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With the instruction "h = firpm(n, f, a);", can you give example to show ho to determine the parameters n,f &a?
Help doc is clear enough. The only point that maybe causes a confusion you is the "order" n. So keep in mind that firpm(n...

7 years ago | 0

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How to generate multisine from phase and magnitude information?
try ifft()

7 years ago | 0

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How to make cos function work only for short period then 0 of long period, and repeat?
I hope, this will help : clearvars; clc; close all; % simulation time step dt=0.001; % periods of ON and ...

7 years ago | 0

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How to change the default x-axis unit in a Bode diagram to Hertz?
clc;close all; clc % test system s=tf('s'); H=(s-1)/((s-3)*(s-2)) % bode [mag,phase,wout] = bode(H); ...

7 years ago | 2

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How to matlab z-transform of x(n)=((4/3)^n) u(1-n)
Symbolic math toolbox, calculates only unilateral z transform. So, we have to use some properties in order to calculate what you...

7 years ago | 0

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step response from an equation
Use this: clear; clc; close all; % sympolic math toolbox syms s, num_planta=sym(1); %numera...

7 years ago | 1

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I am trying to create an if/else staement over a range of values and display the corresponding value for each values variable. Ex if a<5 then c=2 b=1 else c=3 b=4 but over a range of a values displaying each c or b value for each of the a values
Dear Bardon, At the code you gave us, tp never exceeds 1500, so regarding the if-statement, always the first part of it is e...

7 years ago | 0

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How to matlab ztransform with time shift?
If you like to use <https://www.mathworks.com/products/symbolic.html symbolic math toolbox> : clearvars; clc; close all; ...

7 years ago | 0

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Problem with inverse Fourier Transform of a known signal
Allow me to make an observation: when you perform ifft() upon signal Y in order to get time signal y2, it seems that Y is an "on...

7 years ago | 0

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Answered
how to plot the PDF of a random variable
From the integral that you use in order to calculate marginal PDFs, I guess that x,y are into the interval [0, +inf]. ...

7 years ago | 0

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Answered
How to enter a trajectory equation?
Here is my suggestion : clearvars; clc; close all; % definition of variables syms x y theta_0 v_0 g y_0 %...

7 years ago | 0

Answered
Why do I get "sin(t)^2" when I "int(sin(2*t))"?
Results of int(), are correct. Actually sin(t)^2 and -cos(2t)/2 differ only by a constant 1/2. <</matlabcentral/answer...

7 years ago | 1

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Question

when I run an m-file, Is there a way to "change current folder" to the folder that this m-file is placed, by means of some commands at the beginng of the file ?
I have a m-file, for example mytest.m and at the beginning of it , I would like to place a command (or commands), in order to "c...

7 years ago | 1 answer | 0

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answer

Answered
how can i Calculate area of plotted data using trapz in matlab?
Before using trapz, do the following new_data(:,2)=new_data(:,2)-min(new_data(:,2)); this shifts all of your graph upw...

7 years ago | 1

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Answered
Problem with noisy gaussian function
You must use <https://en.wikipedia.org/wiki/Central_limit_theorem Central Limit Theorem> Bellow is an rough attempt of mine:...

7 years ago | 1

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Answered
Please help me with "is an invalid algebraic loop because of a self loop around the parent non-virtual subsystem"
You have to put some delay, at these three signals that goes from the output, directly to the input of the "MATLAB Function" blo...

7 years ago | 1

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Fast Fourier Transform for csv file with multiple column
You must find Fsampling. You can achieve this by observing values of vector t. If t(k)-t(k-1) is the same for each 1<k<len...

7 years ago | 0

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Answered
How to send the value from test script(m file) to main m file which is not written as a function?
Write values of Modes into a file at your disk: save('fileModes.mat','Modes') then you can use load fileModes.mat...

7 years ago | 0

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Conversion of complex number in to fixedpoint representation
An example: clear; clc; close all; % a complex number x=0.3435637634857634+1i*0.66735646778675; % paramete...

7 years ago | 0

Answered
fft of impulse response does not equal bode of transfer function
You have to change the time interval that you used to define stoerung_t Try a larger one: stoerung_t = [0 : stoerund_d...

7 years ago | 0

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I want to find out intersection points of two circles in symbolic form. The two circles are C1: x^2+y^2=(r+a)^2 and C2: (x-(b-l/2))^2+(y-sqrt3 *L/2)^2=(r+a)^2. Can anyone help me?
When you will use it inside a loop with real values for a, b, l, L, r, maybe it is better to use vpasolve() instead of solve() ...

7 years ago | 2

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Answered
How to plot gt please help me ????
clear; clc; syms t g(x) x(t) g(t) = piecewise(-0.5<t<0,(2+4*t),0<=t<+0.5,(2-4*t), 0) x(t)=sym(0); fo...

7 years ago | 1

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Answered
Discrete FIR Filter help
1) Check the input. Is it "sample based" or it is a sample 2) Check how you watch the output 3) Of course you put the coef...

7 years ago | 0

Answered
Does anybody know how to generate a signal for this? T=0.01 seconds and sampling frequency = 10000Hz.
clear; clc; close all; % parameters T=0.01; Fs=10E3; Ts=1/Fs; % define base signal s= @(t) ((0<=t) &...

7 years ago | 0

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Answered
Square of 20 random number sum up to 1
clear ; clc; N=20; r=rand(1,N); normFactor=sqrt(sum(r.^2)); r=r/normFactor; figure; plot(r,'bo'...

7 years ago | 0

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How to creat this filter
Your transfer function can be transformed in the following form: <</matlabcentral/answers/uploaded_files/131362/tf.jpg>> ...

7 years ago | 0

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Answered
finding slope of a signal
A script that calculates *mean slope* : clc; clear; close all; %% generate input signal x=0:1:1500; y=(-0.002*...

7 years ago | 1

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Answered
determination of e^x using Taylor series
clear; clc; syms A B x_1 x_2 x_3 syms a_1 a_2 a_3 %definition of equation myEq= A==B*exp(a_1*x_1+a_2*x_2+a...

7 years ago | 1

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Answered
how to solve this equastion : y''-1=exp(x) second order diff. equastion by use matlab command please reply
Of course , Trosten gave the solution for this ODE, but maybe it worths to have a look on how we can use symbolic maths toolbox ...

7 years ago | 0

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Hi I'm trying to execute the below code to observe the impact of noise on the FFT of the signal. Even if i'm increasing noise content there is little impact on the signal's Spectrum. Why ?
Your signal is a sinusoidal signal. All its energy is concentrated to one frequency. On the other hand, noise power spreads al...

7 years ago | 0

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