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this is the code to determine frequency of spoken speech

64QAM数字预失真程序，预失真效果好。(64QAM digital pre-distortion process, the effect of pre-distortion well.)

This code is about wavelet estimate.

这个使用C编的stop operator，是s函数的格式。stop operator是Preisach 模型的一种基本模块。线性组合即成preisach 模型。(Stop operator, the C series is the format of the s function. The stop operator is one of the basic module of the Preisach model. The linear combinations Serve preisach the model.)

用FDTD建立二维模型，使用matlab实现衍射层析成像显示目标的电性参数(diffraction tomography)

图像转换成二进制序列、二进制序列还原成图像MatlaB自编源代码(Image is converted into binary sequences, binary sequence to restore self-compiled source code into an image MatlaB)

成功将QuartusII中生成的dds波形数据的tbl文件导入MATLAB中，实现十六进制数值转化成figure图形。(Successfully QuartusII dds waveform data generated in the tbl file into MATLAB, to achieve the hex value into figure drawing.)

说明：  用于计算高斯核函数，可以放在别的函数内使用，方便快捷(Used to calculate Gaussian kernel function, can be used in other functions, convenient and fast)

plotting voltage standing waves on a transmission line terminated with a complex load ZL

奇异谱分解技术，与相空间重构相结合，对信号进行降噪处理(Singular spectrum analysis technology, combined with the phase space reconstruction of signal noise reduction)