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频谱分析程序
- 频谱分析技术是研究周期性现象中最为常用的一种统计分析方法，其主要是通过对一复合的波系进行数据变换，将其分解成若干振幅和相位不同的简谐波，并找出其中振幅最大的波，即该复合波中的主要频率。频谱分析的方法较多，其中最常用的是快速傅立叶变换法(FFT)-spectrum analysis techniques to study the cyclical phenomenon most commonly used a statistical analysis method, its principal i
FFTModify
- 用能量重心法，对基2分裂的FFT算法进行校正，在整周期采样的条件下，幅值，相位，频率等可以达到很高的精度 -energy center, two pairs of split-the FFT algorithm for correction, in the whole cycle of sampling conditions, the amplitude, phase, frequency, etc., may achieve high accuracy
pade_mine
- 对函数进行PADE近似程序可以对多种函数进行近似，尤其在FFT的频率分析中PADE的作用很大-right Valued function approximation for a wide range of procedures can function approximation, especially in the FFT frequency analysis of the significant role Valued
dit-dif-fft
- 快速傅立叶算法，按时间和按频率抽取的基2算法-Fast Fourier algorithm, time and frequency taken by the base 2 Algorithm
FFT.rar
- 快速傅里叶变换子程序，可用于频谱分析、频率域滤波,FFT subroute
FFT
- 利用FFT估计正弦信号的频率,要估计一个叠加了高斯白噪声的正弦信号 的频率 ，可以通过对x(n)做傅里叶变换，得到频谱图，找出幅度的最大值对应的频率值 ，进行多次变换，求出均方误差 。改变信噪比SNR，通过仿真可以得出随着信噪比增加，均方误差减小。-Sinusoidal signal using FFT frequency estimation, to estimate a Gaussian white noise superimposed on the frequency of sinusoi
fft
- 对图像进行快速傅里叶变换，在频率域去除高频信息再逆变换到空间域，完成图像栅格信息的消除。-Fast Fourier transform of the image, in the frequency domain to remove high-frequency information and the inverse transform to the spatial domain, to complete the elimination of the image grid of informati
FFT
- FFT算法的基本原理是把长序列的DFT逐次分解为较短序列的DFT.按照抽取方式的不同可分为DIT-FFT(按时间抽取)和DIF-FFT(按频率抽取)算法.按照蝶形运算的构成不同可分为基2、基4、基8以及任意因子(2n,n为大于1的整数),基2、基4算法较为常-The FFT algorithm s basic principle is decomposes gradually long sequence DFT into short sequence DFT. different may div
LLVFourierTransforms
- fft变换代码,采用基2的频率域变换代码.-fft transform code, the use of the base 2 of the frequency domain transform code.
dtft
- N分别取45,50,55,60时的FFT频率响应曲线绘图. -N respectively 45,50,55,60 when FFT frequency response curve drawing.
FftLab
- FFT傅立叶频谱分析，从程序的演示可透视出频率频谱相互的换算与复数的关系！-FFT Fourier spectral analysis, from a procedural perspective of the presentation can be a frequency spectrum of the conversion of mutual relations with the plural!
fft
- ASK,FSK,PSK信号调制及用FFT法进行频率估计-ASK signal modulation and the FFT algorithm with frequency estimation
fft
- 快速傅立叶算法，将离散信号从时域转换到频率-Fast Fourier algorithm, the discrete time-domain signal from the switch to the frequency of
fft_conv_filters_DSPFunction_ByC
- 数字信号处理中频率响应、相关函数、fft、各种滤波器的C语言实现（各文件有功能说明）-The C edition of many DSP functions such as Frequency function,fft,filters and so on
fft
- 对正弦信号进行傅里叶变化，然后估计频率，在不同信噪比下画出均值方差的图-In the data process the measured complex time signal is converted into frequency signal by DFT to get vibration information regarding frequency and amplitude of the rotor
fft
- 一个用于快速傅里叶变换的c++源程序，其中包括按时间抽样变换和按频率抽样变换两种算法。程序运行速度非常快。-One for the fast Fourier transform c++ source code, including sampling by time and by changing the frequency sampling transform algorithms.
analysis-the-result-of-FFT
- 详细介绍了FFT变换的物理意义，分析了fft后的频率分辨率等-Detail the physical meaning of the FFT transform, after analysis of the fft frequency resolution, etc.
FFT-real
- 实序列的FFT算法 当isign=1时,对实序列data[1..n]做FFT, 返回正频率的系数保存在data[1..n]中 当isign=-1时,对实序列做IFFT,所得结果乘以2/n为原序列 n必须为2的幂-//The real sequence of FFT algorithm// When isign = 1, the sequence of real data [1 .. n] do FFT,// Return positive freq
Rife-Jane-word-fft
- 这是一个关于Rife-Jane频率估计算法的文档，里面其计算原理，文档是我的作业-This is a document on Rife,-Jane frequency estimation algorithm, which the calculation principle, the document is my job
hua_fft
- 求特定频段的fft变换，通过设定频率范围画fft。(Find a specific frequency band fft transform, set the frequency range by drawing fft.)