Low-pass filter

{
  "id": "MLC-T-CHM-006793",
  "term": "Low-pass filter",
  "field": "Chemistry",
  "definition": "An electronic or optical filter that allows signals with frequencies below a certain cutoff frequency to pass through, while attenuating signals with frequencies above it. In analytical instrumentation, this is used to remove high-frequency noise from a signal, improving the signal-to-noise ratio. For electromagnetic radiation, a low-pass filter transmits longer wavelengths and blocks shorter ones.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "high-pass filter",
    "electromagnetic radiation",
    "wavenumber in vacuum"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 666 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/low-pass-filter/"
}