Band-limited function

{
  "id": "MLC-T-OAG-000270",
  "term": "Band-limited function",
  "field": "Oil and gas",
  "definition": "A mathematical function whose Fourier transform is zero outside of a finite frequency interval or band. Seismic signals are treated as band-limited because both the source wavelet and the Earth's filtering effects restrict the energy to a specific range of frequencies. This property is a foundational concept in digital signal processing for seismic data, dictating sampling requirements according to the Nyquist theorem.",
  "subject": "Geophysics",
  "url": "https://mlchart.com/terminology/oil-and-gas/band-limited-function/"
}