翻訳と辞書 Words near each other ・ Binary erasure channel ・ Binary ethylenimine ・ Binary explosive ・ Binary expression tree ・ Binary file ・ Binary File Descriptor library ・ Binary Finary ・ Binary form ・ Bin Uehara ・ Bin Weevils ・ Bin Xie ・ Bin Yaroof ・ Bin Yauri ・ Bin Yu ・ Bin, Iran ・ Bin-centres ・ Bin-fed batching plant ・ Bin-Houyé ・ Bin-Jip (band) ・ BIN1 ・ Bina ・ Bina (missile) ・ Bina (river) ・ Bina (Vidhan Sabha constituency) ・ Bina Agarwal ・ Bina Avrile ・ Bina Bangsa School ・ BINA Center for Jewish Identity and Hebrew Culture ・ Bina Das ・ Bina Deneen 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 Bin-centres ： ウィキペディア英語版 Bin-centres A bin-centres test signal is one which has been constructed such that it has frequency components at FFT bin-centre frequencies. This allows analysis without an FFT window function on a synchronous measurement system. ==Background== When performing FFT-based spectral measurements, traditionally a window function has been used to reduce the effects of discontinuities at the ends of the FFT buffer, but these result in spectral leakage. When generating a single frequency test signal for FFT analysis, it is possible to create the frequency such that it aligns perfectly within an FFT bin-centre frequency. These frequencies are multiples of the frequency resolution of the FFT, given by the sample rate divided by the number of sample points. This results in no spectral leakage and all the power from the signal is present in only one FFT bin. Viewed in the time domain, a sine wave will fit in the centre of an FFT bin if it has a complete number of cycles within the length of the sample buffer. Such signals can be analysed without an FFT window function provided the system is synchronous (i.e., the signal generation and analysis are using the same clock source.) It follows that a stimulus can be constructed of many sine waves (as many as there are FFT bins) and the signal can still be analysed without an FFT window function. This is called multitone analysis. The amplitude and phase of these sine components can be freely adjusted in order to construct a signal with a particular frequency response characteristic. 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「Bin-centres」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.