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    IMPEDANCE MATCHING FILTERS AND EQUALIZATION FOR HEADPHONE SURROUND RENDERING
    5.
    发明申请
    IMPEDANCE MATCHING FILTERS AND EQUALIZATION FOR HEADPHONE SURROUND RENDERING 审中-公开

    公开(公告)号：US20170339504A1

    公开(公告)日：2017-11-23

    申请号：US15522699

    申请日：2015-10-28

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Sunil BHARITKAR ,  Louis D. FIELDER

    IPC: H04S3/00 ,  H04S7/00

    CPC classification number: H04S3/004 ,  H04S7/302 ,  H04S7/304 ,  H04S2400/01 ,  H04S2420/01

    Abstract: Embodiments are described for designing a filter in a magnitude domain performing an impedance filtering function over a frequency domain to compensate for directional cues for the left and right ears of the listener as a function of virtual source angles during headphone virtual sound reproduction. The filter is derived by obtaining blocked ear canal and open ear canal transfer functions for loudspeakers placed in a room, obtaining an open ear canal transfer function for a headphone placed on a listening subject, and dividing the loudspeaker transfer functions by the headphone transfer function to invert a headphone response at the entrance of the ear canal and map the ear canal function from the headphone to free field.

    Audio Playback System Monitoring
    6.
    发明申请
    Audio Playback System Monitoring 有权
    音频播放系统监控

    公开(公告)号：US20170026766A1

    公开(公告)日：2017-01-26

    申请号：US15282631

    申请日：2016-09-30

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Sunil BHARITKAR ,  Brett CROCKETT ,  Louis FIELDER ,  Michael ROCKWELL

    IPC: H04R29/00 ,  H04R3/12

    CPC classification number: H04R29/002 ,  H04H60/04 ,  H04H60/33 ,  H04R3/12 ,  H04R29/001 ,  H04R2430/03

    Abstract: In some embodiments, a method for monitoring speakers within an audio playback system (e.g., movie theater) environment. In typical embodiments, the monitoring method assumes that initial characteristics of the speakers (e.g., a room response for each of the speakers) have been determined at an initial time, and relies on one or more microphones positioned in the environment to perform a status check on each of the speakers to identify whether a change to at least one characteristic of any of the speakers has occurred since the initial time. In other embodiments, the method processes data indicative of output of a microphone to monitor audience reaction to an audiovisual program. Other aspects include a system configured (e.g., programmed) to perform any embodiment of the inventive method, and a computer readable medium (e.g., a disc) which stores code for implementing any embodiment of the inventive method.

    Abstract translation: 在一些实施例中，一种用于监视音频播放系统（例如，电影院）环境中的扬声器的方法。 在典型的实施例中，监视方法假设扬声器的初始特性（例如，每个扬声器的房间响应）已经在初始时间被确定，并且依赖于位于环境中的一个或多个麦克风来执行状态检查 在每个扬声器上，以识别自从初始时间以来是否发生了任何扬声器的至少一个特征的改变。 在其他实施例中，该方法处理指示麦克风的输出的数据，以监视对视听程序的观众反应。 其他方面包括配置（例如，编程）以执行本发明方法的任何实施例的系统，以及存储用于实现本发明方法的任何实施例的代码的计算机可读介质（例如，盘）。

    AUTOMATIC LOUDSPEAKER POLARITY DETECTION
    7.
    发明申请
    AUTOMATIC LOUDSPEAKER POLARITY DETECTION 有权
    自动扬声器极性检测

    公开(公告)号：US20150365775A1

    公开(公告)日：2015-12-17

    申请号：US14761906

    申请日：2014-01-17

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

    Inventor： Mark F. DAVIS ,  Louis FIELDER ,  Antonio Mateos SOLE ,  Giulio CENGARLE ,  Sunil BHARITKAR

    IPC: H04R29/00

    CPC classification number: H04R29/001 ,  H04R29/002 ,  H04S3/00 ,  H04S7/00

    Abstract: In some embodiments, a method for automatic detection of polarity of speakers, e.g., speakers installed in cinema environments. In some embodiments, the method determines relative polarities of a set of speakers (e.g., loudspeakers and/or drivers of a multi-driver loudspeaker) using a set of microphones, including by measuring impulse responses, including an impulse response for each speaker-microphone pair; clustering the speakers into a set of groups, each group including at least two of the speakers which are similar to each other in at least one respect; and for each group, determining and analyzing cross-correlations of pairs of impulse responses (e.g., pairs of processed versions of impulse responses) of speakers in the group to determine relative polarities of the speakers. Other aspects include systems configured (e.g., programmed) to perform any embodiment of the inventive method, and computer readable media (e.g., discs) which store code for implementing any embodiment of the inventive method.

    Abstract translation: 在一些实施例中，用于自动检测扬声器（例如安装在电影环境中的扬声器）的极性的方法。 在一些实施例中，该方法使用一组麦克风来确定一组扬声器（例如，多驱动扬声器的扬声器和/或驱动器）的相对极性，包​​括通过测量脉冲响应，包括每个扬声器麦克风的脉冲响应 对; 将扬声器聚集成一组，每个组包括至少两个在至少一个方面彼此相似的扬声器; 并且对于每个组，确定和分析组中的扬声器的脉冲响应对（例如脉冲响应的处理版本对）的交叉相关性，以确定扬声器的相对极性。 其他方面包括配置（例如，编程）用于执行本发明方法的任何实施例的系统，以及存储用于实现本发明方法的任何实施例的代码的计算机可读介质（例如，盘）。

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