pra6

峰值信噪比（PSNR），一种评价图像的客观标准。水印提取判断效果。(Peak Signal to Noise Ratio (PSNR), objective criteria for evaluating image. Determine the effect of watermark extraction.)

关于端点检测的几种方法，语音样本是自己录制的，对传统算法做了一些改进，加入了去噪，去噪之后再进行端点检测，均调通 vad0303：自己设置调整门限为一定值 vad0310：根据能量值和过零率设置门限，自适应门限值 vad0310_2：基于比例因子的门限自调整 vad0310.m加入了噪声，端点检测前都噪声进行了处理 entropy.m：基于自适应子带频谱熵的稳健性语音端点检测 可用于语音增强及端点检测 dbdoor.m：双门限算法，用于语音端点检测。可以通过调整门限值，并加入门限自适应算法，实现语音端点检测(Several methods on endpoint detection, recording their own voice samples, the traditional algorithm has made some improvements, adding a de-noising, and then after de-noising endpoint detection are transferred through)

本工具箱详细地说明了matlab的各种算法实现，方便大家学习matlab的基本应用，进一步加深了对matlab的认识。(The toolkit explains in detail the various algorithms matlab, matlab facilitate them to learn the basic application, and further deepen the understanding of matlab.)

this is for mini project

SUBROUTINE Gauss 高斯消去法的子程序 分享给大家(SUBROUTINE Gauss_Expunction a methed to solve matrix )

利用两段信号的相对差，对非整周期采用信号的频谱进行幅值和相位的校正。(The amplitude and phase of the signal spectrum are corrected by using the relative difference of the two segment signals.)

物理层网络编码，也称为双向协同通信，采用的是BPSK加差分调制，主要分析系统的BER曲线(Physical layer network coding, also known as two-way collaborative communication, using BPSK differential modulation increases, the BER curve of the main analysis system)

模糊K均值聚类算法的matlab程序，很实用，很有针对性。(K fuzzy means clustering algorithm matlab procedures, very useful and very targeted.)

说明：  用VHDL语言编写的FFT程序，有些参考价值哦(VHDL prepared by the FFT procedure, some reference value oh)

运用matlab程序源码，进进行模糊PID设计 (Use of matlab program source code, into the fuzzy PID design)