10L21/0272 ,  G10L25/18 ,  G10L25/21 ,  H04S7/30 ,  H04S2400/01

Abstract: The present document describes a method (100) for extracting audio sources (301) from audio channels (302). The method (100) includes updating (102) a Wiener filter matrix based on a mixing matrix from a source matrix and based on a power matrix of the audio sources (301). Furthermore, the method (100) includes updating (103) a cross-covariance matrix of the audio channels (302) and of the audio sources (301) and an auto-covariance matrix of the audio sources (301), based on the updated Wiener filter matrix and based on an auto-covariance matrix of the audio channels (302). In addition, the method (100) includes updating (104) the mixing matrix and the power matrix based on the updated cross-covariance matrix of the audio channels (302) and of the audio sources (301), and/or based on the updated auto-covariance matrix of the audio sources (301).