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1. 发明申请

US20080240220A1 DIGITAL FILTER AND METHOD FOR FILTERING 审中-公开
标题翻译：数字滤波器和滤波方法
公开(公告)号：US20080240220A1
公开(公告)日：2008-10-02
申请号：US12023377
申请日：2008-01-31
申请人： Bjoern ELLERMEYER
发明人： Bjoern ELLERMEYER
IPC分类号： H03D1/00 , H04L27/06
CPC分类号： H03H17/0292 , H03H17/0275 , H03H17/0621 , H03H17/0664 , H03H2218/085
摘要： Digital filter, comprising a multiplier configured to generate an intermediate signal, wherein said intermediate signal is generated by multiplying an input signal with a filter coefficient signal, wherein said multiplier is operated at a clock rate and said input signal has a sampling rate, wherein said clock rate is higher than said sampling rate; a first buffer configured to supply said filter coefficient signal to said multiplier at said clock rate, wherein said filter coefficient signal represents N filter coefficients in a periodic order, wherein N denotes the order of said digital filter; a second buffer configured to buffer N/2 samples of an intermediate output signal and to generate a respective time delayed intermediate output signal; and an adder configured to generate said intermediate output signal or an output signal of said digital filter based on an addition of said time delayed intermediate output signal and said intermediate signal.
摘要翻译：数字滤波器，包括被配置为产生中间信号的乘法器，其中所述中间信号通过将输入信号与滤波器系数信号相乘而产生，其中所述乘法器以时钟速率操作，并且所述输入信号具有采样率，其中所述时钟频率高于所述采样率; 第一缓冲器，被配置为以所述时钟速率将所述滤波器系数信号提供给所述乘法器，其中所述滤波器系数信号以周期顺序表示N个滤波器系数，其中N表示所述数字滤波器的阶数; 第二缓冲器，被配置为缓冲中间输出信号的N / 2采样并产生相应的时间延迟的中间输出信号; 以及加法器，被配置为基于所述延时中间输出信号和所述中间信号的相加来产生所述中间输出信号或所述数字滤波器的输出信号。

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