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    Structural modeling of the head related impulse response
    2.
    发明授权
    Structural modeling of the head related impulse response 有权

    公开(公告)号：US10142761B2

    公开(公告)日：2018-11-27

    申请号：US15123934

    申请日：2015-03-04

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： C. Phillip Brown ,  Matthew Fellers ,  Regunathan Radhakrishnan

    IPC: H04S7/00 ,  H04S1/00

    Abstract: A method for creating a head-related impulse response (HRIR) for use in rendering audio for playback through headphones comprises receiving location parameters for a sound including azimuth, elevation, and range relative to a head of a listener, applying a spherical head model to the azimuth, elevation, and range input parameters to generate binaural HRIR values, computing a pinna model using the azimuth and elevation parameters to apply to the binaural HRIR values to pinna modeled HRIR values, computing a torso model using the azimuth and elevation parameters to apply to the pinna modeled HRIR values to generate pinna and torso modeled HRIR values, and computing a near-field model using the azimuth and range parameters to apply to the pinna and torso modeled HRIR values to generate pinna, torso and near-field modeled HRIR values.

    Embedding data in stereo audio using saturation parameter modulation
    3.
    发明授权
    Embedding data in stereo audio using saturation parameter modulation 有权
    使用饱和参数调制将数据嵌入立体声音频

    公开(公告)号：US09357326B2

    公开(公告)日：2016-05-31

    申请号：US14412882

    申请日：2013-07-03

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Regunathan Radhakrishnan ,  Mark F. Davis

    IPC: H04R5/00 ,  H04S7/00 ,  G10L19/018 ,  H04S1/00

    CPC classification number: H04S7/30 ,  G10L19/018 ,  H04S1/00 ,  H04S2420/03

    Abstract: In some embodiments, a method for embedding data (e.g., metadata for use during post-processing) in a stereo audio signal comprising frames. Each of the frames has a saturation value, and data are embedded in the stereo audio signal by modifying the signal to generate a modulated stereo audio signal comprising a sequence of modulated frames having modulated saturation values indicative of the embedded data. Typically, one data bit is embedded in each frame of an input stereo audio signal by modifying the frame to produce a modulated frame whose modulated saturation value matches a target value indicative of the data bit. In other embodiments, a method for extracting data from a stereo audio signal in which the data have been embedded in accordance with an embodiment of the inventive embedding method. Other aspects are systems (e.g., programmed processors) configured to perform any embodiment of the inventive method.

    Abstract translation: 在一些实施例中，一种用于将数据（例如，后处理期间使用的元数据）嵌入到包括帧的立体声音频信号中的方法。 每个帧具有饱和值，并且通过修改信号来将数据嵌入在立体声音频信号中，以产生包含调制的帧序列的调制立体声音频信号，调制后的帧具有指示嵌入数据的调制饱和度值。 通常，通过修改帧来产生调制的帧，其调制饱和值与指示数据位的目标值相匹配，一个数据位嵌入在输入立体声音频信号的每个帧中。 在其他实施例中，根据本发明的嵌入方法的实施例，从立体声音频信号中提取数据的方法，其中已经嵌入了数据。 其他方面是被配置为执行本发明方法的任何实施例的系统（例如，编程处理器）。

    Audio Data Hiding Based on Perceptual Masking and Detection based on Code Multiplexing
    4.
    发明申请
    Audio Data Hiding Based on Perceptual Masking and Detection based on Code Multiplexing 有权
    基于代码复用的感知掩蔽和检测的音频数据隐藏

    公开(公告)号：US20140129011A1

    公开(公告)日：2014-05-08

    申请号：US14066366

    申请日：2013-10-29

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Regunathan Radhakrishnan ,  Michael Smithers ,  David S. McGrath

    IPC: G10L19/018

    CPC classification number: G10L19/018

    Abstract: A spread spectrum data hiding for audio signals is described. A set of pseudo-random noise sequences is added to an audio signal according to a data to be embedded. A masking curve is used to shape the added noise. A transient detection step can be used to control whether a shaped noise sequence is to be added or not. Embedded information is detected by first performing a whitening step and then performing a phase-only correlation with a same set of pseudo-random noise sequences. A detection method that is based on correlation of multiplexed noise sequences with a noise sequence embedded in the audio is also described.

    Abstract translation: 描述用于音频信号的扩频数据隐藏。 根据要嵌入的数据，将一组伪随机噪声序列添加到音频信号。 使用掩蔽曲线来调整添加的噪声。 可以使用瞬态检测步骤来控制是否添加成形噪声序列。 通过首先执行白化步骤然后对相同的伪随机噪声序列组执行仅相位相关性来检测嵌入信息。 还描述了基于多路复用噪声序列与嵌入在音频中的噪声序列的相关性的检测方法。

    AUDIO DATA HIDING BASED ON PERCEPTUAL MASKING AND DETECTION BASED ON CODE MULTIPLEXING
    7.
    发明申请
    AUDIO DATA HIDING BASED ON PERCEPTUAL MASKING AND DETECTION BASED ON CODE MULTIPLEXING 有权
    基于代码多路复用的视觉显示和检测的音频数据隐藏

    公开(公告)号：US20160111102A1

    公开(公告)日：2016-04-21

    申请号：US14985047

    申请日：2015-12-30

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Regunathan Radhakrishnan ,  Michael Smithers ,  David S. McGrath

    IPC: G10L19/018

    CPC classification number: G10L19/018

    Abstract: A spread spectrum data hiding for audio signals is described. A set of pseudo-random noise sequences is added to an audio signal according to a data to be embedded. A masking curve is used to shape the added noise. A transient detection step can be used to control whether a shaped noise sequence is to be added or not. Embedded information is detected by first performing a whitening step and then performing a phase-only correlation with a same set of pseudo-random noise sequences. A detection method that is based on correlation of multiplexed noise sequences with a noise sequence embedded in the audio is also described.

    Abstract translation: 描述用于音频信号的扩频数据隐藏。 根据要嵌入的数据，将一组伪随机噪声序列添加到音频信号。 使用掩蔽曲线来调整添加的噪声。 可以使用瞬态检测步骤来控制是否添加成形噪声序列。 通过首先执行白化步骤然后对相同的伪随机噪声序列组执行仅相位相关性来检测嵌入信息。 还描述了基于多路复用噪声序列与嵌入在音频中的噪声序列的相关性的检测方法。

    EMBEDDING DATA IN STEREO AUDIO USING SATURATION PARAMETER MODULATION
    8.
    发明申请
    EMBEDDING DATA IN STEREO AUDIO USING SATURATION PARAMETER MODULATION 有权
    使用饱和度参数调制在立体声音频中嵌入数据

    公开(公告)号：US20150163614A1

    公开(公告)日：2015-06-11

    申请号：US14412882

    申请日：2013-07-03

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Regunathan Radhakrishnan ,  Mark F. Davis

    IPC: H04S7/00 ,  H04S1/00

    CPC classification number: H04S7/30 ,  G10L19/018 ,  H04S1/00 ,  H04S2420/03

    Abstract: In some embodiments, a method for embedding data (e.g., metadata for use during post-processing) in a stereo audio signal comprising frames. Each of the frames has a saturation value, and data are embedded in the stereo audio signal by modifying the signal to generate a modulated stereo audio signal comprising a sequence of modulated frames having modulated saturation values indicative of the embedded data. Typically, one data bit is embedded in each frame of an input stereo audio signal by modifying the frame to produce a modulated frame whose modulated saturation value matches a target value indicative of the data bit. In other embodiments, a method for extracting data from a stereo audio signal in which the data have been embedded in accordance with an embodiment of the inventive embedding method. Other aspects are systems (e.g., programmed processors) configured to perform any embodiment of the inventive method.

    Abstract translation: 在一些实施例中，一种用于将数据（例如，后处理期间使用的元数据）嵌入到包括帧的立体声音频信号中的方法。 每个帧具有饱和值，并且通过修改信号来将数据嵌入在立体声音频信号中，以产生包含调制的帧序列的调制立体声音频信号，调制后的帧具有指示嵌入数据的调制饱和度值。 通常，通过修改帧来产生调制的帧，其调制饱和值与指示数据位的目标值相匹配，一个数据位嵌入在输入立体声音频信号的每个帧中。 在其他实施例中，根据本发明的嵌入方法的实施例，从立体声音频信号中提取数据的方法，其中已经嵌入了数据。 其他方面是被配置为执行本发明方法的任何实施例的系统（例如，编程处理器）。

    Audio data hiding based on perceptual masking and detection based on code multiplexing
    9.
    发明授权
    Audio data hiding based on perceptual masking and detection based on code multiplexing 有权
    基于代码复用的感知掩蔽和检测的音频数据隐藏

    公开(公告)号：US09269363B2

    公开(公告)日：2016-02-23

    申请号：US14066366

    申请日：2013-10-29

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Regunathan Radhakrishnan ,  Michael Smithers ,  David S. McGrath

    IPC: G06F17/00 ,  G10L19/018

    CPC classification number: G10L19/018

    Abstract: A spread spectrum data hiding for audio signals is described. A set of pseudo-random noise sequences is added to an audio signal according to a data to be embedded. A masking curve is used to shape the added noise. A transient detection step can be used to control whether a shaped noise sequence is to be added or not. Embedded information is detected by first performing a whitening step and then performing a phase-only correlation with a same set of pseudo-random noise sequences. A detection method that is based on correlation of multiplexed noise sequences with a noise sequence embedded in the audio is also described.

    Abstract translation: 描述用于音频信号的扩频数据隐藏。 根据要嵌入的数据，将一组伪随机噪声序列添加到音频信号。 使用掩蔽曲线来调整添加的噪声。 可以使用瞬态检测步骤来控制是否添加成形噪声序列。 通过首先执行白化步骤然后对相同的伪随机噪声序列组执行仅相位相关性来检测嵌入信息。 还描述了基于多路复用噪声序列与嵌入在音频中的噪声序列的相关性的检测方法。

    Multi-Channel Audio Content Analysis Based Upmix Detection
    10.
    发明申请
    Multi-Channel Audio Content Analysis Based Upmix Detection 审中-公开
    基于多声道音频内容分析的上混检测

    公开(公告)号：US20150243289A1

    公开(公告)日：2015-08-27

    申请号：US14427879

    申请日：2013-09-13

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Regunathan Radhakrishnan ,  Mark F. Davis

    IPC: G10L19/008

    CPC classification number: G10L19/008

    Abstract: Forensic audio upmixer detection is described. Feature sets are extracted from an audio signal that has two or more individual channels. Based on the extracted feature sets, it is determined whether the audio signal was upmixed from audio content that has fewer channels.

    Abstract translation: 进行法医音频上混检测。 从具有两个或多个单独信道的音频信号中提取特征集。 基于所提取的特征集，确定音频信号是否从具有较少信道的音频内容中混​​合起来。

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