sy4

截取语音处理的图片设计滤波器，并对被噪声污染的语音信号进行滤波，画出滤波前 后信号的时域波形和频谱，并进行比较分析； (The statics is very good for the semaster)

采用半功率法计算阻尼率，避免人工计算带来的误差(Calculated using half-power damping rate, to avoid the error caused by manual calculation)

通过极坐标变换获得图像的中心投影曲线，然后利用傅里叶变换获得图像的不变特征，从而实现对发生形变的物体的识别。(Polar coordinates to obtain the image through the center of projection curve, and then Fourier transform to obtain images of the same features, enabling the identification of objects deformation occurred.)

This code is meant to compute speckle contrast maps from raw speckle images.

希尔伯特黄变换的C语言实现，包括希尔伯特谱分析，瞬时频率的求解等。(Hilbert Huang Transform C language, including Hilbert spectral analysis, such as instantaneous frequency solution.)

计算A加权后的噪声净噪声值并将结果保存到excel文档(Calculate the Netnoise after A-filter and save the result into excel file.)

MATLAB的基本知识，基本运算与函数整理(MATLAB basic knowledge, basic calculations and function finishing)

讨论了区间数据分布函数估计的方法及其应用(Discussed the range of data distribution function estimation method and its application)

one dimensional denoising using ROF method

电位电极系测井曲线，用matlab编写,可用于学测井的人参考(Potential electrode system logs, prepared by matlab, people can learn logging for reference)