说明：  录制一段个人的语音信号，并对录制的信号进行采样；画出采样后语音信号的时域波形和频谱图；给定滤波器的性能指标，采用双线性变换法和窗函数法设计滤波器，并画出滤波器的频率响应；然后用自己设计的滤波器对采集的信号进行滤波，画出滤波后信号的时域波形和频谱，并对滤波前后的信号进行对比，分析信号的变化；回放语音信号；最后，设计一个信号处理系统界面。(Record a personal voice signal, and recording the signal is sampled draw sampled speech signal time-domain waveform and frequency spectrum for a given filter performance, the bilinear transformation and design of filter window functions and draw the frequency response filter then filter of their own design collection of the signal filtering, to draw the filtered signal in time domain waveforms and frequency spectrum, and filtering the signal before and after comparison, analysis of signal changes playback audio signals Finally, a signal processing system interface design.)

simulation modulate & demod FM

IAE方法检测过程的振荡。绝对积分误差方法。(IAE approach for oscillation detection)

介绍活动轮廓模型的原理，根据作者原创论文编写的matlab程序。(Introduces the principle of active contour model, according to the author of the original paper writing in matlab.)

pca算法，有详细注释，通过光谱区分苹果酸甜度，对于想学习pca算法的初学者，有很大帮助(pca algorithm, detailed notes, by spectroscopic distinguish sour apple degree, want to learn pca algorithm for beginners, there are a great help)

最经典的语音降噪算法，MMSE-STSA 保证可用，记得好评(Shor time Spectral Amplitude Minimum Mean Square Error Method for Denoising noisy speech. based on log-Spectral MMSE Ephraim et al (1985))

说明：  此程序描述基于最大似然准则的频率估计。该算法可以估计短突发信号的载波频偏，这种算法估计的精确度高。(This procedure describes the frequency estimation based on the maximum likelihood criterion. This algorithm can estimate the carrier frequency offset of the short burst signal, and the accuracy of this algorithm is high.)

用形态学中骨骼化方法实现了图像细化，为后续工作如特征点提取提供了良好的素材(Method with skeletal morphology achieved thinning, for the follow-up, such as feature extraction provides a good material)

This is a blurring tool. Applying this code can Blurr an image used for identity protection

simple samples matlab(matlab easy introduction)