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    • 54. 发明授权
    • Method and apparatus for processing a switched audio signal from a crosspoint router
    • 用于处理来自交叉点路由器的切换音频信号的方法和装置
    • US09510092B2
    • 2016-11-29
    • US14539840
    • 2014-11-12
    • Snell Limited
    • Jeff Butters
    • H04R3/00H03G3/34G11B27/028H04H60/04
    • H04R3/00H03G3/34H03G3/348H04H60/04H04R2420/01
    • Apparatus is provided for processing a switched audio signal output received from a crosspoint router having a plurality of inputs and a plurality of outputs, there being a control signal that defines which of the plurality of inputs is to be routed by the crosspoint router to which of the plurality of outputs. A control unit receives the control signal and serves to identify a route change in the control signal. An instantaneous value of the switched audio signal prior to the route change is stored. A signal processing unit then combines the stored value with values of the switched audio signal after the route change to form a processed audio signal that changes smoothly.
    • 提供了用于处理从具有多个输入和多个输出的交叉点路由器接收的切换音频信号输出的设备,存在控制信号,该控制信号定义多个输入中的哪一个将被交叉点路由器路由到哪个 多个输出。 控制单元接收控制信号并用于识别控制信号中的路线变化。 存储在路由改变之前的切换音频信号的瞬时值。 然后,信号处理单元将存储的值与路由改变后的切换音频信号的值进行组合,以形成平滑变化的经处理的音频信号。
    • 55. 发明授权
    • Management of broadcast audio loudness
    • 管理广播音响响度
    • US09344052B2
    • 2016-05-17
    • US14078640
    • 2013-11-13
    • Snell Limited
    • Maurice SnellDaniel Colgan
    • H03G3/00H03G9/00H03G9/02
    • H03G3/32H03G9/005H03G9/025
    • To control loudness during a junction between different types of broadcast content, such as a junction between programme and commercial or promotional content, representative loudness values for content respectively before (P) and after (C) the junction are received from a playout automation system. A time-varying gain control is applied before and after the junction in order to smooth loudness around the junction. The audio gain is smoothly increased prior to the junction to a gain (P+C)/2P times higher than the original gain value. Then, the gain is reduced shortly before the junction to a value (P+C)/2C times lower than the original gain value. After the junction, the gain is returned smoothly to the original value.
    • 为了控制在不同类型的广播内容之间的连接处的响度,例如程序和商业或促销内容之间的连接,分别从播放自动化系统接收在(P)之前和之后(C)之后的内容的代表响度值。 在连接处之前和之后施加时变增益控制,以便平滑连接处的响度。 在结点之前,音频增益平滑地增加到比原始增益值高的增益(P + C)/ 2P倍。 然后,在结点之前不久的增益减小到比原始增益值低的值(P + C)/ 2C倍。 结后,增益平稳恢复到原始值。