翻訳と辞書 Words near each other ・ Impulse (software company) ・ Impulse (software) ・ Impulse (Steven Gould novel) ・ Impulse (Theaterfestival) ・ Impulse Airlines ・ Impulse C ・ Impulse control disorder ・ Impulse drive ・ Impulse Drum and Bugle Corps ・ Impulse economy ・ Impulse excitation technique ・ Impulse facility ・ Impulse FC ・ Impulse Fire Extinguishing System ・ Impulse generator ・ Impulse invariance ・ Impulse noise ・ Impulse noise (audio) ・ Impulse purchase ・ Impulse response ・ Impulse roller coaster ・ Impulse to Progress and Democracy ・ Impulse Tracker ・ Impulse! Records ・ Impulse! Records discography ・ Impulse-based turn system ・ Impulsion ・ Impulsive ・ Impulsive (song) ・ Impulsive! Revolutionary Jazz Reworked 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 Impulse invariance ： ウィキペディア英語版 Impulse invariance Impulse invariance is a technique for designing discrete-time infinite-impulse-response (IIR) filters from continuous-time filters in which the impulse response of the continuous-time system is sampled to produce the impulse response of the discrete-time system. The frequency response of the discrete-time system will be a sum of shifted copies of the frequency response of the continuous-time system; if the continuous-time system is approximately band-limited to a frequency less than the Nyquist frequency of the sampling, then the frequency response of the discrete-time system will be approximately equal to it for frequencies below the Nyquist frequency. ==Discussion== The continuous-time system's impulse response, $h\_c(t)$, is sampled with sampling period $T$ to produce the discrete-time system's impulse response, $h()$. :$h()=Th\_c(nT)\backslash ,$ Thus, the frequency responses of the two systems are related by :$H(e^)\; =\; \backslash sum\_^\backslash infty\; +\; j\backslash frack\backslash right)\}\backslash ,$ If the continuous time filter is approximately band-limited (i.e. when $|\backslash Omega|\; \backslash ge\; \backslash pi/T$), then the frequency response of the discrete-time system will be approximately the continuous-time system's frequency response for frequencies below π radians per sample (below the Nyquist frequency 1/(2''T'') Hz): :$H(e^)\; =\; H\_c(j\backslash omega/T)\backslash ,$ for $|\backslash omega|\; \backslash le\; \backslash pi\backslash ,$ 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「Impulse invariance」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.