“滤波器”的英语是 filter,在电子工程、信号处理等领域中,该词常用来指代能够去除信号中不需要成分或分离特定频率成分的设备或算法。例如:
A low-pass filter(低通滤波器) allows low-frequency signals to pass while attenuating higher frequencies.
The audio filter helps remove unwanted noise from the recording.(该音频滤波器有助于去除录音中的杂音。)