自适应粒子群算法matlab代码

小波变换的关键在于将原始信号分解到哪一层，在哪一层中找到模极大值点(wavelet transform is the key to where the original signal decomposition level, in which one found modulus maximum points)

中值滤波和均值滤波程序，经常用于数字图像处理中，是基本的图像预处理程序(medium filter and average filter program,it is often used in image progress )

步进频雷达成像系统设计与仿真实现mabatlb(step frequency system radar target imaging)

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wiener filter for enhancement audio file

It s a code of sliding mode coulomb friction

直升机显模型跟踪控制系统仿真实例（MFCS）控制仿真，具有实用性的控制方法！(helicopter MFCS control system simulation。)

PMSM直接转矩控制系统的空间辨识,辨识出系统介次,和状态空间模型(All-digital fuzzy direct torque control system of space identification, identify the system interface, and the state space model)

alab document on ASK PSL and QPSK modulation techniques

说明：  这里介绍了一种基于自适应滤波的噪声抵消法，采用归一化最小均方误差算法，采集实际噪声环境下各种不同信噪比的带噪语音样本进行降噪处理，实验结果表明，处理后信号的信噪比得到了较大程度的提高，大大改善了听音效果，具有很高的可懂度，且语音自然度好，没有失真；并与谱减法进行了比较，自适应噪声抵消法的降噪幅度比谱减法有一定提高，在听音效果上，用自适应噪声抵消法处理后的语音在清晰度，自然度方面优于谱减法。(Here a novel adaptive noise cancellation method using normalized least mean square algorithm, collecting a variety of actual noise environment, the SNR of noisy speech samples for noise reduction, experimental results show that treatment After the signal to noise ratio was greater improvement in the level, greatly improved the listening results, with high intelligibility and naturalness of speech is good, no distortion and were compared with the spectral subtraction, adaptive noise cancellation law than the spectral subtraction noise reduction rate of a certain improvement in the listening results, and with the adaptive noise cancellation method in the treatment of voice clarity, naturalness is better than spectral subtraction.)