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Instant speaker algorithm for digital conference bridge
Instant speaker algorithm for digital conference bridge
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机译：数字会议桥的即时发言人算法
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摘要
Digital conference bridge for use with a plurality of telephones (#1 ...#0) and arranged whereby in accordance with predetermined output conditions from the telephones, as existing from time to time during use of the telephones for communication therebetween, the output signal from one telephone is directed to the remainder of the telephones and the output signals of the remainder are suppressed. The bridge generates products xn.gn and xi-gi where xn and xi are instantaneous magnitudes of samples of all of the signals and of the selected signal respectively, and gnand gi are predetermined gain factors for all of the signals and for the selected signal respectively. A register (60) storing the value of "i", designating the presently selected telephone, is updated by a circuit including comparators (42, 52) connected to a gate (44) whereby to surplant a selection of an existing value of "i" by a new value under the following conditions:and;One of the comparators (42) is arranged to compare the last held values xi-gi as stored in a register (40) with the incoming products x n-gn, to determine whether the first of these conditions prevails and the second comparator (52) is arranged to compare the incoming product xn-gn with the product T.gn to determine whether the second of these conditions prevails. The value "T" represents a threshold value stored in the threshold register (48). The bridge is arranged to replace a threshold "T" as stored in the threshold register (48) by a new value equal to xi.gi in the event that a product xi-gi should exceed the existing value of "T". The bridge is also arranged to decrement the threshold value "T" by a predetermined amount in the event that the threshold value "T" should exceed one or a plurality of successive products xi-gi.
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机译：数字会议桥，用于与多个电话（＃1 ...＃0）配合使用，并根据电话的预定输出条件（如在使用电话之间进行通信期间时不时存在的输出信号）进行配置来自一部电话的语音信号被引向其余的电话，其余的输出信号被抑制。桥生成乘积x n .g n 和x i -g i ，其中x n < / Sub>和x i 分别是所有信号和所选信号以及g n 和g i 的瞬时样本量分别是所有信号和所选信号的预定增益因子。由包括连接到门（44）的比较器（42、52）的电路更新存储指定当前选择的电话的值“ i”的寄存器（60），从而取代对“ i”的现有值的选择。在以下条件下以新值添加：“ <数学ID =” matha01“> <图像文件=” IMGA0001.GIF“ he =” 5“ id =” ia01“ imgContent =” math“ imgFormat =” GIF“ inline =” no“ wi =” 19“ /> 和展开▼
