公开(公告)号：US10818302B2

公开(公告)日：2020-10-27

申请号：US16561836

申请日：2019-09-05

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Jun Wang ,  Lie Lu ,  Qingyuan Bin

IPC: G10L19/008 ,  G10L21/0232 ,  G10L25/21 ,  H04S7/00 ,  G10L21/0272 ,  G10L25/18

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

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.

公开(公告)号：US20250126428A1

公开(公告)日：2025-04-17

申请号：US18704402

申请日：2022-10-14

Applicant: Dolby Laboratories Licensing Corporation ,  DOLBY INTERNATIONAL AB

Inventor： Xu Li ,  Giulio Cengarle ,  Qingyuan Bin ,  Michael Getty Horgan

IPC: H04S7/00

Abstract: A method of audio processing includes generating a detection score based on the partial loudnesses of a reference audio signal, extracted audio objects, extracted bed channels, a rendered audio signal and a channel-based audio signal. The detection score is indicative of an audio artifact in one or more of the audio objects and the bed channels. The extracted audio objects and extracted bed channels may be modified, in accordance with the detection score, to reduce the audio artifact.

公开(公告)号：US10410641B2

公开(公告)日：2019-09-10

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 ,  G10L25/21 ,  H04S7/00

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).