{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:47:33Z","timestamp":1760233653158,"version":"build-2065373602"},"reference-count":19,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2021,2,2]],"date-time":"2021-02-02T00:00:00Z","timestamp":1612224000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Ministry of Science and Technology, Taiwan, R.O.C.","award":["MOST108-2637-E-129-002"],"award-info":[{"award-number":["MOST108-2637-E-129-002"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In order to reduce Gaussian noise, this paper proposes a method via taking the average of the upper and lower envelopes generated by capturing the high and low peaks of the input signal. The designed fast response filter has no cut-off frequency, so the high order harmonics of the actual signal remain unchanged. Therefore, it can immediately respond to the changes of input signal and retain the integrity of the actual signal. In addition, it has only a small phase delay. The slew rate, phase delay and frequency response can be confirmed from the simulation results of Multisim 13.0. The filter outlined in this article can retain the high order harmonics of the original signal, achieving a slew rate of 6.34 V\/\u03bcs and an almost zero phase difference. When using our filter to physically test the input signal with a noise level of 3 Vp-p Gaussian noise, a reduced noise signal of 120 mVp-p is obtained. The noise can be suppressed by up to 4% of the raw signal.<\/jats:p>","DOI":"10.3390\/s21031008","type":"journal-article","created":{"date-parts":[[2021,2,2]],"date-time":"2021-02-02T13:01:12Z","timestamp":1612270872000},"page":"1008","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Low Distortion of Noise Filter Realization with 6.34 V\/\u03bcs Fast Slew Rate and 120 mVp-p Output Noise Signal"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6348-0019","authenticated-orcid":false,"given":"Fang-Ming","family":"Yu","sequence":"first","affiliation":[{"name":"Department of Electrical Engineering\/Information and Communication Engineering, St. John\u2019s University, New Taipei City 25135, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kun-Cheng","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Optics and Photonics, National Central University, Taoyuan City 32001, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ko-Wen","family":"Jwo","sequence":"additional","affiliation":[{"name":"Department of Optics and Photonics, National Central University, Taoyuan City 32001, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rong-Seng","family":"Chang","sequence":"additional","affiliation":[{"name":"Department of Optics and Photonics, National Central University, Taoyuan City 32001, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jun-Yi","family":"Lin","sequence":"additional","affiliation":[{"name":"Department of Optics and Photonics, National Central University, Taoyuan City 32001, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,2,2]]},"reference":[{"key":"ref_1","unstructured":"Chen, Y.T. 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