A Study of FIR Low-Pass Filtering with Preserving Discontinuity of Step Signal
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- Takashi Yoshida
- Tokyo Metropolitan College of Industrial Technology
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- Ryuto Kubo
- Tokyo University of Agriculture and Technology
説明
Digital filters are one of the most widely used signal processing tool. Their advantages are simplicity and processing speed. Especially, they are suitable to extract or to suppress periodic component in input signals. However, when input signals include step signals, filters cause overshoot and ringing around time / space discontinuous samples. To solve this problem, this paper proposes a novel low-pass filtering method for discontinuous signal without overshoots and ringing. The proposed filter consists of a differentiator and a low-pass filter. The differentiator detects discontinuous samples. According to the output of the differentiator, a part of the input signal are replaced to have continuity. Then, replaced signals are denoised by a low-pass filter. Through some examples, the effectiveness of the proposed method is discussed.
収録刊行物
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- IEICE Proceeding Series
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IEICE Proceeding Series 66 116-121, 2021-09-20
The Institute of Electronics, Information and Communication Engineers
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詳細情報 詳細情報について
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- CRID
- 1390571271550885376
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- NII論文ID
- 230000012784
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- ISSN
- 21885079
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
