fixed_lookback_call

（1）离散余弦变换DCT基底灰度图像绘制（2）离散傅里叶变换DFT基底灰度图像绘制((1) discrete cosine transform DCT base gray image rendering (2) Discrete Fourier Transform DFT basal gray image rendering)

龙格库塔法的求解，将精确解（1）和龙格库塔法的图像放在子图一中，将精确解（2）和龙格库塔法的图像放在子图一中。(Runge-Kutta)

利用matlab--无刷直流电机建模，然后电流滞环控制(Use of matlab-brushless dc motor modeling, then current hysteresis control)

用matlab做得仿真，对图像进行DCT变换，分成8*8的块(matlab based simulation,dct transtion,8*8 block)

说明：  利用巴特沃斯高通滤波、理想高通滤波、高斯高通滤波处理图像，根据需求使图像得到锐化，并比较他们的效果。(Use bart wo high-pass filter high-pass filter, ideal, gaussian high-pass filter processing images, according to demand makes the image get sharpening, and compare their effect. )

图像处理中通过小波实现图像增强。基于matlab函数实现。(Image processing wavelet image enhancement. Based on matlab function implementation.)

Perl language course, very complete with examples

用于压缩传感解码,有较快的解码速度和解码质量。(This code is for decoding of compressive sensing,which is fast and of good decoding quality. )

设计一个IIR数字低通滤波器， 逼近一组模拟滤波器的指标参数（通带截止频率Wp=2*pi*2000rad/s,阻带边界频率Ws=2*pi*3000rad/s,通带波纹 Rp=3db, 阻带衰减Rs=15db, 采样频率f=10000Hz）； 分别用脉冲响应不变法和双线性变换法实现设计，列出传递函数并描绘模拟和数字滤波器的幅频和相频响应曲线。用上述设计滤波器完成几组给定信号的滤波，证明滤波器的有效性和滤波范围限制.(Design a IIR digital low-pass filter, approaching a group of analog filters indicator parameters (pass-band cut-off frequency Wp = 2* pi* 2000rad/s, stop-band edge frequency Ws = 2* pi* 3000rad/s, pass-band ripple Rp = 3db, stop-band attenuation Rs = 15db, the sampling frequency f = 10000Hz) were used to change the impulse response method and bilinear transformation method for design, list and describe the transfer function of analog and digital filter amplitude-frequency and phase-frequency response curve. A filter was designed with the completion of the above-mentioned groups of a given signal filtering, to prove the effectiveness of filters and filter limit)

HI MATLAB CODE FOR BCH AND TURBO