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论文作者:英语论文网论文属性:作业 Assignment登出时间:2012-09-16编辑:tinkle点击率:2542
论文字数:2023论文编号:org201209161922137608语种:中文 Chinese地区:英国价格:$ 22
关键词:DSP principlessystemsMATLAB
摘要:DSP principles, systems and implementation using MATLAB——英国伯明翰大学计算机作业,文章用matlab进行分析附上图标说明。
论文题目:DSP principles, systems and implementation using MATLAB
论文语种:英文
您的研究方向:理工
是否有数据处理要求:否
您的国家:英国
您的学校背景:伯明翰城市大学
要求字数:2000
论文用途:本科课程论文 BA Assignment
是否需要盲审(博士或硕士生有这个需要):否
补充要求和说明:
1. Given the following plot in Fig Q1. Deduce the equation for and hence verify using MATLAB.
Answer the question
From the Fig, we know at the point 0,0.005,0.01,0.015,and 0.02, maybe we can guess the frequencies 200 Hz,50 Hz, 150 Hz and https://www.51lunwen.org/computer/ so on. At the same time, we can get the combination coefficient using MATLAB, and get the result as shown as Fig. 1 as follows.
The M file conclude,
close all
t=-0.02:0.0001:0.02;
figure
y=3*cos(2*pi*200*t)+1*cos(2*pi*50*t)+2*cos(2*pi*150);
plot(t,2*y)
xlabel('Time sec');
ylabel('Amplitude volts');
title('f(t)=2*(3cos(2\pi200t)+cos(2\pi50t)+2cos(2\pi150t)))');
grid on
At the end, the signal contains the 200 Hz, and 0Hz, and 50 Hz, the equation is
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Using Matlab
% code4c.m
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%close all windows
close all;
clear all;
%clear screen in matlab
clc;
f1=1900; %f1 frequency in signal
f2=5100; %f2 frequency in signal
f3=7000; %f3 frequency in signal
Fs=20000; %sample frequency
N=1000; %the sample points
n=0:1/Fs:(N-1)/Fs;
y=sin(2*pi*f1.*n)+cos(2*pi*f2.*n)+sin(2*pi*f3.*n);
Sptool; %Matlab command