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公开(公告)号：US20200265849A1
公开(公告)日：2020-08-20
申请号：US16869477
申请日：2020-05-07
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
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.
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公开(公告)号：US20190052991A9
公开(公告)日：2019-02-14
申请号：US15538892
申请日：2016-02-09
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Jun WANG , Lie LU , Lianwu CHEN , Mingqing HU
Abstract: Example embodiments disclosed herein relates to upmixing of audio signals. A method of upmixing an audio signal is described. The method includes decomposing the audio signal into a diffuse signal and a direct signal, generating an audio bed at least in part based on the diffuse signal, the audio bed including a height channel, extracting an audio object from the direct signal, estimating metadata of the audio object, the metadata including height information of the audio object; and rendering the audio bed and the audio object as an upmixed audio signal, wherein the audio bed is rendered to a predefined position and the audio object is rendered according to the metadata. Corresponding system and computer program product are described as well.
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公开(公告)号：US20170026017A1
公开(公告)日：2017-01-26
申请号：US15284953
申请日：2016-10-04
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Jun WANG , Lie LU , Alan SEEFELDT
CPC classification number: H03G7/002 , G10L21/0364 , G10L25/30 , G10L25/51 , H03G3/3089 , H03G3/32 , H03G5/165 , H03G7/007 , H04M7/006 , H04M2203/305
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.
Abstract translation: 公开了卷积矫直机控制器和控制方法。 在一个实施例中，音量调平器控制器包括用于实时地识别音频信号的内容类型的音频内容分类器; 以及调整单元，用于基于所识别的内容类型以连续的方式调整音量调节器。 调整单元可以被配置为使音量调平器的动态增益与音频信号的信息内容类型正相关，并且将音量调平器的动态增益与音频信号的干扰内容类型负相关。
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公开(公告)号：US20160267914A1
公开(公告)日：2016-09-15
申请号：US15031887
申请日：2014-11-25
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Mingqing HU , Lie LU , Jun WANG
IPC: G10L19/02 , G10L19/038 , H04S3/00 , G10L19/008
CPC classification number: G10L19/02 , G10L19/008 , G10L19/038 , H04S3/008 , H04S2400/11
Abstract: Embodiments of the present invention relate to audio object extraction. A method for audio object extraction from audio content of a format based on a plurality of channels is disclosed. The method comprises applying audio object extraction on individual frames of the audio content at least partially based on frequency spectral similarities among the plurality of channels. The method further comprises performing audio object composition across the frames of the audio content, based on the audio object extraction on the individual frames, to generate a track of at least one audio object. Corresponding system and computer program product are also disclosed.
Abstract translation: 本发明的实施例涉及音频对象提取。 公开了一种基于多个频道的格式的音频内容提取音频对象的方法。 该方法包括至少部分地基于多个频道之间的频谱相似度来对音频内容的各个帧应用音频对象提取。 该方法还包括基于在各个帧上的音频对象提取来执行跨音频内容的帧的音频对象组合，以产生至少一个音频对象的轨道。 还公开了相应的系统和计算机程序产品。
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公开(公告)号：US20160049915A1
公开(公告)日：2016-02-18
申请号：US14777271
申请日：2014-03-17
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Jun WANG , Lie LU , Alan SEEFELDT
CPC classification number: H03G7/002 , G10L21/0364 , G10L25/30 , G10L25/51 , H03G3/3089 , H03G3/32 , H03G5/165 , H03G7/007 , H04M7/006 , H04M2203/305
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.
Abstract translation: 公开了卷积矫直机控制器和控制方法。 在一个实施例中，音量调平器控制器包括用于实时地识别音频信号的内容类型的音频内容分类器; 以及调整单元，用于基于所识别的内容类型以连续的方式调整音量调节器。 调整单元可以被配置为使音量调平器的动态增益与音频信号的信息内容类型正相关，并且将音量调平器的动态增益与音频信号的干扰内容类型负相关。
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Patent Agency Ranking
公开(公告)号：US20190191259A1
公开(公告)日：2019-06-20
申请号：US16323763
申请日：2017-08-28
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Jun WANG
Abstract: Embodiments of source separation for reverberant environment are disclosed. According to a method, first microphone signals for each individual one of at least one source are captured respectively by at least two microphones for a period during which only the individual one produces sounds. Mixing parameters for modeling acoustic paths between the at least one source and the at least two microphones are learned by a processor based on the first microphone signals. Second microphone signals are captured respectively by the at least two microphones for a period during which all of the at least one source produce sounds. The reconstruction model is estimated by the processor based on the mixing parameters and second microphone signals. The processor performs the source separation by applying the reconstruction model.
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公开(公告)号：US20170206907A1
公开(公告)日：2017-07-20
申请号：US15326378
申请日：2015-07-14
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
IPC: G10L19/02 , G10L25/21 , G10L19/008
CPC classification number: G10L19/0204 , G10L19/008 , G10L21/0308 , G10L25/21 , H04S3/008
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.
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公开(公告)号：US20170155369A1
公开(公告)日：2017-06-01
申请号：US15432679
申请日：2017-02-14
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Jun WANG , Lie LU , Alan J. SEEFELDT
IPC: H03G7/00 , G10L25/30 , G10L25/51 , H03G5/16 , G10L21/0364
CPC classification number: H03G7/002 , G10L21/0364 , G10L25/30 , G10L25/51 , H03G3/3089 , H03G3/32 , H03G5/165 , H03G7/007 , H04M7/006 , H04M2203/305
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.
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公开(公告)号：US20170133039A1
公开(公告)日：2017-05-11
申请号：US15321741
申请日：2015-06-24
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Claus BAUER , Lie LU , Mingqing HU , Jun WANG , Poppy CRUM , Rhonda WILSON , Regunathan RADHAKRISHNAN
IPC: G10L25/54
CPC classification number: G10L25/54 , G06K9/6259 , G06K9/6261 , 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.
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公开(公告)号：US20160056787A1
公开(公告)日：2016-02-25
申请号：US14780485
申请日：2014-03-17
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Lie LU , Jun WANG , Alan SEEFELDT , Mingqing HU
Abstract: Equalizer controller and controlling method are disclosed. In one embodiment, an equalizer controller includes an audio classifier for identifying the audio type of an audio signal in real time; and an adjusting unit for adjusting an equalizer in a continuous manner based on the confidence value of the audio type as identified.
Abstract translation: 公开了均衡器控制器和控制方法。 在一个实施例中，均衡器控制器包括用于实时地识别音频信号的音频类型的音频分类器; 以及调整单元，用于基于识别的音频类型的置信度值以连续的方式调整均衡器。
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