matlabharris

A filter is a system which modifies some special frequencies reletive to the others. As a result it is applicable in some applications when it is necessary to have different gains & phase shifts at different frequencies to perform specific filtering tasks. For example in an audio file which is corrupted by noise it is convinient to use a filter to cancel those frequencies which are affected by noise and consequently having a better sound quality. During this MATLAB experiment we are trying to cancel the noise frequencies out of the original signal frequencies to get the original signal. Due to do this task, different types of filters such as FIR and IIR filters are used. In FIR filters, we use two type of common windows such as fixed window like Hanning and adjustable window like Kaiser. In IIR filters four different types of filter such as Butterworth, Chebyshev I, Chebyshev II, Elliptic are used.

Matlab画平滑曲线的两种方法（ 拟合或插值后再用plot即可） 自然状态下，用plot画的是折线，而不是平滑曲线。有两种方法可以画平滑曲线，第一种是拟合的方法，第二种是用spcrv，其实原理应该都一样就是插值。下面是源程序。(You can then use the plot) Natural state, with the plot is a line drawing, instead of a smooth curve. There are two ways to draw a smooth curve, the first one is the fitting method, and the second is to use spcrv, in fact, the same principle should be that the interpolation. Here is the source.)

M次方谱估计可以同时估计psk信号的码元速率和载波频率。mpsk函数和test_signal在cwt压缩包内。(M th spectral estimation can estimate the symbol rate and carrier frequency qpsk signal. mpsk function and test_signal in cwt compressed package.)

一个用matlab编的可以动的飞机动画制作小程序（源程序在网上下载，经本人稍加改动），注意六个状态值是需要外部输入的，比较适合做飞行器仿真试验用。(a series of the aircraft can move small animation (downloaded from the Internet source, I is modified), to six state value is a need for external input, more suitable for aircraft simulation experiment.)

sample FFT Analyser using matlab. using cos and sin function.

This is some MATLAB m-files to simulate a communication system using convlutional channel coding and Viterbi algorith of decoding.

这是有关MATLAB学习的一些编程技巧和使用的一个程序示例(MATLAB STUDY)

This code contains MATLAB code to automatically create a wireless network

使用热力学第一定律计算内燃机的燃烧放热率(use the First Law of Thermodynamics to calculate the heat release rate of internal combustion engine)

basic fourier series gui for beginners