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    Adaptive Audio Filtering
    41.
    发明申请
    Adaptive Audio Filtering 审中-公开

    公开(公告)号：US20180075862A1

    公开(公告)日：2018-03-15

    申请号：US15558181

    申请日：2016-03-21

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Dong SHI ,  Glenn N. DICKINS ,  David GUNAWAN ,  Xuejing SUN

    IPC: G10L21/0232 ,  G10L21/028 ,  G10L25/21

    CPC classification number: G10L21/0232 ,  G10L21/0208 ,  G10L21/028 ,  G10L25/21 ,  G10L2021/02082 ,  H04M9/082

    Abstract: In an audio processing system (300), a filtering section (350, 400): receives subband signals (410, 420, 430) corresponding to audio content of a reference signal (301) in respective frequency subbands; receives subband signals (411, 421, 431) corresponding to audio content of a response signal (304) in the respective subbands; and forms filtered inband references (412, 422, 432) by applying respective filters (413, 423, 433) to the subband signals of the reference signal. For a frequency subband: filtered crossband references (424, 425) are formed by multiplying, by scalar factors (426, 427), filtered inband references of other subbands; a composite filtered reference (428) is formed by summing the filtered inband reference of the subband (422) and the filtered crossband references; a residual signal (429) is computed as a difference between the composite filtered reference and the subband signal of the response signal corresponding to the subband; and the scalar factors and the filter applied to the subband signal of the reference signal corresponding to the subband are adjusted based on the residual signal.

    HANDLING NUISANCE IN TELECONFERENCE SYSTEM
    42.
    发明申请
    HANDLING NUISANCE IN TELECONFERENCE SYSTEM 审中-公开

    公开(公告)号：US20170353696A1

    公开(公告)日：2017-12-07

    申请号：US15544114

    申请日：2016-02-16

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Taoran LU ,  Hariharan GANAPATHY-KATHIRVELU ,  Peng YIN ,  Glenn N. DICKINS ,  Xuejing SUN

    IPC: H04N7/15 ,  H04L29/06 ,  H04M3/56 ,  H04N7/14

    CPC classification number: H04N7/152 ,  H04L65/403 ,  H04L65/80 ,  H04M3/2227 ,  H04M3/56 ,  H04M2203/5036 ,  H04N7/147 ,  H04N7/15

    Abstract: The disclosure relates to handling nuisance in teleconference system. An endpoint device (400) for use in a teleconference includes an acquiring unit (401), a judging unit (402), a controller (403) and a processing unit (404). The acquiring unit acquires a media stream for presentation in the teleconference, and receives information from another device. The information includes a first estimation on whether the media stream is a nuisance to the teleconference. As the nuisance to a teleconference, audio or video signals are perceived by users as actually not relevant to the conference session or causing unpleasant feeling or confusion. The judging unit decides whether the media stream is the nuisance at least based on the information. The controller controls the processing of the media stream to degrade or suppress the presentation of the media stream in case that the media stream is decided as the nuisance. The processing unit processes the media stream under the control of the controller.

    AUDIO SPATIAL RENDERING APPARATUS AND METHOD
    45.
    发明申请
    AUDIO SPATIAL RENDERING APPARATUS AND METHOD 有权
    音频空间渲染设备和方法

    公开(公告)号：US20150382127A1

    公开(公告)日：2015-12-31

    申请号：US14768676

    申请日：2014-01-30

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Xuejing SUN ,  Gary SPITTLE

    IPC: H04S7/00

    CPC classification number: H04S7/30 ,  H04S2400/11 ,  H04S2420/01

    Abstract: An audio spatial rendering apparatus and method are disclosed. In one embodiment, The audio spatial rendering apparatus includes a rendering unit for spatially rendering an audio stream so that the reproduced far-end sound is perceived by a listener as originating from at least one virtual spatial position, a real position obtaining unit for obtaining a real spatial position of a real sound source, a comparator for comparing the real spatial position with the at least one virtual spatial position; and an adjusting unit for, where the real spatial position is within a predetermined range around at least one virtual spatial position, or vice versa, adjusting the parameters of the rendering unit so that the at least one virtual spatial position is changed.

    Abstract translation: 公开了一种音频空间渲染装置和方法。 在一个实施例中，音频空间渲染装置包括用于空间渲染音频流的渲染单元，使得再现的远端声音被听者感知为源于至少一个虚拟空间位置，实际位置获取单元用于获得 实际声源的实际空间位置，用于将真实空间位置与至少一个虚拟空间位置进行比较的比较器; 以及调整单元，其中实际空间位置在围绕至少一个虚拟空间位置的预定范围内，反之亦然，调整渲染单元的参数使得至少一个虚拟空间位置改变。

    ECHO CONTROL THROUGH HIDDEN AUDIO SIGNALS
    46.
    发明申请
    ECHO CONTROL THROUGH HIDDEN AUDIO SIGNALS 有权
    ECHO通过隐藏音频信号进行控制

    公开(公告)号：US20150371654A1

    公开(公告)日：2015-12-24

    申请号：US14409948

    申请日：2013-06-27

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Craig JOHNSTON ,  Dong SHI ,  Xuejing SUN ,  Glenn N. DICKINS

    IPC: G10L21/0208 ,  G10L21/0232

    CPC classification number: G10L21/0208 ,  G10L21/0232 ,  G10L2021/02082 ,  H04M9/082

    Abstract: A method (800) for determining an estimate (215, 261) of an echo path property of an electronic device (200, 250, 300, 600). The electronic device is configured to render a total audio signal using a loudspeaker (102), and the electronic device is configured to record an echo of the rendered audio signal using a microphone (103), thereby yielding a recorded audio signal (112). The method comprises inserting (801), in an inaudible manner, an auxiliary audio signal (212) into the total audio signal to be rendered; wherein the auxiliary audio signal (212) comprises a tonal audio signal at a first frequency; isolating (803) the echo of the auxiliary audio signal (212) from the recorded audio signal (112); and determining (804) the estimate (215, 261) of the echo path property based on the inserted auxiliary audio signal (212) and based on the isolated echo of the auxiliary audio signal (212).

    Abstract translation: 一种用于确定电子设备（200,250,300,600）的回波路径属性的估计（215,261）的方法（800）。 电子设备被配置为使用扬声器（102）呈现总音频信号，并且电子设备被配置为使用麦克风（103）记录所呈现的音频信号的回声，从而产生记录的音频信号（112）。 该方法包括以无法听见的方式将辅助音频信号（212）插入（801）到要渲染的总音频信号中; 其中所述辅助音频信号（212）包括第一频率的音调音频信号; 从所记录的音频信号（112）隔离（803）辅助音频信号（212）的回波; 以及基于所插入的辅助音频信号（212）并且基于所述辅助音频信号（212）的隔离回波来确定（804）所述回波路径属性的估计（215,261）。

    Method for Controlling Acoustic Echo Cancellation and Audio Processing Apparatus
    47.
    发明申请
    Method for Controlling Acoustic Echo Cancellation and Audio Processing Apparatus 有权
    控制声学回声消除和音频处理装置的方法

    公开(公告)号：US20150332704A1

    公开(公告)日：2015-11-19

    申请号：US14651564

    申请日：2013-11-25

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Xuejing SUN ,  Dong SHI ,  Kai LI

    IPC: G10L21/0208 ,  G10L21/0264

    CPC classification number: G10L21/0208 ,  G10L21/0264 ,  G10L2021/02082 ,  H04B3/23 ,  H04L49/90 ,  H04M9/082

    Abstract: A method for controlling acoustic echo cancellation and an audio processing apparatus are described. In one embodiment, the audio processing apparatus includes an acoustic echo canceller for suppressing acoustic echo in a microphone signal, a jitter buffer for reducing delay jitter of a received signal, and a joint controller for controlling the acoustic echo canceller by referring to at least one future frame in the jitter buffer.

    Abstract translation: 描述了一种用于控制声学回波消除的方法和一种音频处理装置。 在一个实施例中，音频处理装置包括用于抑制麦克风信号中的声学回声的声学回声消除器，用于减少接收信号的延迟抖动的抖动缓冲器以及用于通过参考至少一个 抖动缓冲区中的未来帧。

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