Fourier Transform

GPTKB entity

Statements (53)
Predicate Object
gptkbp:instanceOf gptkb:transformation
gptkbp:application gptkb:quantum_physics
communications
image processing
audio signal analysis
gptkbp:basisFor complex exponentials
sine and cosine functions
gptkbp:category gptkb:integral
gptkbp:codomain frequency domain
gptkbp:continuousVersion gptkb:Continuous_Fourier_Transform
gptkbp:designer Inverse Fourier Transform
gptkbp:discreteVersion gptkb:Discrete_Fourier_Transform
gptkbp:domain time domain
gptkbp:extendsTo gptkb:Fractional_Fourier_Transform
gptkb:Short-Time_Fourier_Transform
gptkb:Windowed_Fourier_Transform
gptkbp:fastAlgorithm gptkb:Fast_Fourier_Transform
gptkbp:field gptkb:mathematics
gptkb:signal_processing
physics
gptkbp:firstPublished 1822
gptkbp:form linear
invertible
unitary (under certain conditions)
gptkbp:generalizes Fourier series
https://www.w3.org/2000/01/rdf-schema#label Fourier Transform
gptkbp:input gptkb:software
gptkbp:limitation not always defined for all functions
requires integrable functions
gptkbp:namedAfter gptkb:Joseph_Fourier
gptkbp:notation F(f)(ξ)
∫ f(t) e^{-i2πξt} dt
𝓕{f(t)}
gptkbp:output gptkb:software
gptkbp:purpose decompose functions into frequencies
gptkbp:recurrence non-periodic signals
gptkbp:relatedConcept gptkb:Laplace_Transform
gptkb:Z-transform
gptkb:Hilbert_Transform
gptkbp:supportsAlgorithm gptkb:FFT
gptkb:DFT
gptkbp:usedFor solving differential equations
filter design
spectral analysis
frequency analysis
gptkbp:usedIn seismology
speech recognition
MRI
radar signal analysis
gptkbp:bfsParent gptkb:Signal_Processing
gptkb:Digital_Filters
gptkb:spectrometer
gptkbp:bfsLayer 5