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1.录制一段自己的语音信号,对录制的信号进行采样 画出采样后语音信号的时域波形和频谱图 给定滤波器的性能指标,采matlab设计数字滤波器,并画出滤波器的频率响应 然后用自己设计的滤波器对采集的信号进行滤波,画出滤波后信号的时域波形和频谱,并对滤波前后的信号进行对比,分析信号的变化 回放语音信号。2.(1. Recorded his voice for some signal, the signal is sampled on the record draw sampled speech signal time-domain waveform and frequency spectrum performance for a given filter, mining matlab digital filter design, and draw the filter frequency response then use their own filters designed to filter the collected signals, to draw the filtered time domain waveform and frequency spectrum, and comparing the signal before and after filtering, analysis of signal changes playback of audio signals. 2.)

基于simulink仿真，应用tdm、pcm、2dpsk技术实现两路语音同时传输(Simulink simulation-based, application tdm, pcm, 2dpsk technology to achieve two-way simultaneous transmission of voice)

这是随即信号处理中的有关应用，是一个脉冲多普勒雷达的matlab 仿真(This is the aplication of random signal )

一维fdtd程序，自由空间，调制高斯脉冲波源(1 dimensional fdtd program)

实现复杂网络受随机攻击和蓄意攻击的仿真结果分析。(The simulation results of complex networks subjected to random attacks and deliberate attacks are analyzed.)

此例程可以用来进行希尔伯特变换，得到包络谱，利用差分公式得到瞬时频率(This routine can be used to carry out Hilbert transform, obtain envelope spectrum, and obtain instantaneous frequency by using difference formula)

速度环采用自抗扰技术，运用矢量控制对永磁同步电机进行控制(Speed loop using ADRC Technology)

非常实用的基2DIT-FFT函数，直接运行可以分析原理。(Very practical base 2DIT-FFT function, operation can be analyzed directly principle.)

create Color Histograms

introduction to pattern recognition