LawandZJ

generate agilent waveform file

实现快速傅立叶变换的程序，是matlab下的M文件，内部还和含有一个介绍PDF文件(fast Fourier transform procedures, the Matlab M paper Internal also contains an introduction and PDF files)

this is a matlab GUI developed to record speech of the user in various languages. this GUI contains various user interfaces that help to store the recorded word to a wav file. also the recorded signal will be plot in the axes window.

to generate number gumbel random (hidrology)

时频分析的工具，完成时频分析，希望能够对大家有帮助，共同进步！(Time-frequency analysis tools, complete the time-frequency analysis in hopes of help, make progress together!)

用MATLAB产生M序列作为系统的输入，根据传递函数，仿真输出，并得出输入的自相关函数和输入输出的互相关函数。(M sequence generated by MATLAB as input, in accordance with transfer function, simulation output, and come to enter the auto-correlation function and the input and output of the cross-correlation function.)

1、 生成多周期线性调频信号，并对其进行频谱分析； 2、 对仿真生成的信号利用两种窗口函数进行STFT变换生成时频分析图(1, to generate multi-cycle chirp signal, and its spectrum analysis 2, the signal generated by the simulation window function using two STFT transform to generate time-frequency analysis chart)

此函数用于IS-95前向链路系统的仿真，包括扩频调制，匹配滤波，RAKE接收等相关通信模块,仿真环境: 加性高斯白噪声信道. (This function is used for IS-95 forward link system simulation, including the spread spectrum modulation, matched filter, simulation environment, RAKE receiver and other related communication module,: additive white Gauss noise channel)

构造一组输入为白噪声加三个频率非常接近的正弦波，其信噪比为10dB，观测长度为256。试分别用普通AR谱估计和采用功率噪声抵消算法的AR谱估计估计这组信号的频率，并比较结果。(constructed a group of white noise input plus three very close to the frequency sine wave, the signal-to-noise ratio of 10dB. Observing length of 256. Were used to test the general AR spectral estimation using power and noise canceling algorithm for the estimation of AR spectrum estimation of this group of signal frequency, and the results of the comparison.)

解线性方程组的一种迭代法，类似于共轭斜量法：预善共轭斜量法(Solution of linear equations of a iterative method, similar to conjugate oblique method: Pre-good conjugate oblique method)