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How do I plot d using Matlab
Not sure why you are trying to construct your signal like this. Take advantage of MATLAB's vector operations. Nt = 1...

12 years ago | 0

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Decimation factor with RESAMPLE
resample uses upfirdn() under the hood, which is ultimately a MEX file implementation of a polyphase filtering of the input, so ...

12 years ago | 1

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How to perform K-means for multidimensional data i.e of size 9*105
Hi, do you have the Statistics Toolbox? If so see the help for kmeans() However, kmeans() assumes that rows are observations ...

12 years ago | 0

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Answered
What is the syntax of fprintf? Suppose there are two flot numbers 1 and 2, and F_ID is the file identifier. Write the command to sabe the two numbers to F_ID?
fprintf(F_ID, '%1.1f %1.1f\n', X) where X has two columns. X is the variable in the MATLAB workspace contain the numbers. ...

12 years ago | 0

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Answered
Standart deviation between two matrix
What do you mean "between two matrix" std() on a matrix returns the standard deviation of the columns A = randn(100,6); ...

12 years ago | 0

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Answered
I need a code for Haar wavelet transform.
You can use wavedec2() with either wavelet name 'haar', or 'db1' load woman; J = 4; % level of the MRA [C,S] = wavede...

12 years ago | 0

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Answered
how to apply convolution to two,two dimensional signals ..let me illustrate you in an elaborate way ..if I(x,y) is one two dimensional signal and H(x,y) is another signal varying in both x and y directions.how can i convolve both the signals
Simply using conv2() You can also see the help for filter2(). Perhaps one of your matrices is a 2-D FIR filter for the data m...

12 years ago | 0

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using char as formula inside a script
What about just using subs (and you must mean -cos(2) not cos(2)) syms x funct = sin(x); intgl = int(funct) finval...

12 years ago | 0

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Answered
Why is there an error?
The simple answer is your input argument is spelled numpolys in the function declaration, but you spell it numploys in the for...

12 years ago | 0

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Answered
why is periodogram(y,w) not periodogram(y.*w)
The difference is that the syntax periodogram(y,w) uses the window normalization constant explained here: http://www.mathwork...

12 years ago | 0

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Answered
How to replace middle value of matrix 4x4 with the other matrix 2x2?
A = randn(4,4); B = randi([0 1],2,2); A([6 7 10 11]) = B; I determined those linear indices using: sub2ind([4 ...

12 years ago | 0

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how to apply dwt and inverse dwt for an image
Are you sure it is just not the scaling of the image in imshow() that is causing you problems? For example, note: ...

12 years ago | 0

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How can I convert more column vector into cell array
Maybe you need to be more precise x = randn(1000,1); x = {x}; Or let's assume you have the column vectors in a matri...

12 years ago | 0

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Adding noise with certain standard deviation to uncorrupted data
when you say 0.1047 rad/second, do you want these values to be bounded by a certain interval? or is the frequency value continuo...

12 years ago | 2

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sampling rate and fft
No, you don't need to specify the sampling rate, but if you wish to create a meaning frequency vector, then you need to know the...

12 years ago | 1

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Convert a string to number
how about just using format long data = '0.0782238'; data = str2num(data); format long data

12 years ago | 0

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Wich app/tool is suitable to elaborate experimental data?
The answer is likely YES, but I'm afraid you need to be much more specific about what your data are and what you are trying to d...

12 years ago | 0

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how to calculate and plot power spectral density of a given signal
If you have the Signal Processing Toolbox, it is easiest to use periodogram(). That handles all the scaling for you. ...

12 years ago | 7

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help using sortrows please
Hi Tom, sortrows(A) sorts the rows of the matrix A based on the entries in column 1. so: A = [100.3598 110.5698...

12 years ago | 0

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Select 'DeviceName' for dsp.AudioRecorder and dsp.AudioPlayer
Hi Daniel, can you try this: To select or change the Audio Hardware API, select Preferences from the MATLAB Toolstrip. Then ...

12 years ago | 0

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Select 'DeviceName' for dsp.AudioRecorder and dsp.AudioPlayer
Enter devinfo = audiodevinfo; then look at devinfo.output the name there should be a valid DeviceName property...

12 years ago | 0

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Answered
Question about summations from excel (backwards sum)
There are a couple issues here. A sum that goes from 0 to 20 has 21 elements not 20 as you indicate. Further, summation is com...

12 years ago | 0

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finding out phase shift in time domain from FFT result
You can get the phase from the output of fft() Fs = 1000; t = 0:1/Fs:1-1/Fs; x = cos(2*pi*100*t-pi/4)+cos(2*pi*200*t-...

12 years ago | 4

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Newbie: ploting Rectangular Signals and apply Grahm-Schmidt procedure??
Presumably you have these as N-dimensional vectors in the MATLAB workspace. Place those vectors as columns of a matrix and us qr...

12 years ago | 0

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Answered
how to find the numerical integration in matlab
a = 1; b = 2; f = @(x) sin(x)./sqrt(a+b*sin(x)); quad(f,0,2);

12 years ago | 0

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how to find the numerical integration in matlab
What version of MATLAB are you using? There is an integral() function for numerical integration. Of course, you'll need value...

12 years ago | 0

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Random Binary Sequence Generator
use randi() x = randi([0 1],10000,1);

12 years ago | 2

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how can I set double-value array input in a function?
This error message indicates that you have the function HighestPrice.m in a folder that is not on the MATLAB path. Let's say ...

12 years ago | 0

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Is it possible to change 'file.m' to 'file.exe' ?
Yes, but it requires other products you may or may not have. One way: <http://www.mathworks.com/products/compiler/ MATLAB ...

12 years ago | 0

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Answered
matlab code for digital filter design to remove gaussian noise from a speech signal ?
So what is not working about the above code? You can probably push the passband frequency a bit lower without affect intelligib...

12 years ago | 0