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1. 发明授权

US4771396A Digital filters 失效
标题翻译：数字滤波器
公开(公告)号：US4771396A
公开(公告)日：1988-09-13
申请号：US711686
申请日：1985-03-14
申请人： Colin R. South , Alwyn V. Lewis
发明人： Colin R. South , Alwyn V. Lewis
IPC分类号： H03H17/00 , H03H21/00 , H04B3/04 , H04B3/23 , G06F7/38
CPC分类号： H03H21/0012 , H04B3/23 , H03H2021/0089 , H04B3/238
摘要： A transversal finite impulse response, adaptive digital filter comprises three stages (10, 11, 12). The stage (10) is a memory stage which stores input samples x and coefficients. The second stage (11) is an arithmetic stage which forms convolution products and accumulates the product to provide an output. The third stage (12) forms update values for updating the coefficients according to a predetermined algorithm. The stages are coupled by buses (14, 15) and data transfer between the stages via the buses is controlled by a control unit (18). The filter operates so that convolution products are formed during a first part of each sample period and update values are formed during a second part of each sample period for use in the subsequent sample period.
摘要翻译：横向有限脉冲响应，自适应数字滤波器包括三个阶段（10,11,12）。阶段（10）是存储输入样本x和系数的存储器级。第二阶段（11）是一个运算阶段，它形成卷积产品并积累产品以提供产出。第三级（12）形成根据预定算法更新系数的更新值。这些级由总线（14,15）耦合，并且经由总线的级之间的数据传输由控制单元（18）控制。滤波器操作使得在每个采样周期的第一部分期间形成卷积积，并且在每个采样周期的第二部分期间形成更新值以用于随后的采样周期。

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