介绍 FFT 基2/4 算法的演算过程,并以FPGA 实现的可行方案-on FFT-based 2 / 4 algorithm for the calculation process, and to FPGA options

自己用c语言编的DSP中的FFT算法 自己用c语言编的DSP中的FFT算法-own use language series DSP FFT algorithm using their own language c addendum to the DSP FFT algorithm c language with its own series of the DSP FFT algorithm using their own language c addendum to the DSP FFT al

使用MATLAB函数中的FFT命令计算离散时间信号的频谱，以加深对离散信号的DFT的理解及其FFT算法的运用。-using MATLAB function FFT calculation order discrete-time signal spectrum, to increase the discrete signals in the DFT and FFT algorithm understanding of the application.

首先读取csv文件（来自示波器或其他来源），csv是字符格式的文本文件。然后，对采样波形进行谐波分析，将输入信号分解成：A0直流分量，A1基频分量，A22次谐波，A33次谐波……N噪声。采用的是加hanning窗的FFT算法。最后，求取 总谐波失真率THD（%）(First read the CSV file, and CSV is a character format text file. Then, the input signal is decomposed into A0 DC comp