pex8311代码实现

使用nios2点亮一个led灯，使用软件quartus13.0，开发板de2-115(nios2 led quartus13.0 de2-115)

1）选择一个语音信号作为分析对象，或录制一段语音信号； 2）对语音信号进行采样，画出采样前后语音信号的时域波形和频谱图； 3）利用MATLAB中的随机函数产生噪声加入到语音信号中，使语音信号被污染，然后进行频谱分析； 4）设计用于处理该语音信号的数字滤波器，给出滤波器的性能指标，画出滤波器的频率响应； 5）对被噪声污染的语音信号进行滤波，画出滤波前后信号的时域波形和频谱，并对滤波前后的信号进行比较和分析； 6）回放各步骤的语音信号，给出相应处理程序及运行结果分析。(1) Select a voice signal as an analysis object, or record a voice signal 2) sampling the voice signal, draw the waveform and frequency spectrum of the time domain before and after sampling the speech signal 3) using the random function in MATLAB generated noise was added to the speech signal, the speech signal to be contaminated, and then spectrum analysis 4) for processing the speech signal, the digital filter design, given the performance of the filter to draw the filter' s frequency response 5) on the noise pollution of the speech signal is filtered, time-domain waveform and spectrum draw before and after filtering the signal before and after filtering, and the signal for comparison and analysis 6) playback of the speech signal for each step, given the results of the corresponding processing procedures and run analysis.)

A programming language that can decode alpha numeric

说明：  fpga版本的数码管动态扫描程序，可供学习(FPGA version of the digital tube dynamic scanning program for learning)

一个用于锁相环开发的资料，请作为参考！-A phase-locked loop for the development of the information, please as a reference!

多功能卡的源代码，verilog编写，用于多功能的数据接收-verilog code of mutiple function card

来自于NIOSII的那些事，该书详细地介绍了NIOSS的使用过程，非常适合初学者。(From the NIOSII those things, the book are detailed in this paper NIOSS use process, very suitable for beginners. )

vga显示彩色图像ip，alter开发板-vga display color image,vhdl,quartus

在赛灵思的FPGA上实现turbo码的编码程序,使用Verilog语言实现。(Implemented on Xilinx FPGA in the turbo coding principle, the use of Verilog language.)

VHDL实现 DDS。大家共享吧，一起学习，一起进步(VHDL realize DDS. U.S. to share it with learning, with progress)