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BiZHiFa
- 基于傅里叶变换后的峰值和次峰值的比值对非整周期fft的幅值和相位进行校正,其中添加不同窗函数。(Based on the ratio of peak to sub peak after Fourier transform, the amplitude and phase of non periodic FFT are corrected, in which different window functions are added.)
程序
- 对于故障进行频谱分析,快速傅里叶转换节省时间(For spectrum analysis, fast Fourier transform saves time)
fft
- 对数字图像进行傅里叶变换,查看其频谱图及相位图。(Fourier transform of digital images, to see its spectrum and phase diagram.)
nonlinear dynamics
- 针对转子系统非线性动力学图谱分析,绘制转子的轨迹图,相图,频谱图以及庞加莱图。(analysis about nonlinear dynamics of the rotor bearing system)
FFT
- 快速傅里叶变换示例,修改波信号文件以及采样频率,就可得到波形与频谱图、相位图(Fast Fourier Transform example, modify the wave signal file and the sampling frequency, you can get the waveform and spectrogram, the phase map)
fft
- 采集的原始信号时域显示和使用傅里叶变换进行频谱分析(The time domain display of the original signal and Fourier transform to analyze the spectrum)
apfft
- 全相位FFT变换,适用于对不同频率波形进行频谱分析(All phase FFT transform is suitable for spectrum analysis for different frequency waveforms)
matlab编程
- 对声音信号采样分析频谱,改变采样率,播放,音频信号加噪声(Spectrum analyzer of sound files)
xinghaoFFTbianhuan
- 1.利用MATLAB分析非周期信号的频谱 2.观察信号频谱变化验证傅里叶变换性质(1. Analysis of the spectrum of non periodic signals by MATLAB 2. Observe the spectrum change of the signal to verify the Fourier transform property.)
男女生声音辨别
- 根据不同声音,也就是不同信号的频谱,运用不同的方式,辨别出男生或者女生(According to different voices, that is, the spectrum of different signals, we can distinguish boys or girls in different ways.)
code
- 数据信号处理相关程序,如各类傅里叶变化、频谱分析等等,简单易懂。(Data signal processing procedures, such as Fourier transform, spectrum analysis and so on, are simple and easy to understand.)
imf_fft - 副本
- 计算每个IMF分量及最后一个剩余分量residual与原始信号的相关性;计算各IMF的方差贡献率;绘制FFT频谱(The correlation between each IMF component and the last residual component residual and the original signal is calculated; the variance contribution rate of each IMF is calculated; and the FFT
bin
- 对图像进行频谱分析,已达到不同目的的图像下一步处理。(to confirm fft sdkadjlaskjd l lajsdkjal jlk jlk jlasjd k)
fft_ana
- 给定了一个初始函数,利用FFT进行频谱分析,如果有自己的采样数据,只需设置采样频率即可实现频谱分析。(Given an initial function, spectrum analysis is carried out by using FFT. If there is one's own sampling data, only setting sampling frequency can realize spectrum analysis.)
VB-voice-spectrum-analysis
- 通过api函数获取声卡音频数据,并进行FFT变换,将频谱图显示出来。(Data sound card are obtained by api functions and converted with FFT to frequency graph.)
AnalyzingNeuralTimeSeriesData_MatlabCode
- 得到EEG数据,运行此代码画出脑电的频谱图,得到脑电的频谱分布(Run the code and draw the spectrum of EEG.)
DIY音乐频谱显示资料
- 使用FFT傅里叶变换,实现音乐频谱显示,程序是配点阵显示屏(The use of FFT Fourier transform, music spectrum display, the program is equipped with dot matrix display.)
声音频率频谱分析
- 1、了解声音信号的基本特征 2、掌握如何用Matlab处理声音信号 3、掌握FFT变换及其应用(1, understand the basic characteristics of sound signals. 2, master how to use Matlab to process sound signals. 3. Master FFT transform and its application.)
matlab
- 由两组已知的振动波形数据(excel表格形式),运用matlab生成对应的波形,利用FFT生成频谱图。要求将所有图像生成在一个图框下。包含设计文档和代码(Two groups of known vibration waveform data (excel form), using MATLAB to generate the corresponding waveform, using FFT to generate spectrum. Contains document reports and
FFT_all
- 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 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 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 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(fft analysis,plot rms spectrum,power density spectrum, etc.)