grating

Matlab Codes for student...exercises and functions.....

该文件包含了一些常用的声辐射噪声的特征提取方法，包括波形的包络特征，高阶谱特征，分形维特征，奇异指数特征等。(The document contains some common acoustic feature extraction method of noise, including waveform envelope characteristics, higher order spectral features, characteristic of fractal dimension, singular index characteristics.)

说明：  模型阶次的辨识,各种模型参数辨识方法一般需要假定模型的结构已知，实际上在多数情况下这是不现实的。当没有模型结构的先验知识时，需要利用系统的输入输出数据来确定模型的结构。(Identification of various model parameters generally need to assume that the model structure is known, in fact, in most cases this is unrealistic. When no prior knowledge of model structure, the need to use the system input and output data to determine the model structure.)

利用DFT变换实现数字水印的源代码，请大家赐教··(the code about the digital watermark in the region of DFT，using matalab)

runlength coding with zigzag. to run it call zigzag.m

HART协议文本，很难找到的，对开发HART协议相关特别有用。(HART text of the agreement, it is difficult to find, on the development of HART protocol related particularly useful.)

说明：  自己写的利用形态滤波方法去ECG基线漂移，附MIT-BIH心电数据库（受上传文件大小所限，只包含第124号数据供程序验证）(Written by myself, ECG baseline drift is removed by morphological filtering method, with MIT-BIH ECG database (limited by the size of uploaded files, only data No. 124 is included for program verification))

白志东给出的对于高维数据两总体均值检验的程序，可以参考下(high dimension)

这个示范ilustrates使用的三相Programmble电压源，PLL和可变频率正序电压和功率的测量块(This demonstration ilustrates use of the 3-Phase Programmble Voltage Source, PLL and Variable-Frequency Positive-Sequence Voltage and Power Measurement blocks)

说明：  matlab实现数字调频与解调，并进行结果显示。(matlab digital FM demodulation, and display the results.)