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lecture series of matlab

按键式电话如下图所示，当按下某一个键时会产生如图所示的相应的频率模拟信号，并通过对该信号频率的检测，识别出对应的按键。试通过编写一个数字信号分析程序，模拟完成上面的功能。(Touch-tone phone as shown below, when pressing a key will be generated as shown in the corresponding frequency analog signals and, through detection of the signal frequency to identify the corresponding button. Test through the preparation of a digital signal analysis program to simulate the function of the completion of the above.)

用wavedec2()函数对b1,b2两幅图像进行小波分解, 采用’haar’小波, 尝试着分解到第二或第三级 融合两幅图像。(With wavedec2 () function b1, b2 two images using wavelet decomposition, using haar wavelet, trying to break into the second or third grade fusion of two images.)

灰色模型GM_1_1,一种数学建模的实用方法，对你的比赛，和应用很有帮助(A good mathematical modeling tool, It is very helpful to your study MATLAB)

说明：  SOGI及DS,QS传递函数MATLABm文件及伯德图绘制((SOGI, DS, QS Transfer Function MATLABm File and Bird Diagram Drawing)

PWM of Two level inverter

IEEE致力于电气、电子、计算机工程和与科学有关的领域的开发和研究，该程序为IEEE30节点潮流计算,电压初值计算，(IEEE is committed to electrical, electronics, computer engineering and science-related fields of development and research, the program flow calculation for the IEEE30 bus voltage initial calculations,)

说明：  削减平均恒虚警(TM-CFAR)检测器和双门限（double threshold）检测器，用于强噪声环境下的多目标检测(detectors based on the trimmed mean technique and double threshold technique.)

Matlab详细手册 Matlab详细手册 Matlab详细手册()

小波变换加VQ语音识别程序。用小波变换来提高语音特征的性能，从而提高VQ算法的识别率(Wavelet transform plus VQ speech recognition program. Using wavelet transform to improve the performance of speech features to enhance the recognition rate of VQ algorithms)