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4阶龙格库塔，定义法计算rossler系统lyapunov指数，结果比较精确！(4-order Runge-Kutta, defined method rossler system lyapunov index results more precise!)

These are codes for implementing Bandpass filters in MATLAB. Can be used for study in Digital Signal Processing

说明：  In this paper, a new scaling-based image-adaptive watermarking system has been presented, which exploits human visual model for adapting the watermark data to local properties of the host image. Its improved robustness is due to embedding in the low-frequency wavelet coefficients and optimal control of its strength factor HVS point of view. Maximum-likelihood (ML) decoder is used aided by the channel side information. The performance of the proposed scheme is analytically calculated and verified by simulation. Experimental results confirm the imperceptibility of the proposed method and its higher robustness against attacks compared to alternative watermarking methods in the literature

对语音信号进行分析时需要先进行预加重处理，起到提升高频的作用。(The speech signal analysis needs to first conduct a pre-emphasis process, to enhance the role of high frequency. )

这是基于matlab编程用pso方法解决多峰函数的问题(This is based on matlab programming method with pso problem solving multimodal function)

实现Nakagami信道仿真,用在无线传输信道中(Achieve Nakagami channel simulation, using the wireless transmission channel)

说明：  beamforming 最低旁瓣 利用的是cvx(The lowest side lobe of beamforming is CVX)

说明：  包括时间延迟参数的确定，G_P方法，相空间重构等源码。绝对可以运行。(Including the time delay parameters, G_P methods, such as phase-space reconstruction source. Definitely can run.)

key material for engeering mathmatics!(key material for engeering mathmatics.)

GM（1，1）源代码，计算原始数据的残差、关联度、小误差概率等。同时画出原始数据和预测数据对比图(GM (1,1) source code to calculate the raw data residuals, correlation, and so a small error probability. At the same time draw the raw data and forecast data comparison chart)