搜索资源列表
FFT.rar
- FFT编程实例 进行FFT变换,显示频谱图 ,FFT transform FFT programming examples show that the spectrum graph
dft2.zip
- 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.
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
- fft的算法,数据处理成频谱图,波形图的功能!-fft algorithms, data processing into the frequency spectrum, waveform features!
waverecord
- 就是按输入的时间录音,回放,显示波形及频谱图 录音过程中有动态频谱显示 -Itis input by the time recording, playback, show the waveform and frequency spectrum of dynamic recording process of the spectrum shows
MATLAB
- 用matlab对wav文件进行频谱分析,并画出频谱图-att
FFt
- 其中图片说明: A: 傅里叶变换后频谱图 B:陷波函数作用后的频谱图 C:经逆变换的滤波后图像,效果不是很理想 Ifft2:为验证自己的快速傅里叶变换程序的正确性,用matlab自带逆变换程序将频谱逆变换后图形,与原图相符,说明快速傅里叶变换程序正确。-One Photo caption: A: After the Fourier transform frequency spectrum diagram B: the role of Notch function, the fre
eg-fft
- fft1.用Matlab产生正弦波,矩形波,以及白噪声信号,并显示各自时域波形图 2.进行FFT变换,显示各自频谱图,其中采样率,频率、数据长度自选 3.做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱 4.用IFFT傅立叶反变换恢复信号,并显示恢复的正弦信号时域波形图-fft1. Using Matlab generated sine wave, rectangular wave, as well as the white noise signal, and displa
2FSK
- 2FSKd调制和解调,绘制出的频谱图形-2FSKd modulation and demodulation, to map out the spectrum graphics
imorgin
- 用C语言写的图形初始化及画图子程序,可在同一屏幕中画出对应的时间序列和频谱。-Using C language to write and draw graphics initialization subroutine can be painted in the same screen in the corresponding time series and spectrum.
fftlphp
- 此程序是1是对图像进行fft变换并显示频谱图,2是对图像进行低通和高通滤波并显示-This program is an fft transform is image and display spectrum, 2 is the image low-pass and high pass filtering and display
画频谱图
- 网上看到的,用于画频谱图,希望能够有帮助,也希望大家喜欢。(See online, used for painting frequency spectrum, hoping to help, and I hope you like it.)
1
- 编写AM、DSB、SSB的调制程序,并画出时域波形和频谱图(Write the modulation program of AM, DSB and SSB, and draw the time domain waveform and spectrum diagram)
WpfApplication1_boxed1
- 输入地震单炮记录(segy格式数据),得到频谱图(Small program, input seismic single gun record (segy format data), get spectrum diagram)
频谱分析程序
- 能够画出信号的频率关系,画出频谱图,并且返回频谱中的峰值,以及对应的频率(It can draw the frequency relationship of the signal, draw the spectrum, and return to the peak in the spectrum, and the corresponding frequency.)
图象变换
- 图象变换 从傅立叶变换的频谱图中可以看出,提高分辨率以后,其边缘更加平滑,锯齿状明显减弱。但其傅立叶变换后的图像没有明显改变。 3》DC系数移动 其系数移动以后,频谱分量都集中到了频谱的中间。 4》滤波器频率响应(Image transform,As can be seen from the spectrum diagram of Fourier transform, the edge is smoother and the serrated is significantly reduc
练习频谱图生成excel
- 利用LabVIEW正弦波信号生成函数,和频谱转换子vi生成频谱图,并将频谱信号生成excel保存(Spectrum diagram of sine wave signal and create excel)
vmd
- 轴承故障信号vmd分解及输出频谱图和幅值图,内含main、vmd及输出频谱图和幅值图三个程序,直接用main就行(VMD decomposition of bearing fault signal and output spectrum and amplitude diagram)
绘制频谱图matlab
- 频域图生成代码,用于生成频域内的时域对应图(whole time graphy.zip for graphy)
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)