Daniel kiracofe
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Vibration and Signal processing tutorials at http://www.mechanicalvibration.com
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Contribute at least one answer each month for 3 consecutive months
Awarded to Daniel kiracofe on 20 Jul 2017
Answer 1 question that was unanswered for more than 30 days
Awarded to Daniel kiracofe on 20 Jul 2017
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Awarded to Daniel kiracofe on 20 Jul 2017
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Awarded to Daniel kiracofe on 20 Jul 2017
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could u give me weiner program to remove audio noise
Did you try typing "Wiener filter matlab" into google first? There are all kinds of examples out there. Why don't you try that ...
mehr als 7 Jahre vor | 0
Store tensor history into multidimensional array
As far as I am aware, it is not possible to do what you want in matlab. There is no such thing as a 3-dimensional array literal...
mehr als 7 Jahre vor | 0
Can you help me out on making the BER vs SNR plot ?
Not 100% sure of the final answer here, but based on your statement that you are only getting 1 star on the graph, I assume that...
mehr als 7 Jahre vor | 0
retrieving the impulse response of a function using freqz (not impz)
I suspect your problem is that the system you are trying to study is unstable. i.e. the pole lies outside the unit circle, so t...
mehr als 7 Jahre vor | 0
Faulty result on contour map
Not 100% sure what you mean by "some values are false", but I suspect that you've just transposed x and y axis. Does a = ...
mehr als 7 Jahre vor | 0
Error with if elseif statements
In matlab, strings are arrays of characters. Two strings with different lengths have different array dimensions. e.g. 'dog'...
mehr als 7 Jahre vor | 0
How do I set counter = to a value when it is a persistent variable so if i reinitialize it each time through a loop it loses it purpose?
I'm not sure if I understand the question. Here is my guess at what you are asking. If this isn't it, please restate the quest...
mehr als 7 Jahre vor | 0
How to use anonymous functions and fsolve to find initial conditions given final conditions (projectile motion)
So it looks like you are integrating an ODE numerically. Starting from a set initial conditions, you are doing a simple time in...
mehr als 7 Jahre vor | 1
How to save a huge matrix efficiently?
If you have enough memory and are using a 64 bit version of matlab, using load() to load the entire matrix into memory will be q...
mehr als 7 Jahre vor | 0
Using interp1 multiple times to find a root : interp1 on a matrix without loops. Using interp1 multiple times for different values of query points without loops.
My first question here would be, are you pre-allocating root? i.e. do you have root = zeros(a,b,c) before your loop? If not, t...
mehr als 7 Jahre vor | 0
how to plot a unit step function
Do you want to do this numerically or symbollically? With the symbolic math toolbox, the heaviside() function is a unit step....
mehr als 7 Jahre vor | 1
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The code does not return the unwrapped phase. Why?
Not 100% sure I have the whole answer, but here's part of it. Look at these two lines side by side: %by first sequentially...
mehr als 7 Jahre vor | 1
Divide image into 3x3 pixels?
Depends. First, define "small" and "big". Do you mean it's okay for 10x10 but too slow for 1000x1000? Or does big mean 100,00...
mehr als 7 Jahre vor | 0
how to make table of ip address numbers
strsplit() will split up the strings for you. Then use sprintf() to make the formatting https://www.mathworks.com/help/matla...
mehr als 7 Jahre vor | 0
While loop not working
I see two issues with your code: 1) By virtue of the fact that you have "while j <9" at the top, this implies that you expect...
mehr als 7 Jahre vor | 0
How to round (or convert) an array to integer?
ceil() should work to round up to the nearest integer
mehr als 7 Jahre vor | 1
Round to specified decimal number?
this thread looks appropriate: http://www.mathworks.com/matlabcentral/answers/14495-rounding-elements-in-array-to-nearest-0-2...
mehr als 7 Jahre vor | 0
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ploting in for loop
"there is something wrong" is pretty vague, so I'm totally guessing at what your problem is. But this seems like a reasonable gu...
mehr als 7 Jahre vor | 0
Why do I get this error: A(I): index out of bounds; value 2 out of bound 1 (line 13)
Because the very first time the while statement's condition is checked, n=2, and x is a vector that has 1 element. You are aski...
mehr als 7 Jahre vor | 0
How to determine a frequency that contains 90% of the power of the signal?
1) create a power spectrum (i.e. using the results of fft()). I'm assuming you know how to do this, if not just ask 2) create...
mehr als 7 Jahre vor | 0
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sinewave generation:how generatea sine wave
t=0:0.001:1; freq = 10; signal = sin( freq * 2 * pi * t); plot(t, signal);
mehr als 7 Jahre vor | 0
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HELP with creating matrix for Jacobi and Gauss-Seidel method problem!!
the brute force approach would be something like this. for i = 1:80 for j = 1:80 if (i==j) a(i,j) =...
mehr als 7 Jahre vor | 0
I want to copy the rows of G1 to G2 in inner for loop but error occurs , please help
the first time through the loops, k = 15. but size(G1) is 11x16. So the first time you are effectively doing G2(o,:) = G1(1...
mehr als 7 Jahre vor | 0
simulating a poker game
You've got a good start. Here's a few comments 1) Instead of using randsample() and then finding and removing elements from t...
mehr als 7 Jahre vor | 4
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How to plot spectrogram in Matlab using one-year length data with the sampling rate of 50 Hz?
if you don't really need 50 Hz resolution, then use decimate() to make the vector length smaller. If you really do need 50 Hz...
mehr als 7 Jahre vor | 0
How to use fft2 and find spatial wavenumbers (kx & ky) ?
First, you need to reshape your data so that it is 10000x5x5 instead of 10000x25 ("reshape" command could help here). Then, a...
mehr als 7 Jahre vor | 1
I need to sum the values around the perimeter of a matrix, is there sum function in matlab
For your second sum, instead of sum(A(y,1:1:y)) think you wanted sum(A(x,1:1:y))
mehr als 7 Jahre vor | 0
Plot double Fourier series in MATLAB
I think your problem is this line A=4*(-1)^(m+n)*(sin(m.*x)*sin(n.*y))/(m*n); from the way you have written it, it looks l...
mehr als 7 Jahre vor | 0
Question on designing a filter to remove noise from a audio signal
step 1: analyze the signal and see if you can determine what frequencies are to be kept and what frequencies are to be discarded...
mehr als 7 Jahre vor | 0
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2 signals to 1 channel ? use FFT
assuming that t is a vector containing time intervals, and that F1 and F2 are frequencies, and A1 and A2 are amplitudes, then I ...
mehr als 7 Jahre vor | 0
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