Last Updated：2025/11/23
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When processing seismic data, the engineer applied an Ormsby filter to isolate the desired frequency band between f2 and f3 while attenuating noise below f1 and above f4.
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When processing seismic data, the engineer applied an Ormsby filter to isolate the desired frequency band between f2 and f3 while attenuating noise below f1 and above f4.
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Ormsby filter
Noun
Japanese Meaning
Ormsbyフィルタ：台形形状を持つフィルタで、4つの境界周波数（f1、f2、f3、f4）によって特性が決定される。具体的には、f1未満およびf4超の周波数成分を除去し、f1からf2およびf3からf4の間では振幅が線形に変化、f2からf3の間では平坦な応答を示す。
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