matlab-course

Adaptive filter for sound processing

在约束感兴趣频带的条件下，运用二阶锥规划方法设计二维FIR滤波器，(Designs an 2-D FIR filter with given desired frequency response H_des(w1,w2) using SOCP)

说明：  自己根据<最优化理论与基础>课本编的matlab程序 最优化问题求解: 牛顿法 自助输入目标函数及其梯度(Optimization: Newton Method Type in objective function and its gradient by yourself.)

说明：  用牛顿插值法对离散点进行差值，如果在原来的基础上增加一个点，用该种插值法速度很快，效率高(Using Newton)

这是对一维时间序列进行归一化计算的matlab程序(This is the one-dimensional time series to a calculation procedure of Matlab)

说明：  modem.qammod对象实现M-QAM调制器，本示例中M为16。其输入参数是从0到15的整数而不是4bits二进制数据。因此，在利用此对象的modulate方法之前需要对二进制数据序列x进行预处理。特别地, 先采用MATLAB中的reshape函数将x沿着矩阵的行方向重新整理成每行4bit数据，然后应用bi2de函数将4bit数据转换成相应的整数。(modem.qammod object implements M-QAM modulator M in this example is 16. Input parameter is an integer from 0 to 15 instead of 4bits binary data. Therefore, before using the method of this object needs to modulate the binary data sequence x pretreatment. In particular, the first use of MATLAB reshape function x 4bit rearranged into each row of data in the row direction of the matrix, and then apply bi2de 4bit function to convert the data into the corresponding integer.)

polydern: partial derivatives of a n-dimensional polynomial model created by polyfitn. usage: pout = polydern(p,diffvar)

This code is about designing of synthetics seismic data.

说明：  对图像进行二值化处理，是图像预处理的重要步骤内含4种不同的方法(The binary image processing, is an important step in image pre-processing consists of 4 different ways)

电波传播中的绕射分析，需要给出地面剖面貌一新模型(the diffraction loss of the radio propergation)