To eliminate the interference of 50 Hz alternating current, a digital high - pass filter is designed.

设计了用于抗50Hz工频干扰的数字 高通滤波器 .

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However high - pass filter may filter out low velocity blood flow components while eliminating the wall clutter.

但是,高通滤波器在滤除管壁信号的同时也滤除了频带与之重合的低频血流成分.

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The cut - off frequencies of the high - pass filter are set to the synchronous frequency of induction motor.

高通滤波器 的截止频率等于电机的同步角频率.

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