EntityQ2878· pop 29· linked from 266 articlesdiscrete Fourier transformSign in to savetechnique used in advanced mathematicsConnectionseigenvectors and eigenvaluesEntityroot of unityEntityreal numberEntityFourier transformEntityKronecker deltaEntitysamplingEntitydigital image processingEntitycross-correlationEntitydiscrete-time Fourier transformEntitydiscrete Fourier transformEntitySpectral density estimationEntitymathematicsEntitycomputerEntityCarl Friedrich GaussEntityradioEntitysoundEntitytemperatureEntityInternational Standard Book NumberEntitycomplex numberEntityintegerEntityCategoriesDigital signal processingDiscrete transformsFourier analysisNumerical analysisUnitary operators