@prefix mdl: <http://data.loterre.fr/ark:/67375/MDL> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

mdl:-MS6NT86N-0
  skos:hiddenLabel "discrete Fourier transforms"@en, "Transformation Fourier discrètes"@fr, "Transformation Fourier discrète"@fr, "transformations de Fourier discrètes"@fr, "discrete Fourier transformations"@en, "Discrete Fourier transformation"@en ;
  a skos:Concept ;
  skos:exactMatch <https://en.wikipedia.org/wiki/Discrete_Fourier_transform>, <https://fr.wikipedia.org/wiki/Transformation_de_Fourier_discr%C3%A8te> ;
  skos:narrower mdl:-M0XS4HFG-2 ;
  skos:inScheme mdl: ;
  skos:prefLabel "transformation de Fourier discrète"@fr, "discrete Fourier transform"@en ;
  skos:altLabel "discrete Fourier transformation"@en ;
  skos:definition "In mathematics, the discrete Fourier transform (DFT) converts a finite sequence of equally-spaced samples of a function into a same-length sequence of equally-spaced samples of the discrete-time Fourier transform (DTFT), which is a complex-valued function of frequency. The interval at which the DTFT is sampled is the reciprocal of the duration of the input sequence. An inverse DFT is a Fourier series, using the DTFT samples as coefficients of complex sinusoids at the corresponding DTFT frequencies. It has the same sample-values as the original input sequence. The DFT is therefore said to be a frequency domain representation of the original input sequence. If the original sequence spans all the non-zero values of a function, its DTFT is continuous (and periodic), and the DFT provides discrete samples of one cycle. If the original sequence is one cycle of a periodic function, the DFT provides all the non-zero values of one DTFT cycle. (Wikipedia, The Free Encyclopedia, <a href=\"https://en.wikipedia.org/wiki/Discrete_Fourier_transform\" target=\"_blank\">https://en.wikipedia.org/wiki/Discrete_Fourier_transform</a>)"@en, "La transformation de Fourier discrète (TFD), outil mathématique, sert à traiter un signal numérique. Elle constitue un équivalent discret de la transformation de Fourier (continue) utilisée pour traiter un signal analogique. (Wikipedia, L'Encylopédie Libre, <a href=\"https://fr.wikipedia.org/wiki/Transformation_de_Fourier_discr%C3%A8te\" target=\"_blank\">https://fr.wikipedia.org/wiki/Transformation_de_Fourier_discr%C3%A8te</a>)"@fr ;
  skos:broader mdl:-CH4WKKM6-M .

mdl: a skos:ConceptScheme .
mdl:-M0XS4HFG-2
  skos:prefLabel "fast Fourier transform"@en, "transformation de Fourier rapide"@fr ;
  a skos:Concept ;
  skos:broader mdl:-MS6NT86N-0 .

mdl:-CH4WKKM6-M
  skos:prefLabel "traitement du signal"@fr, "signal processing"@en ;
  a skos:Concept ;
  skos:narrower mdl:-MS6NT86N-0 .