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Runs convergence in the smallest square even adaptation filter echo canceler the manner
Runs convergence in the smallest square even adaptation filter echo canceler the manner
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机译:在最小平方均匀自适应滤波器回波消除器中进行收敛
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摘要
PURPOSE: To effectively perform echo canceling by finding primary echo, based on plural correlation tap values, predicting an error while narrowing a filter vector, and generating a filter vector updated, based on this predictive error. ;CONSTITUTION: In the convergence of echo canceling in a digital system, the primary echo in the filter vector is found based on the plural correlation tap values and this primary vector processing area is narrowed to the tap near the primary echo so that the convergence can be increased. Then, a signal vector X(n) 31 is multiplied with vectors 24 and 29 by a filter vector f(n) 32, its scalar product y(n) is subtracted 28 and 29 from a reflected signal s(n) including the echo, and this difference e(n) applies filter error prediction. This predictive e(n) is multiplied 22 and 23 by a basic adaptive rate [α/γx (o) max] and a signal vector x(n) 31, vectors are added 26 and 27 to a vector fn, and an updated filter vector fn+1 is provided.;COPYRIGHT: (C)1994,JPO
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机译:用途:为了有效地执行回声消除,方法是基于多个相关抽头值查找主回波,在缩小滤波器矢量的同时预测误差,并基于此预测误差生成更新的滤波器矢量。 ;组成:在数字系统中回波消除的收敛中,基于多个相关抽头值在滤波器矢量中找到主回波,并且将该主矢量处理区域缩小到靠近主回波的抽头,以便收敛增加。然后,将信号矢量X(n)31与矢量24和29乘以滤波器矢量f(n)32,从包括回波的反射信号s(n)中减去其标量积y(n)28和29。 ,此差异e(n)会应用滤波器误差预测。将该预测e(n)与22和23乘以基本自适应率[α/γ x Sub>(o)max]和信号向量x(n)31,将向量26和27相加向量f n Sub>,并提供了更新的过滤向量f n + 1 Sub> 。;版权:(C)1994,JPO
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