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公开(公告)号：US12143797B2
公开(公告)日：2024-11-12
申请号：US18309145
申请日：2023-04-28
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Louis D. Fielder , Zhiwei Shuang , Grant A. Davidson , Xiguang Zheng , Mark S. Vinton
Abstract: The present disclosure relates to reverberation generation for headphone virtualization. A method of generating one or more components of a binaural room impulse response (BRIR) for headphone virtualization is described. In the method, directionally-controlled reflections are generated, wherein directionally-controlled reflections impart a desired perceptual cue to an audio input signal corresponding to a sound source location. Then at least the generated reflections are combined to obtain the one or more components of the BRIR. Corresponding system and computer program products are described as well.
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公开(公告)号：US10553224B2
公开(公告)日：2020-02-04
申请号：US16150112
申请日：2018-10-02
Inventor： Janusz Klejsa , Roy M. Fejgin , Mark S. Vinton
IPC: G10L19/008 , G10L19/00
Abstract: A method for performing inter-channel encoding of a multi-channel audio signal comprising channel signals for N channels, with N being an integer, with N>1, is described. The method comprises determining a basic graph comprising the N channels as nodes and comprising directed edges between at least some of the N channels. Furthermore, the method comprises determining an inter-channel coding graph from the basic graph, such that the inter-channel coding graph is a directed acyclic graph, and such that a cumulated a cumulated cost of the signals of the nodes of the inter-channel coding graph is reduced.
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公开(公告)号：US10008218B2
公开(公告)日：2018-06-26
申请号：US15667359
申请日：2017-08-02
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Chih-Wei Wu , Mark S. Vinton
IPC: H04R3/00 , G10L21/0388 , G10L19/26
CPC classification number: G10L21/0388 , G10L19/26
Abstract: A system and method of blind bandwidth extension. The system selects a prediction model from a number of stored prediction models that were generated using an unsupervised clustering method (e.g., a k-means method) and a supervised regression process (e.g., a support vector machine), and extends the bandwidth of an input musical audio signal.
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公开(公告)号：US09767816B2
公开(公告)日：2017-09-19
申请号：US15473808
申请日：2017-03-30
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Michael M. Truman , Mark S. Vinton
IPC: G10L19/02 , G10L19/028 , G10L19/26 , G10L21/038 , G10L21/0388
CPC classification number: G10L19/0208 , G10L19/0017 , G10L19/002 , G10L19/012 , G10L19/02 , G10L19/0204 , G10L19/0212 , G10L19/028 , G10L19/03 , G10L19/06 , G10L19/16 , G10L19/167 , G10L19/173 , G10L19/26 , G10L19/265 , G10L21/00 , G10L21/038 , G10L21/0388
Abstract: According to an aspect of the present invention, a method for reconstructing an audio signal having a baseband portion and a highband portion is disclosed. The method includes obtaining a decoded baseband audio signal by decoding an encoded audio signal and obtaining a plurality of subband signals by filtering the decoded baseband audio signal. The method further includes generating a high-frequency reconstructed signal by copying a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal. The method further includes generating a noise component based on a noise parameter. Finally, the method includes adjusting a phase of the high-frequency reconstructed signal and obtaining a time-domain reconstructed audio signal by combining the decoded baseband audio signal and the combined high-frequency signal to obtain a time-domain reconstructed audio signal.
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5.发明授权公开(公告)号：US09653085B2
公开(公告)日：2017-05-16
申请号：US15370085
申请日：2016-12-06
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Michael M. Truman , Mark S. Vinton
IPC: G10L21/038 , G10L21/0388 , G10L19/02 , G10L19/012 , G10L19/26 , G10L19/16 , G10L19/002
CPC classification number: G10L19/0208 , G10L19/0017 , G10L19/002 , G10L19/012 , G10L19/02 , G10L19/0204 , G10L19/0212 , G10L19/028 , G10L19/03 , G10L19/06 , G10L19/16 , G10L19/167 , G10L19/173 , G10L19/26 , G10L19/265 , G10L21/00 , G10L21/038 , G10L21/0388
Abstract: A method and system for reconstructing an original audio signal is disclosed. The original audio signal has a baseband up to a cutoff frequency and high-frequency components not included in the baseband above the cutoff frequency. The system includes a bitstream deformatter that extracts a representation of the baseband, an estimated spectral envelope, and noise-blending parameters from an audio bitstream. The system also includes a spectral component regenerator that copies or translates all or at least some of the baseband spectral components to non-overlapping frequency ranges of the high-frequency components not included in the baseband to generate regenerated spectral components. The system further includes a gain adjuster that modifies a spectral envelope of the regenerated spectral components based at least in part on the estimated spectral envelope and the noise-blending parameters to generate gain-adjusted regenerated spectral components.
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Patent Agency Ranking
公开(公告)号：US20160379655A1
公开(公告)日：2016-12-29
申请号：US15258415
申请日：2016-09-07
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Michael M. Truman , Mark S. Vinton
IPC: G10L19/03 , G10L19/012 , G10L19/16 , G10L19/02
CPC classification number: G10L19/0208 , G10L19/0017 , G10L19/002 , G10L19/012 , G10L19/02 , G10L19/0204 , G10L19/0212 , G10L19/028 , G10L19/03 , G10L19/06 , G10L19/16 , G10L19/167 , G10L19/173 , G10L19/26 , G10L19/265 , G10L21/00 , G10L21/038 , G10L21/0388
Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes extracting temporal envelope information and spectral components of the baseband portion. The method further includes obtaining a decoded baseband audio signal. The obtaining includes filtering in a frequency domain at least some of the spectral components of the baseband portion with the reconstruction filter using the temporal envelope information to shape a temporal envelope of the baseband portion. The method also includes extracting a noise parameter and an estimated spectral envelope of the highband portion and obtaining a plurality of subband signals by filtering the decoded baseband audio signal. The method further includes generating a high-frequency reconstructed signal by copying a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal by adjusting, based on the estimated spectral envelope of the highband portion, a spectral envelope of the high-frequency reconstructed signal.
Abstract translation: 公开了一种用于产生具有基带部分和高带部分的重构音频信号的方法。 该方法包括提取基带部分的时间包络信息和频谱分量。 该方法还包括获得解码的基带音频信号。 所述获取包括使用所述时间包络信息，利用重构滤波器在频域中对基带部分的至少一些频谱分量进行滤波，以形成基带部分的时间包络。 该方法还包括提取高频部分的噪声参数和估计的频谱包络，并通过对解码的基带音频信号进行滤波来获得多个子带信号。 该方法还包括通过复制多个子带信号中的多个连续的子带信号来产生高频重建信号，并且通过基于估计的高频带部分的频谱包络来调整光谱，从而获得包络调整的高频信号 高频重构信号的包络。
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公开(公告)号：US20160232905A1
公开(公告)日：2016-08-11
申请号：US15133367
申请日：2016-04-20
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Michael M. Truman , Mark S. Vinton
IPC: G10L19/028 , G10L19/06 , G10L19/26 , G10L19/02
CPC classification number: G10L19/0208 , G10L19/0017 , G10L19/002 , G10L19/012 , G10L19/02 , G10L19/0204 , G10L19/0212 , G10L19/028 , G10L19/03 , G10L19/06 , G10L19/16 , G10L19/167 , G10L19/173 , G10L19/26 , G10L19/265 , G10L21/00 , G10L21/038 , G10L21/0388
Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes deformatting an encoded audio signal into a first part and a second part and extracting, from the first part, temporal envelope information and spectral components of the baseband portion. The method further includes decoding the first part to obtain a decoded baseband audio signal. The decoding includes filtering in a frequency domain at least some of the spectral components of the baseband portion with the reconstruction filter using the temporal envelope information to shape a temporal envelope of the baseband portion. The method also includes extracting, from the second part, a noise parameter and an estimated spectral envelope of the highband portion and obtaining a plurality of subband signals by filtering the decoded baseband audio signal. The method further includes generating a high-frequency reconstructed signal by copying a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal by adjusting, based on the estimated spectral envelope of the highband portion, a spectral envelope of the high-frequency reconstructed signal.
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公开(公告)号：US09412388B1
公开(公告)日：2016-08-09
申请号：US15133367
申请日：2016-04-20
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Michael M. Truman , Mark S. Vinton
IPC: G10L21/0388 , G10L21/038 , G10L19/028 , G10L19/02 , G10L19/06 , G10L19/26
CPC classification number: G10L19/0208 , G10L19/0017 , G10L19/002 , G10L19/012 , G10L19/02 , G10L19/0204 , G10L19/0212 , G10L19/028 , G10L19/03 , G10L19/06 , G10L19/16 , G10L19/167 , G10L19/173 , G10L19/26 , G10L19/265 , G10L21/00 , G10L21/038 , G10L21/0388
Abstract: A method for generating a reconstructed audio signal having a baseband portion and a highband portion is disclosed. The method includes deformatting an encoded audio signal into a first part and a second part and extracting, from the first part, temporal envelope information and spectral components of the baseband portion. The method further includes decoding the first part to obtain a decoded baseband audio signal. The decoding includes filtering in a frequency domain at least some of the spectral components of the baseband portion with the reconstruction filter using the temporal envelope information to shape a temporal envelope of the baseband portion. The method also includes extracting, from the second part, a noise parameter and an estimated spectral envelope of the highband portion and obtaining a plurality of subband signals by filtering the decoded baseband audio signal. The method further includes generating a high-frequency reconstructed signal by copying a number of consecutive subband signals of the plurality of subband signals and obtaining an envelope adjusted high-frequency signal by adjusting, based on the estimated spectral envelope of the highband portion, a spectral envelope of the high-frequency reconstructed signal.
Abstract translation: 公开了一种用于产生具有基带部分和高带部分的重构音频信号的方法。 该方法包括将经编码的音频信号解压缩成第一部分和第二部分，并从第一部分提取基带部分的时间包络信息和频谱分量。 该方法还包括解码第一部分以获得解码的基带音频信号。 解码包括使用时间包络信息使用重建滤波器在频域中对基带部分的至少一些频谱分量进行滤波，以形成基带部分的时间包络。 该方法还包括从第二部分提取高频部分的噪声参数和估计频谱包络，并通过对解码的基带音频信号进行滤波来获得多个子带信号。 该方法还包括通过复制多个子带信号中的多个连续的子带信号来产生高频重建信号，并且通过基于估计的高频带部分的频谱包络来调整光谱，从而获得包络调整的高频信号 高频重构信号的包络。
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公开(公告)号：US09324328B2
公开(公告)日：2016-04-26
申请号：US14709109
申请日：2015-05-11
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Michael M. Truman , Mark S. Vinton
IPC: G10L19/00 , G10L21/0388 , G10L21/038 , G10L19/012 , G10L21/00 , G10L19/02
CPC classification number: G10L19/0208 , G10L19/0017 , G10L19/002 , G10L19/012 , G10L19/02 , G10L19/0204 , G10L19/0212 , G10L19/028 , G10L19/03 , G10L19/06 , G10L19/16 , G10L19/167 , G10L19/173 , G10L19/26 , G10L19/265 , G10L21/00 , G10L21/038 , G10L21/0388
Abstract: A method for reconstructing an audio signal having a baseband portion and a highband portion is disclosed. The method includes decoding an encoded audio signal to obtain a decoded baseband audio signal, filtering the decoded baseband audio signal to obtain subband signals, and generating a high-frequency reconstructed signal by copying a number of consecutive subband signals. The method also includes adjusting a spectral envelope of the high-frequency reconstructed signal based on an estimated spectral envelope of the highband portion extracted from the encoded audio signal to obtain an envelope adjusted high-frequency signal, generating a noise component based on a noise parameter extracted from the encoded audio signal, and adding the noise component to the envelope adjusted high-frequency signal to obtain a noise and envelope adjusted high-frequency signal.
Abstract translation: 公开了一种用于重建具有基带部分和高频带部分的音频信号的方法。 该方法包括解码编码音频信号以获得解码的基带音频信号，对解码的基带音频信号进行滤波以获得子带信号，以及通过复制多个连续子带信号来产生高频重构信号。 该方法还包括基于从编码音频信号提取的高频部分的估计频谱包络来调整高频重构信号的频谱包络，以获得包络调整的高频信号，基于噪声参数产生噪声分量 从编码音频信号中提取，并将噪声分量加到包络调节的高频信号上以获得噪声和包络调整的高频信号。
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公开(公告)号：US09173025B2
公开(公告)日：2015-10-27
申请号：US13964037
申请日：2013-08-09
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Glenn N. Dickins , Timothy J. Neal , Mark S. Vinton
IPC: H04B15/00 , H04R3/00 , G10L21/0208 , H04R1/10 , H04R3/02 , G10K11/16 , G10L21/0216 , H04R1/40
CPC classification number: H04R3/002 , G10L21/0208 , G10L2021/02082 , G10L2021/02166 , H04R1/1083 , H04R1/406 , H04R3/005 , H04R3/02 , H04R2410/07 , H04R2430/03 , H04R2499/13
Abstract: A system, a method, logic embodied in a computer-readable medium, and a computer-readable medium comprising instructions that when executed carry out a method. The method processes: (a) a plurality of input signals, e.g., signals from a plurality of spatially separated microphones; and, for echo suppression, (b) one or more reference signals, e.g., signals from or to be rendered by one or more loudspeakers and that can cause echoes. The method processes the input signals and one or more reference signals to carry out in an integrated manner simultaneous noise suppression and out-of-location signal suppression, and in some versions, echo suppression.
Abstract translation: 包含在计算机可读介质中的系统，方法，逻辑以及包括指令的计算机可读介质，所述指令在执行时执行方法。 该方法处理：（a）多个输入信号，例如来自多个空间分离的麦克风的信号; 并且，对于回波抑制，（b）一个或多个参考信号，例如来自或要由一个或多个扬声器呈现并且可以引起回声的信号。 该方法处理输入信号和一个或多个参考信号以集成的方式执行同时噪声抑制和失调信号抑制，并且在一些版本中，进行回波抑制。
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