noun
bandpass filter
Technical term in electronics and signal processing; a filter that passes frequencies within a certain range and attenuates others.
この回路には帯域通過ろ波器が使われている。
A bandpass filter is used in this circuit.
Compound of 帯域 (frequency band), 通過 (passing through), and ろ波器 (filter). The ろ is a simplified kana replacement for the complex kanji 濾.