zero-finder.m

Symbol Timing Tracking Using Early-Late Techniques by matlab(Symbol Timing Tracking Using Early-Late T echniques by Matlab)

steepest decent and LMS algorithm in adaptive filters

本文先简要介绍了矩阵的积分和微分的定义；接着通过弹簧-质量块儿-阻尼器系统的例子，阐述了求解常微分方程数值解的常用方法；最后，在前两部分的基础上，总结了用MATLAB求解形如_X(t) = f(X(t); t) 矩阵微分方程数值解的方法。(In this paper, the definition of integral and differential of matrix is briefly introduced. Then the common method of solving numerical solution of ordinary differential equation is described by the example of spring mass block damper system. Finally, on the basis of the first two parts, the solution of the form of _X is summed up by MATLAB. (T) = f (X (T); t) numerical solution of matrix differential equations.)

说明：  针对低信噪比环境下基于能零比的端点检测方法准确率低的问题,提出了一种结合谱减法和短时零熵法的端点检测方法。首先通过功率谱减法对带噪语音进行降噪处理,然后结合短时平均过零率特征与谱熵特征,构造出一种新的语音参数,即短时零熵,最后运用双门限算法进行端点检测。实验结果表明该方法在复杂噪声环境下具有良好的端点检测性能,降低了检测的误判率。(To solve the problem of low accuracy of endpoint detection method based on energy zero ratio in low SNR environment, an endpoint detection method combining spectral subtraction and Short-term zero entropy method is proposed. Firstly, the noise is reduced by power spectrum subtraction, then a new speech parameter, short-time zero entropy, is constructed by combining the short-time average zero crossing rate and spectral entropy. Finally, the double threshold algorithm is used for endpoint detection. The experimental results show that this method has good performance of endpoint detection in complex noise environment, and reduces the rate of detection error.)

用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图，FFT实践及频谱分析(Matlab generated by sine wave, square wave, and the white noise signal, and display their time-domain waveform, FFT spectrum analysis of practice and)

MATLAB编写的ASK，PSK，QAM等调制方式的实现代码。该代码简洁易懂，可以对理解理论起到补充作用。(MATLAB prepared ASK, PSK, QAM modulation, such as the realization of the code. The code easier to understand, can play a complementary role to understand the theory.)

说明：  这个文件时无线传感网络拓扑算法中的泛洪算法代码(Algorithm for wireless sensor network topology in the flooding algorithm code)

该程序描述含噪语音信号的处理过程，MATLAB编程。(The program describes the noisy speech signal processing, MATLAB programming.)

dwt based watermarking and enhanced results .............

滑动轴承的有限长简化模型，利用雷诺方程计算出油膜厚度分布和压力(A simplified model of finite length sliding bearing, the use of the Reynolds equation to calculate the film thickness distribution and pressure)