fast fourier transform algorithm

基本解释

Using the Fast Fourier Transform algorithm signal capture through simulation and other methods to carry out a comparative analysis is a method to improve;
基於傅立葉算法實現信號快速捕獲功能，通過倣真竝與其他方法進行了比較分析，改進了算法；
In order to improve the operation tempo of Hilbert transform, this paper recomposed the primary operation method on the basis of FFT (Fast Fourier Transform Algorithm).
爲了實現希爾伯特變換的快速計算，本文以FFT快速傅裡葉變換爲基礎，對原算法進行了改進。
With this method, the spectrum leakage can be avoided more effectively than Fast Fourier Transform algorithm and better accuracy can be assured in certain frequency range.
這種方法與傳統的快速傅立葉變換算法相比，避免了由於基波頻率提取不準而造成的頻譜泄漏，在一定的基波頻率變化範圍內具有較高的精度。