discrete Fourier transform

基本解釋

According to the characteristics of unbalance signal, the fast algorithm of discrete Fourier transform(DFT) is presented and accomplished by using microcomputer.
針對(duì)測(cè)試環(huán)境中不平衡量信號(hào)的特點(diǎn) ，提出了離散傅里葉變換快速算法，并在通用微機(jī)上實(shí)現(xiàn) 。
Digital phase-shift beamforming of narrow-band signals from uniform collinear hydrophone arrays may be accomplished by computationally efficient discrete Fourier transform(DFT) algorithms.
使用有效的離散傅立葉變換（DFT）波束形成算法，可以對(duì)均勻線列水聽器的窄帶信號(hào)實(shí)現(xiàn)數(shù)字相移波束形成。
According to the Discrete Fourier Transform, this paper proposes a method of harmonic detection by band filter based on DFT algorithm, which improves the dynamic performance of detection system.
根據(jù) 帶通濾波器的瞬時(shí)諧波檢測(cè)方法，離散傅里葉變換基本思想，提出了運(yùn)用基于DFT的濾波算法實(shí)現(xiàn) 帶通濾波。

Discrete Time Fourier Transform 離散時(shí)間傅里葉變換;離散時(shí)域傅立葉變換;葉變換;非周期性離散信號(hào)離散時(shí)域傅立葉變換
discrete fractional Fourier transform 離散分?jǐn)?shù)階傅里葉變換;離散分?jǐn)?shù)階fourier變換
discrete match Fourier transform 離散匹配傅里葉變換
discrete chirp fourier transform 離散chirp
discrete windowed fourier transform 離散窗口傅里葉變換

離散傅里葉變換
It is proposed that the function of the digital signal filtering separation be realized for the filterbank by a discrete Fourier transform (DFT).
提出了以離散傅里葉變換(DFT)實(shí)現(xiàn)濾波器組的數(shù)字信號(hào)濾波分離功能的方案。
離散傅氏變換
離散傅里葉轉(zhuǎn)換
離散傅立葉轉(zhuǎn)換
離散傅立葉變換

離散傅里葉變換
Experimental results demonstrate that performance of the proposed method is more efficient than that of DFT(Discrete Fourier Transform) and DWT(Discrete Wavelet Transform).
與基于離散傅里葉變換和基于離散沃爾什變換的對(duì)比實(shí)驗(yàn)表明，該方法可以獲得更高的查詢效率。
離散傅立葉轉(zhuǎn)換