快速傅里叶变换 (fast Fourier transform),即利用计算机计算离散傅里叶变换(DFT)的高效、快速计算方法的统称,简称FFT。快速傅里叶变换是1965年由J.W.库利和T.W.图基提出的。采用这种算法能使计算机计算离散傅里叶变换所需要的乘法次数大为减少,特别是被变换的抽样点数N越多,FFT算法计算量的节省就越显著。 FFT(...
4.1 离散傅里叶变换DFT(Discrete Fourier Transformation) 离散化多项式的一种方法是将值代入到多项式中,依次求出点值。显而易见,这种方法的复杂度是 的,这与我们降低复杂度的想法是冲突的。 于是我们引入了FFT的经典算法——Cooley-Tukey 算法,来降低离散化的复杂度,这是一个基于分治策略的算法。 给定一个多项式 ...
英文缩写 FFT 英文缩写FFT 英文全称Fast Fourier Transformation 中文解释快速傅立叶变换 缩写简介 信号处理领域的一种算法。 FFT意思,FFT的意思,FFT是什么意思?爱站小工具网缩写频道为您提供有关于FFT的解释和缩写,快速傅立叶变换的英文缩写是什么
英文缩写 FFT 英文全称Fast Fourier Transformation 中文解释快速傅立叶变换 缩写分类电子电工,数学物理 CPLD可编程逻辑器件 GFC凝胶过滤层析 IEC离子交换层析 pI等电点 AC亲和层析 IFE等电聚焦电泳 ISH原位杂交 TGGE温度梯度凝胶电泳 HA异源双链分析法 DGGE变性梯度凝胶电泳法 ...
The Fast Fourier Transform (FFT) is a family of numerical algorithms which has a large number of uses in many fields of computational science and in particular in signal and image processing. Typically the transformation can be thought of as taking a signal which is a function of time, for...
FFT(FastFourierTransformation)快速傅里叶变换
The invention provides a fast fourier transformation (FFT) parallel method based on a multi-core digital signal processor (DSP) platform. The method comprises the following steps that: a main processor uniformly distributes data of an original point N to be subjected to FFT to all P processors...
The fast Fourier transform (FFT) is a particular way of factoring and rearranging the terms in the sums of the discrete Fourier transform. Brought to the attention of the scientific community by Cooley and Tukey,4 its importance lies in the drastic reduction in the number of numerical operations...
Synonyms FFT Definition A fast Fourier transform (FFT) is an algorithm to compute the discrete Fourier transform that decomposes a sequence of values in the time domain into components of different frequencies. It is applied to EEG analysis to calculate the power in various frequency bands such ...
所以问题转变为: 1.如何将多项式系数表达转变为多项式点值表达 2.如何将多项式点值表达转变为多项式系数表达 由此引出了 离散傅里叶变换 DFT(Discrete Fourier Transformation)和 逆离散傅里叶变换 IDFT(Inverse Discrete Fourier Transformation)离散化多项式的一种方法是将值代入到多项式...