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公开(公告)号：US10306392B2
公开(公告)日：2019-05-28
申请号：US15772383
申请日：2016-11-02
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Xin Liu , Lie Lu , Alan J. Seefeldt
Abstract: Example embodiments disclosed herein relate to content-adaptive surround sound virtualization. A method of virtualizing surround sound is disclosed. The method includes receiving a set of input audio signals, each of the input audio signals being indicative of sound from one of different sound sources, and determining a probability of the set of input audio signals belonging to a predefined audio content category. The method also includes determining a virtualization amount based on the determined probability, the virtualization amount indicating to which extent the set of input audio signals is virtualized as surround sound. The method further includes performing surround sound virtualization on two or more input audio signals in the set based on the determined virtualization amount and generating output audio signals based on the virtualized input audio signals and other input audio signals in the set. Corresponding system and computer program product for virtualizing surround sound are also disclosed.
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公开(公告)号：US12118987B2
公开(公告)日：2024-10-15
申请号：US17604379
申请日：2020-04-13
Applicant: Dolby Laboratories Licensing Corporation
CPC classification number: G10L15/197 , G10L15/02 , G10L15/04 , G10L15/22 , G10L25/18 , G10L25/81 , H04S1/007 , H04S2400/03
Abstract: The present application relates to a method of extracting audio features in a dialog detector in response to an input audio signal, the method comprising dividing the input audio signal into a plurality of frames, extracting frame audio features from each frame, determining a set of context windows, each context window including a number of frames surrounding a current frame, deriving, for each context window, a relevant context audio feature for the current frame based on the frame audio features of the frames in each respective context, and concatenating each context audio feature to form a combined feature vector to represent the current frame. The context windows with the different length can improve the response speed and improve robustness.
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公开(公告)号：US20180324540A1
公开(公告)日：2018-11-08
申请号：US15772383
申请日：2016-11-02
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Xin Liu , Lie LU , Alan J. Seefeldt
CPC classification number: H04S5/005 , G06F17/18 , G06F17/30743 , H04R1/26 , H04S5/00 , H04S7/30 , H04S7/307 , H04S2400/03 , H04S2420/01
Abstract: Example embodiments disclosed herein relate to content-adaptive surround sound virtualization. A method of virtualizing surround sound is disclosed. The method includes receiving a set of input audio signals, each of the input audio signals being indicative of sound from one of different sound sources, and determining a probability of the set of input audio signals belonging to a predefined audio content category. The method also includes determining a virtualization amount based on the determined probability, the virtualization amount indicating to which extent the set of input audio signals is virtualized as surround sound. The method further includes performing surround sound virtualization on two or more input audio signals in the set based on the determined virtualization amount and generating output audio signals based on the virtualized input audio signals and other input audio signals in the set. Corresponding system and computer program product for virtualizing surround sound are also disclosed.
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