公开(公告)号：US20230360662A1

公开(公告)日：2023-11-09

申请号：US18026281

申请日：2021-09-15

Applicant: Dolby Laboratories Licensing Corporation ,  Dolby International AB

Inventor： Zhiwei Shuang ,  Yuanxing Ma ,  Yang Liu ,  Ziyu Yang ,  Giulio Cengarle

IPC: G10L21/0208 ,  H04S1/00

CPC classification number: G10L21/0208 ,  H04S1/007 ,  G10L2021/02166

Abstract: The present invention relates to a method and device for processing a first and a second audio signal representing an input binaural audio signal acquired by a binaural recording device. The present invention further relates to a method for rendering a binaural audio signal on a speaker system. The method for processing a binaural signal comprising extracting audio information from the first audio signal, computing a band gain for reducing noise in the first audio signal and applying the band gains to respective frequency bands of the first audio signal in accordance with a dynamic scaling factor, to provide a first output audio signal. Wherein the dynamic scaling factor has a value between zero and one and is selected so as to reduce quality degradation for the first audio signal.

公开(公告)号：US12177647B2

公开(公告)日：2024-12-24

申请号：US18690133

申请日：2022-09-08

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Ziyu Yang ,  Lie Lu ,  Heiko Purnhagen ,  Jeremy Grant Stoddard ,  Dirk Jeroen Breebaart

IPC: H04S7/00

Abstract: Systems and methods for preserving headphone rendering mode (HRM) in object clustering are described. In an embodiment, an object-based audio data processing system includes a processor configured to receive a plurality of audio objects, wherein an audio object of the plurality of audio objects is associated with respective object metadata that indicates respective spatial position information and an HRM; determine a plurality of cluster positions by applying an extended hybrid distance metric to a spatial coding algorithm to calculate a partial loudness for each of the audio objects; render the audio objects to the cluster positions to form a plurality of clusters by applying the extended hybrid distance metric to the spatial coding algorithm to calculate object-to-cluster gains; and transmit the clusters to a spatial reproduction system.

公开(公告)号：US20240334146A1

公开(公告)日：2024-10-03

申请号：US18690133

申请日：2022-09-08

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Ziyu Yang ,  Lie Lu ,  Heiko Purnhagen ,  Jeremy Grant Stoddard ,  Dirk Jeroen Breebaart

IPC: H04S7/00

CPC classification number: H04S7/302 ,  H04S2400/11 ,  H04S2420/01

Abstract: Systems and methods for preserving headphone rendering mode (HRM) in object clustering are described. In an embodiment, an object-based audio data processing system includes a processor configured to receive a plurality of audio objects, wherein an audio object of the plurality of audio objects is associated with respective object metadata that indicates respective spatial position information and an HRM; determine a plurality of cluster positions by applying an extended hybrid distance metric to a spatial coding algorithm to calculate a partial loudness for each of the audio objects; render the audio objects to the cluster positions to form a plurality of clusters by applying the extended hybrid distance metric to the spatial coding algorithm to calculate object-to-cluster gains; and transmit the clusters to a spatial reproduction system.

公开(公告)号：US20240187807A1

公开(公告)日：2024-06-06

申请号：US18547006

申请日：2022-02-15

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Ziyu Yang ,  Lie Lu

IPC: H04S7/00

CPC classification number: H04S7/30 ,  H04S2400/11

Abstract: A method for clustering audio objects may involve identifying a plurality of audio objects, wherein each audio object of the plurality of audio objects is associated with respective metadata that indicates respective spatial position information and respective rendering metadata. The method may involve assigning audio objects of the plurality of audio objects to categories of rendering metadata of a plurality of categories of rendering metadata, wherein at least one category of rendering metadata comprises a plurality of types of rendering metadata to be preserved. The method may involve determining an allocation of a plurality of audio object clusters to each category of rendering metadata. The method may involve rendering audio objects of the plurality of audio objects to an allocated plurality of audio object clusters based on the metadata that indicates spatial position information and based on the assignments of the audio objects to the categories of rendering metadata.

公开(公告)号：US11929091B2

公开(公告)日：2024-03-12

申请号：US17683662

申请日：2022-03-01

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Chunmao Zhang ,  Lianwu Chen ,  Ziyu Yang ,  Joshua Brandon Lando ,  David Matthew Fischer ,  Lie Lu

IPC: G10L25/78 ,  G06N3/08 ,  G10L25/30 ,  H04R5/033 ,  H04R5/04 ,  H04S1/00

CPC classification number: G10L25/78 ,  G06N3/08 ,  G10L25/30 ,  H04R5/033 ,  H04R5/04 ,  H04S1/002 ,  H04R2420/07

Abstract: An apparatus and method of blind detection of binauralized audio. If the input content is detected as binaural, a second binauralization may be avoided. In this manner, the user experience avoids audio artifacts introduced by multiple binauralizations.

公开(公告)号：US11264050B2

公开(公告)日：2022-03-01

申请号：US17050786

申请日：2019-04-24

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Chunmao Zhang ,  Lianwu Chen ,  Ziyu Yang ,  Joshua Brandon Lando ,  David Matthew Fischer ,  Lie Lu

IPC: G10L25/78 ,  G06N3/08 ,  G10L25/30 ,  H04R5/033 ,  H04R5/04 ,  H04S1/00

Abstract: An apparatus and method of blind detection of binauralized audio. If the input content is detected as binaural, a second binauralization may be avoided. In this manner, the user experience avoids audio artifacts introduced by multiple binauralizations.

公开(公告)号：US20240355348A1

公开(公告)日：2024-10-24

申请号：US18685656

申请日：2022-08-23

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Ziyu Yang ,  Zhiwei Shuang ,  Lie Lu

IPC: G10L21/0216 ,  G10L21/0264

CPC classification number: G10L21/0216 ,  G10L21/0264

Abstract: A method of audio processing includes classifying an audio signal as noise or as non-noise using a first model. For a noise signal. the audio signal is classified as user-generated content (UGC) noise or as professionally-generated content (PGC) noise using a second model. For a non-noise signal or PGC noise. the audio signal is processed using a first audio processing process. For UGC noise. the audio signal is processed using a second audio processing process.

公开(公告)号：US11895479B2

公开(公告)日：2024-02-06

申请号：US17637446

申请日：2020-08-19

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Qingyuan Bin ,  Libin Luo ,  Ziyu Yang ,  Zhiwei Shuang ,  Xuemei Yu ,  Guiping Wang

IPC: H04S7/00

CPC classification number: H04S7/30 ,  H04S2420/01

Abstract: A method for steering binauralization of audio is provided. The method comprises steps of: receiving (410) an audio input signal, calculating (430) a confidence value indicating a likelihood that a current audio frame of the audio input signal comprises binauralized audio; determining (450) a state signal based on the confidence value; determining (460) a steering signal, based on the first confidence value, the state signal and an energy value of the audio frame; and generating (470) an audio output signal with steered binauralization by processing the audio input signal according to the steering signal.