搜索资源列表
ECG-matlab
- 心电信号的去噪,简易傅里叶变换和简单的特征值检测-ECG denoising and fft
frequency
- 导入声音文件,进行快速傅里叶变换,得到声音的频谱。(Import audio files, fast Fourier transform, to get the spectrum of sound.)
J2GEZI
- 声全息成像算法,通过傅立叶变换和逆傅里叶变换将采样平面信息传递到目标平面,并重建目标平面信息。(In this algorithm, the sampling plane information is transmitted to the target plane by Fu Liye transform and inverse Fourier transform, and the target plane information is reconstructed.)
实验三、实验四代码
- t图像傅里叶变换,直方图均衡化,平滑,锐化滤波器(T image Fu Liye transform, histogram equalization, smoothing, sharpening filter)
图像处理
- 实现图像的基本处理,如傅里叶变换,形态学处理等(To achieve the basic image processing, such as Fu Liye transform, morphological processing)
Desktop
- 基于MATLAB对录音进行时域频域分析,并画出直观图,进行傅里叶变换(Based on MATLAB, the recording is analyzed in time domain and frequency domain, and an intuitive diagram is drawn to carry out Fourier transform)
filtertest
- 对数据做快速傅里叶变换,从时域数据变换到频域数据(Do fast Fourier transform of data, data transform from time domain to frequency domain data)
frft
- 区别去传统的傅里叶变换,对于非平稳信号而言,分数傅里叶变换是一个较好的方法,本程序实现了分数傅里叶变化对LPF类信号的估计。具有较高的学习价值(Different from the traditional Fourier transform, for non-stationary signals, fractional Fourier transform is a better method, this program implements the fractional Fourier tran
FastPeakFind
- 快速寻找图像中的尖峰,二维矩阵的尖峰。在二维傅里叶变换的特征提取中很有用,(find peak from an image or a 2D mat)
examplecode
- 一些信号处理的基本代码,包括傅里叶变换等等(Some basic signal processing code, including Fourier transform, and so on)
sfft-0.1.0
- 采用MATLAB编程实现二分查找法的稀疏傅立叶变换算法。研究算法参数变化对信号频谱的影响,并对特定的宽带跳频信号进行稀疏傅立叶变换处理,得出相应的频谱,并与快速离散傅立叶变换的结果进行比较。(Recurrence of sparse Fourier transform)
纹理特征提取
- MATLAB实现图像纹理特征提取:自相关函数法、灰度共生矩阵、分数阶傅里叶变换。GUI界面。运行后可自定义自相关函数的x和y轴偏移,灰度共生矩阵的距离和角度,分数阶傅里叶变换的阶数。输出相应的特征图。(MATLAB realize image texture feature extraction: autocorrelation function method, gray co-occurrence matrix, fractional Fourier transform. GUI interf
maichongzaosheng
- 经典MATLAB仿真例子,原始信号为带脉冲干扰信号,用EEMD分解,再进行傅里叶变换,能够作为学习EMD的经典例程。(This is a classic routine to learn matlab and EMD.We believe that you deserve to own it.)
MATLAB
- 16点DFT离散傅里叶变换的MATLAB仿真,给出最终的频域序列(16 point DFT discrete Fourier transform of the MATLAB simulation, given the final frequency domain sequence)
画包络谱和幅值谱的matlab程序
- 基于傅里叶变换,实现了包络谱和幅值谱分析。(Based on Fourier transform, envelope spectrum and amplitude spectrum analysis are realized.)
FM demoudulation
- 对调频的时域信号解调,首先差分再希尔伯特变换,对得到的值快速傅里叶变换。(frequency modulated signal demodulation,include difference,Hilbert transform and FFT)
image
- 调用自定义函数解决题目: 1.读取自然图像、生成合成图像、高相关图像、高去相关图像,完成压缩 2.得到傅里叶变换后的图像 3.fft中心变换\walsh变换,进行两种变换的对比 4.得到傅里叶变换后的图像和傅里叶变换需要的时间,显示变换后的图像,显示傅里叶变换时间随图像像素的变化 5.显示不同阶数butterworth高通滤波和低通滤波滤波器的传递函数和处理后的图像 6.调用butterworthw.m,显示原图像、原图像频谱、低通滤波、高通滤波的传递函数,以及滤波器处理后的图像 7.拉普拉斯高
MATLAB
- 傅里叶变换源程序,适用于离散数组,参考网上资料(Discrete Fourier transform source)
107551700第三次作业
- 根据短时傅里叶变换原理,计算并显示该语音段的短时幅度谱和功率谱;根据语谱图显示原理,编程实现该语音段语谱图的计算和显示,并尽量多地分析出语谱图包含的语音特征信息,用MATLAB提供的倒谱计算函数,显示该语音段的复倒谱和倒谱(According to the principle of short-term Fourier transform, the short range spectrum and power spectrum of the speech segment are calculat
shiyan
- matlab实验,离散傅里叶变换性质,滤波器设计(Matlab experiment, discrete Fourier transform properties, filter design)