PNcodeacquisition

清华大学数学实验之一元与多元回归分析之幻灯片与MAT源码(Tsinghua University, one math test and multiple regression analysis element of the slide with the MAT-source)

the signal detection in the MC-CDMA system

Project report of cookie mgmt

说明：  基于形态学的的玻璃瓶边缘检测，和canny算子对比，可出图。(Glass bottles based on morphological edge detection, and the canny operator compared to a map.)

Modified binary PSO PSO with mutation tools of genetic method combined

DTFT plot the spectrum of a sinusoidal signal

改程序主要对无线通信中的瑞利慢衰落通信信道进行了matlab仿真，可于仿真试验时进行调用。(Reform procedures for major wireless communications in the slow Rayleigh fading communication channel to carry out the matlab simulation, simulation tests can be carried out call.)

by this code you can distinguish circle from diamond in a 4*4 table... this code is easy and understandable enjoy it...

二维声子晶体带隙计算，XY色散关系计算，matlab编程(Two dimensional phononic crystals bandgap calculation, calculation of XY dispersion relation, matlab programming)

1. 给一段原始的语音信号（可以是自己录制的一段语音），加上一频率为3.8kHz的高频余弦噪声和频率为3.6kHz的高频正弦噪声（幅度自己可以选择），用窗函数设计一滤波器（要求最小阻带衰减为50dB）对加噪后的语音信号进行滤波，画出滤波器的频率响应曲线，画出滤波前后的时域图和频谱图。 需要用到的函数： fir1 用窗函数设计FIR滤波器的函数 2. 用GUI设计一界面（如图1所示）完成如下功能： 1） 输入一语音信号，画出语音信号的时域图和频谱图； 2） 对语音信号加噪处理，画出加噪后的时域图和频谱图； 3） 给定滤波器的性能指标，采用几种不同的方法设计滤波器对加噪信后进行滤波，画出各滤波器的频率响应曲线，画出滤波后的时域图和频谱图。 (1. to some of the original speech signal (which can be a voice you record yourself), plus a cosine frequency of 3.8kHz frequency noise and frequency of 3.6kHz frequency sinusoidal noise (in the range that they can choose), with a window function to design a filter (requires a minimum stop band attenuation is 50dB) after adding noise to the speech signal is filtered, the filter frequency response curve to draw, draw diagrams and time-domain spectrum before and after filtering. Need to use the function: function fir1 with window function design FIR filter design 2. Using a GUI interface (Figure 1) complete the following functions: 1) an input speech signal, the speech signal in the time domain to draw graphs and spectrum 2) adding noise to the speech signal processing, draw diagrams and time-domain plus noise spectrum after 3) to set the filter performance, using several different methods designed to filter letter after adding noise filtering, draw the frequency response curve of each )