翻訳と辞書 Words near each other ・ Non-Summit ・ Non-surgical liposuction ・ Non-surgical rhinoplasty ・ Non-synchronous transmission ・ Non-system opposition ・ Non-tariff barriers to trade ・ Non-tax revenue ・ Non-thermal microwave effect ・ Non-timber forest product ・ Non-topological soliton ・ Non-towered airport ・ Non-traditional student ・ Non-trophic networks ・ Non-tropic hormone ・ Non-U.S. recipients of U.S. gallantry awards ・ Non-uniform discrete Fourier transform ・ Non-uniform memory access ・ Non-uniform rational B-spline ・ Non-use value ・ Non-vascular plant ・ Non-vegetarian ・ Non-verbal leakage ・ Non-Verbal Reasoning ・ Non-violation nullification of benefits ・ Non-Violence (sculpture) ・ Non-violent abortion protests ・ Non-virtual interface pattern ・ Non-Volatile File System ・ Non-volatile memory ・ Non-volatile random-access memory Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Non-uniform discrete Fourier transform ： ウィキペディア英語版 Non-uniform discrete Fourier transform In applied mathematics, the non-uniform discrete Fourier transform (NDFT) of a signal is a type of Fourier transform, related to a discrete Fourier transform or discrete-time Fourier transform, but in which the input signal is not sampled at equally spaced intervals. As a result of this, the computed Discrete Fourier Transform can also consist of unevenly sampled frequency values. It is however also possible to compute uniformly sampled frequency values from an unevenly sampled input signal. As a generalized approach for nonuniform sampling, NDFT can help us to get the information of a finite length signal in frequency domain at any frequency. It can also be used to design the FIR filters as the role of DFT, no matter if it's 1-D or 2-D. One of the reasons to adopt NDFT is that most signals have their energy distributed nonuniformly in the frequency domain. Therefore, a nonuniform sampling scheme could be more convenient and useful in lots of applications of Digital Signal Processing (DSP). For example, NDFT provides a variable spectral resolution controlled by the users. Note that NDFT reduces to DFT when the sampling points are located on the unit circle at equally spaced angles. ==1-D NDFT== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Non-uniform discrete Fourier transform」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.