Help with Numerical Methods Review (CMPS407) 1. State in your own words what is the least...
Help with Numerical Methods Review (CMPS407)
1. State in your own words what is the least square method? Why we need to use this method? Write a Matlab or C/C++ to do least square fitting on the following data points: data point: (-2, 13), (-1, 5), (0, 7), (1, 12), (2, 29).
2. When can aliasing happen in the Fourier series processing? How to prevent this?
3. What’s Gibbs phenomenon? How to avoid this? Write a flow chart to implement your idea (only algorithm is needed). If you write detailed Matlab/C++ code, extra credit will be given.
4. What’s the advantages of FFT? Show an example we can take the advantages.
5. What’s digital watermark? Based on your Project 3 found below, how the digital signature is confirmed in your project? If you implement it using FFT, will the complexity different from wavelet transform? Project 3 Given the following data point: (-2, 13), (-1, 5), (0, 7), (1, 12), (2, 29), using cubic spline interpolation method to find out S(z) in (-2,2). Plot the graph to show data points and the piecewise polynomial values. Note: You may use Matlab, C/C++, Fortran, Linux shell script etc. for your coding/program/script.
6. State in your own words how to do formula finding in real data processing? How do we know whether the data formula fitting is good enough?
7. Minor points: Which topics are you interested in and you think that they are important for your future jobs/careers? What topics you feel “boring” to learn/study?
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Help with Numerical Methods Review (CMPS407)
1. State in your own words what is the least...
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Create a NOTEPAD or PDF file that restates the problem in your own words, specifies what input is needed, w...
Create a NOTEPAD or PDF file that restates the problem in your own words, specifies what input is needed, what output is expected, the step by step process (algorithm) to get the output from the input, and test data (input for which you know the expected output) for each of the 3 problems given below. You should not write any actual C++ code. Make sure the problem statement is in your own words and is descriptive enough so someone not...
Can you please help me answer Task 2.b? Please show all work. fs=44100; no_pts=8192; t=([0:no_pts-1]')/fs; y1=sin(2...
Can you please help me answer Task 2.b?
Please show all work.
fs=44100; no_pts=8192;
t=([0:no_pts-1]')/fs;
y1=sin(2*pi*1000*t);
figure;
plot(t,y1);
xlabel('t (second)')
ylabel('y(t)')
axis([0,.004,-1.2,1.2]) % constrain axis so you can actually see
the wave
sound(y1,fs); % play sound using windows driver.
%%
% Check the frequency domain signal. fr is the frequency vector and
f1 is the magnitude of F{y1}.
fr=([0:no_pts-1]')/no_pts*fs; %in Hz
fr=fr(1:no_pts/2); % single-sided spectrum
f1=abs(fft(y1)); % compute fft
f1=f1(1:no_pts/2)/fs;
%%
% F is the continuous time Fourier. (See derivation...
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The current and voltage data are recorded below every 5 seconds for 1 minute (called a...
The current and voltage data are recorded below every 5 seconds for 1 minute (called a minute test): time = 5:5:60; current = (16 25 32 40 45 47 44 40 33 26 20 11]; voltage = [2 5 4.5 4.7 5.5 5.4 4.2 3.9 3.3 3 2.8 2.1); a) Write a script that uses cubic equation to model both the current and voltage data as a function of time. The script will plot both sets of data points and...
1) a) Write MATLAB function that accepts a positive integer parameter n and returns a vector...
1)
a) Write MATLAB function that accepts a positive integer
parameter n and returns a vector containing the values of the
integral (A) for n= 1,2,3,..., n. The function must use the
relation (B) and the value of y(1). Your function must preallocate
the array that it returns. Use for loop when writing your code.
b) Write MATLAB script that uses your function to calculate the
values of the integral (A) using the recurrence relation (B), y(n)
for n=1,2,... 19...
can someone help me do this and maybe also the picture of the scope explain how you get it. thankyou! Frequency-sh...
can someone help me do this and maybe also the picture of the
scope explain how you get it. thankyou!
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5.i) What will be the output of the script: for i-1:7 for j- 1:i fprintf(%d", j)...
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Create a NOTEPAD or PDF file that restates the problem in your own words, specifies what input is needed, what output is expected, the step by step process (algorithm) to get the output from the input, and test data (input for which you know the expected output) for each of the 3 problems given below. You should not write any actual C++ code. Make sure the problem statement is in your own words and is descriptive enough so someone not...
Can you please help me answer Task 2.b?
Please show all work.
fs=44100; no_pts=8192;
t=([0:no_pts-1]')/fs;
y1=sin(2*pi*1000*t);
figure;
plot(t,y1);
xlabel('t (second)')
ylabel('y(t)')
axis([0,.004,-1.2,1.2]) % constrain axis so you can actually see
the wave
sound(y1,fs); % play sound using windows driver.
%%
% Check the frequency domain signal. fr is the frequency vector and
f1 is the magnitude of F{y1}.
fr=([0:no_pts-1]')/no_pts*fs; %in Hz
fr=fr(1:no_pts/2); % single-sided spectrum
f1=abs(fft(y1)); % compute fft
f1=f1(1:no_pts/2)/fs;
%%
% F is the continuous time Fourier. (See derivation...
The current and voltage data are recorded below every 5 seconds for 1 minute (called a minute test): time = 5:5:60; current = (16 25 32 40 45 47 44 40 33 26 20 11]; voltage = [2 5 4.5 4.7 5.5 5.4 4.2 3.9 3.3 3 2.8 2.1); a) Write a script that uses cubic equation to model both the current and voltage data as a function of time. The script will plot both sets of data points and...
1)
a) Write MATLAB function that accepts a positive integer
parameter n and returns a vector containing the values of the
integral (A) for n= 1,2,3,..., n. The function must use the
relation (B) and the value of y(1). Your function must preallocate
the array that it returns. Use for loop when writing your code.
b) Write MATLAB script that uses your function to calculate the
values of the integral (A) using the recurrence relation (B), y(n)
for n=1,2,... 19...
can someone help me do this and maybe also the picture of the
scope explain how you get it. thankyou!
Frequency-shift keying (FSK) and Phase-shift keying (PSK) Two other modulation schemes are the phase-shift keying (PSK) and the frequency-shift keying (FSK). These are illustrated in Figure 8 b and c respectively. In phase-shift keying the carrier signal changes phase by a radians when the digital signal changes values. In frequency-shift keying a 0 is transmitted at a different carrier frequency...
5.i) What will be the output of the script: for i-1:7 for j- 1:i fprintf(%d", j) end fprintf('\n') % start a new line. end 5 (i) For ax2 + bxc 0, the value of x is given by 2a Write a MATLAB function quadrasol () that will have three inputs ( a,b, and c) and two outputs corresponding to the solutions of the equation. It may be more compact if you defined another variable 'd' for the term inside the...
ve in your project. 2. Write a report in your own words (1 page, double-spaced), which contains the analysis of the results you received. In this report consider, but do not be limited to the following: 1. What is the difference between gross domestic product (GDP) and gross national product (GNP)? What is the difference in what GDP measures compared to GNP? Based on the table, what calculations must you make to determine GNP from GDP? 3. What is national...
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