FFT的VHDL源代码

说明：  VGA图像显示，可实现图片和实现移动功能(VGA image display, enabling images and moving functions to achieve)

小波包分解，重构轴承振动信号，Hilbert包络，FFT进行频谱分析，以获得轴承故障频率。(Wavelet packet decomposition, reconstruction of bearing vibration signal, Hilbert envelope, FFT spectrum analysis to obtain the bearing fault frequencies.)

verilog 编写的ldpc编码，含有两个文件(LDPC written by Verilog)

FIR滤波器：自定滤波器的类型（低通，高通或带通）、设计指标（通带截止频率、通带波纹、阻带截止频率、阻带衰减） 1、根据指标选择合适的窗函数，用窗口设计法设计符合指标的FIR滤波器；并验证其性能是否满足预定指标。 (FIR filters: Custom filter types (low pass, high pass or band-pass), design specifications (passband cutoff frequency, passband ripple, stopband cutoff frequency, stopband attenuation) 1, according to indicators choose the right window function, using the window design method of FIR filter designed to meet the targets and verify that its performance meets the set targets.)

原理图输入法制作的32位加法器。。。。。。。。(adder32)

de2 70 开发板的演示程序，verilog语言编写，视频输入输出(de2 70 development board demo program, verilog language written, video input and output)

数字钟电路的实现，可以24小时计时，可调整时间！(Digital clock circuit implementation, a 24-hour timer, adjustable time!)

this come from alter ,you can look and find it on line about USB

CH4CH2CH1VHDL 数字电路参考书所有程序5-CH4CH2CH1VHDL digital circuit reference all proceedings 5

上海外滩看到的最大的LED显示屏的内核源代码，主要是完成视频信号的远距离传输的编解码与接口转换-Shanghai Bund to see the largest LED display in the kernel source code, mainly to complete the long-distance video signal transmission codec conversion and interface