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    Method of rendering one or more captured audio soundfields to a listener
    31.
    发明授权
    Method of rendering one or more captured audio soundfields to a listener 有权

    公开(公告)号：US10694305B2

    公开(公告)日：2020-06-23

    申请号：US16518666

    申请日：2019-07-22

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Richard J. Cartwright ,  David S. McGrath ,  Glenn N. Dickins

    IPC: H04S1/00 ,  H04S7/00 ,  H04M3/56

    Abstract: A computer implemented system for rendering captured audio soundfields to a listener comprises apparatus to deliver the audio soundfields to the listener. The delivery apparatus delivers the audio soundfields to the listener with first and second audio elements perceived by the listener as emanating from first and second virtual source locations, respectively, and with the first audio element and/or the second audio element delivered to the listener from a third virtual source location. The first virtual source location and the second virtual source location are perceived by the listener as being located to the front of the listener, and the third virtual source location is located to the rear or the side of the listener.

    Post-teleconference playback using non-destructive audio transport
    32.
    发明授权
    Post-teleconference playback using non-destructive audio transport 有权

    公开(公告)号：US10511718B2

    公开(公告)日：2019-12-17

    申请号：US15578386

    申请日：2016-06-15

    Applicant: Dolby Laboratories Licensing Corporation

    Inventor： Glenn N. Dickins ,  Richard J. Cartwright

    IPC: H04M3/56 ,  H04M3/22 ,  H04M3/42 ,  G10L21/0232 ,  G10L21/0316 ,  G10L21/0208

    Abstract: Teleconference audio data including a plurality of individual uplink data packet streams, may be received during a teleconference. Each uplink data packet stream may corresponding to a telephone endpoint used by one or more teleconference participants. The teleconference audio data may be analyzed to determine a plurality of suppressive gain coefficients, which may be applied to first instances of the teleconference audio data during the teleconference, to produce first gain-suppressed audio data provided to the telephone endpoints during the teleconference. Second instances of the teleconference audio data, as well as gain coefficient data corresponding to the plurality of suppressive gain coefficients, may be sent to a memory system as individual uplink data packet streams. The second instances of the teleconference audio data may be less gain-suppressed than the first gain-suppressed audio data.

    Spatial Multiplexing in a Soundfield Teleconferencing System
    34.
    发明申请
    Spatial Multiplexing in a Soundfield Teleconferencing System 有权
    Soundfield电话会议系统中的空间复用

    公开(公告)号：US20150244869A1

    公开(公告)日：2015-08-27

    申请号：US14431247

    申请日：2013-09-25

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Richard J. Cartwright ,  David S. McGrath ,  Glenn N. Dickins

    IPC: H04M3/56 ,  H04S7/00 ,  H04R5/04

    CPC classification number: H04M3/561 ,  H04M3/568 ,  H04M2203/509 ,  H04R5/04 ,  H04S7/302

    Abstract: The present document relates to audio conference systems. In particular, the present document relates to the mapping of soundfields within an audio conference system. A conference multiplexer (110, 175, 210, 400) configured to place a first input soundfield signal (402) originating from a first soundfield endpoint (120, 170) within a 2D or 3D conference scene (300) to be rendered to a listener (301) is described. The first input soundfield signal (402) is indicative of a soundfield captured by the first soundfield endpoint (120, 170). The conference multiplexer (110, 175, 210, 400) is configured to set up the conference scene (300) comprising a plurality of talker locations (321, 322, 332, 331) at different angles (323, 333) with respect to the listener (301); provide a first sector (325); wherein the first sector (325) has a first angular width (324); wherein the first angular width (324) is greater than zero; and transform the first input soundfield signal (402) into a first output soundfield signal (403), such that for the listener (301) the first output soundfield signal (403) appears to be emanating from one or more virtual talker locations (321, 322) within the first sector (325).

    Abstract translation: 本文件涉及音频会议系统。 特别地，本文件涉及声音会议系统内的声场的映射。 会议多路复用器（110,175,210,400）被配置为将来自第一声场端点（120,170）的第一输入声场信号（402）放置在2D或3D会议场景（300）内以被呈现给听众 （301）。 第一输入声场信号（402）指示由第一声场端点（120,170）捕获的声场。 会议多路复用器（110,175,210,400）被配置为以相对于所述会议多路复用器（110,175,210,400）以不同的角度（323,333,331）来建立包括多个讲话者位置（321,322,332,331）的会议场景（300） 听众（301）; 提供第一部门（325）; 其中所述第一扇区（325）具有第一角宽度（324）; 其中所述第一角宽度（324）大于零; 并且将第一输入声场信号（402）变换为第一输出声场信号（403），使得对于收听者（301），第一输出声场信号（403）似乎是从一个或多个虚拟讲话者位置（321， 322）在第一扇区（325）内。

    Method for Improving Perceptual Continuity in a Spatial Teleconferencing System
    35.
    发明申请
    Method for Improving Perceptual Continuity in a Spatial Teleconferencing System 有权
    提高空间电话会议系统感知连续性的方法

    公开(公告)号：US20150244868A1

    公开(公告)日：2015-08-27

    申请号：US14430841

    申请日：2013-09-25

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： Richard J. Cartwright ,  Glenn N. Dickins

    IPC: H04M3/56

    CPC classification number: H04M3/561 ,  H04M3/569 ,  H04M2203/5072

    Abstract: The present document relates to audio conference systems. In particular, the present document relates to improving the perceptual continuity within an audio conference system. According to an aspect, a method for multiplexing first and second continuous input audio signals is described, to yield a multiplexed output audio signal which is to be rendered to a listener. The first and second input audio signals (123) are indicative of sounds captured by a first and a second endpoint (120, 170), respectively. The method comprises determining a talk activity (201, 202) in the first and second input audio signals (123), respectively; and determining the multiplexed output audio signal based on the first and/or second input audio signals (123) and subject to one or more multiplexing conditions. The one or more multiplexing conditions comprise: at a time instant, when there is talk activity (201) in the first input audio signal (123), determining the multiplexed output audio signal at least based on the first input audio signal (123); at a time instant, when there is talk activity (202) in the second input audio signal (123), determining the multiplexed output audio signal at least based on the second input audio signal (123); and at a silence time instant, when there is no talk activity (201, 202) in the first and in the second input audio signals (123), determining the multiplexed output audio signal based on only one of the first and second input audio signals (123).

    Abstract translation: 本文件涉及音频会议系统。 特别地，本文件涉及改善音频会议系统内的感知连续性。 根据一方面，描述了用于复用第一和第二连续输入音频信号的方法，以产生将被呈现给收听者的多路复用输出音频信号。 第一和第二输入音频信号（123）分别指示由第一和第二端点（120,170）捕获的声音。 该方法包括分别在第一和第二输入音频信号（123）中确定通话活动（201,202）; 以及基于所述第一和/或第二输入音频信号（123）并经受一个或多个复用条件来确定所述复用的输出音频信号。 所述一个或多个复用条件包括：在时刻，当所述第一输入音频信号（123）中存在通话活动（201）时，至少基于所述第一输入音频信号（123）确定所述多路复用的输出音频信号; 在第二输入音频信号（123）中存在通话活动（202）的情况下，至少基于第二输入音频信号（123）确定多路复用的输出音频信号; 并且在静音时刻，当在第一和第二输入音频信号（123）中没有通话活动（201,202）时，仅基于第一和第二输入音频信号中的一个确定多路复用的输出音频信号 （123）。

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