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FFT快速傅里叶变换源码
用于进行快速傅里叶变换,进行频谱分析的例子源代码。
DFT分析
- 应用离散傅里叶变换DFT,通过MATLAB实现对连续信号频谱分析,以满足理论分析和工程实际的需要。 -application DFT Discrete Fourier Transform, right through MATLAB continuous signal spectrum analysis, in order to meet the theoretical analysis and practical needs.
azq
- 从信号处理的角度,通过对一维信号的离散傅里叶变换频谱图特性进行研究,进而推广到二维,daolr-signal processing from the point of view of one-dimensional signals in the discrete Fourier transform spectrum characteristics, thus the promotion of two-dimensional, and d
Fourierclassicalanalyse
- 傅里叶变换和傅里叶变换的性质,周期信号和非周期信号的频谱分析,卷积和卷积定理,抽样信号的傅里叶变换和抽样定理,相关、能量谱和功率谱.-Fourier transform and Fourier transform nature, the cycle-cycle signal and the signal spectrum analysis, Convolution and convolution theorem, the samplin
FFTforTimeData
- 数字信号处理用的快速傅里叶变化,可提供分段,复盖(Overlap),时程图,频谱图。-digital signal processing using Fast Fourier changes, can provide sub-covering (Overlap) time- and frequency spectrum.
source
- 基于傅里叶变换的频谱分析程序,感觉很不错,传上来与大家共享。-Based on the Fourier transform spectrum analysis program, I feel very good, Chuan-up with the U.S. share.
test
- 对语音信号加窗(汉明窗)并进行短时傅里叶变换,观察其频谱图,同时进行相位幅值分析-fft
FFT
- 快速傅里叶变换子程序,可用于频谱分析、频率域滤波-FFT subroute
dft2
- 对二维图像进行离散傅里叶变换,分别给出了直流分量移动到频谱中心前后的频谱图样。-Two-dimensional images of the discrete Fourier transform, respectively, given the spectrum to move to the DC component of the spectrum before and after the design center.
sin
- 实现正弦波的傅里叶变换,并且画图 频谱图-The realization of the Fourier sine transform, and spectral graph drawing
FourierTransform
- 傅里叶变换源代码,将一幅图像经过傅里叶变换显示成为频谱图-Fourier Transform
data
- 此程序为c++实现频谱分析,可用于对傅里叶变换进行分析-This procedure for the c++ to achieve spectral analysis, Fourier transform can be used to analyze
FFT
- 对文本文档内的数据进行傅里叶变换,得到波形 -频谱图,相位图的对话框界面-For text document data within the Fourier Transform, the wave- frequency spectrum, phase diagram of the dialog box interface
FFT
- 这是一个经典的fourier translate 傅里叶变换的程序 计算图像的中心点并标记和傅里叶频谱图的最大能量环并标记-This is a classic Fourier transform fourier translate the program to calculate the center of the image and mark and Fourier frequency spectrum of the maximum
1
- 本上传讲解了傅里叶变换与频谱分析之间的关系,通过fft的到信号的频谱图-Explained the Fourier transform of the upload and spectral analysis of the relationship between the fft of the signal through the frequency spectrum
proj04_02
- 中心化后的傅里叶谱,傅里叶频谱和平均值,计算图像的平均值-Fourier spectrum and average value
双矩形脉冲的正反傅里叶变换
- 双矩形脉冲的正反傅里叶变换 (1) 画出以上式子所定脉冲的时域波形; (2)画出信号的振幅谱 abs(sf);(3) 将第二步所得的频谱求傅里叶反变换,并画出其波形,并与原始信号对比;(Positive and inverse Fourier transform of double rectangular pulses (1) draw the above formula set by the pulse wavefor
matlab傅里叶变化性质验证
- 二维傅立叶变换的Matlab实现,是利用图像处理软件对给 出的图像进行傅立叶变换处理。 自行设计一幅图像,验证离散傅立叶变换的性质,如: 频谱图中高频分量迅速衰减,可分离性,平移,周期性与共 轭对称性,旋转、线性和比例性,平均值。(The Matlab implementation of two-dimensional Fu Liye transform is based on image processing software
傅里叶谱与频域低通滤波
- 傅里叶谱与频域低通滤波 (a)从图书网站下载图4.41(a)并计算其(居中)傅里叶谱。(b)显示频谱。(c)在等式(4.8-7)中实现高斯低通滤波器。您必须能够指定结果2D函数的大小,M x N。此外,您必须能够指定高斯函数的中心位置。(d)从图书网站下载图4.41(a),并对其进行低通滤波,以复制图4.48中的结果。(Fourier Spectrum and Lowpass Filtering in Frequency Domain
快速傅里叶分析(最新)
- 利用快速傅里叶分析的方法绘制数据的频谱图,分析其是否有固有周期(Drawing the spectrum of random number)