spectral approximation

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spectral approximation [‚spek·trəl ə‚prȧk·sə′mā·shən]

(mathematics)

A numerical approximation of a function of two or more variables that involves the expansion of the function into a generalized Fourier series, followed by computation of the Fourier coefficients.

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No references found			Swarztrauber, On the Spectral Approximation of Discrete Scalar and Vector Functions on a Sphere, Siam J. An automated method for recovering piecewise smooth functions on ... by Blakely, Chris; Gelb, Anne; Navarra, Antonio / Sampling Theory in Signal and Image Processing			SPECmark SPECmark89 SPECOL SPECrate_base_fp92 SPECrate_fp92 SPECrate_int92 specs SPECSystem SPECT spectacle spectacle bird spectacle frame spectacle stone Spectacled Bear spectacular Spectator spectator ion Spectator, The SPECTEXT Spector Spector, Phil Spectra 70 Spectra Pritchard photometer Spectral Analysis of Linear Operators Spectral Analysis of Speech Sounds spectral approximation Spectral Band Replication spectral bands spectral bandwidth spectral centroid spectral characteristic spectral class spectral classification Spectral Classification of Stars spectral color Spectral Concentration spectral density spectral dimension spectral directional reflectance factor spectral emissivity spectral energy distribution spectral extinction spectral factorization spectral function spectral hygrometer spectral irradiance Spectral Line Spectral Lines, Width of spectral locus spectral luminosity classification Spectral Luminous Efficacy			spectra spectra spectra Spectra 70 Spectra of Cosmic Ray Nuclei Spectra Pritchard photometer Spectra Technology Inc. Spectracef Spectracular Spectracular Spectracular spectral spectral spectral Spectral Absorption Coefficient Spectral Accelerate Algorithm Spectral Acceleration Spectral Acceleration Generalized Forward-Backward Method Spectral Airglow Temperature Imager Spectral Analysis and Recognition Computer Spectral Analysis Facility Spectral Analysis Laboratory Spectral Analysis of Heart Rate Variability Spectral Analysis of Linear Operators Spectral Analysis of Speech Sounds Spectral Analysis of Surface Waves Spectral Analysis of the Ultrasound Doppler's Signal Spectral and In-Band Radiometric Imaging of Targets and Scenes Spectral and Photometric Imaging Receiver Spectral Angle Mapper spectral approximation Spectral Autocorrelation Peak Valley Ratio Spectral band Spectral band emission Spectral band replication Spectral band replication Spectral bands Spectral bands spectral bandwidth Spectral Bat Spectral centroid Spectral Change Vector Analysis spectral characteristic Spectral class Spectral class Spectral classes Spectral classes Spectral classification Spectral Classification of Stars Spectral Classified Vector Quantization spectral color spectral color spectral colour spectral colour Spectral Comparator Facility Spectral Concentration Spectral Data Spectral Data Base System Spectral decomposition Spectral density spectral dimension

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