logical-effort

Randomizing function for vectors and attributes

较为精确的逆变器仿真模型，包括控制系统，可作为初学者的重要参考,很有参考价值(More accurate simulation model of inverter, including the control system can be used as important reference for beginners，a good reference)

the intersection of cycl in matlab.show the result in figur.

说明：  噪声的加入小实验。用以实现 加入噪声的功能，从而发现，加入噪声的方法与表现。(MATLAB realase an input noise,and to make the photo become a nomal looking photo.)

This is run before things

一种（LFM）Linear frequency modulation雷达的仿真(Linear frequency modulation (LFM) radar simulation)

对数谱最小均方误差语音增强算法（LSA-MMSE），对加入有音无音判决进一步提高信噪比，消噪效果非常好。适合各种平稳噪声。(right spectrum minimum mean square error speech enhancement algorithm (LSA- MMSE). sound right to a sound judgment without further improve signal-to-noise ratio, denoising effect was very good. For a wide range of stationary noise.)

Spread spectrum merupakan sistem dimana sinyal yang dikirimkan memiliki bandwidth yang jauh lebih lebar daripada bandwidth sinyal informasinya sendiri. Proses pelebaran bandwidth sinyal informasi ini dilakukan pada sisi pengirim dan disebut spreading. Sebaliknya, proses penyempitan kembali bandwidth sinyal informasi dilakukan di sisi penerima, dan disebut despreading. Pada gambar 1 berikut menunjukkan proses yang terjadi pada sistem spread spectrum.

已采集线性震动系统（钢板）的输入与输出（时域幅值），求解系统数值解，幅频特征，并作图比较。(Have been collected linear vibration system (steel) input and output (time domain amplitude), numerical solution for solving the system, the amplitude-frequency characteristics, and mapping to compare.)

再传一个瑞利衰落信道，大家可以看看，很有帮助(this is a reigh fading channel)