MATLAB: Applied Digital Signal Processing

applied digital signal processingfold functionMATLAB and Simulink Student Suitepersegen functionunitstep function

Hello everyone,

I am reading a book named Applied Digital Signal Processing. Some Matlab codes have been introduced in this book as examples. Some syntaxes and functions in these examples are coming from a toolbox that I cannot find. "fold", "unitstep", "delta", and "persegen" are some functions that I got errors on Matlab when I ran them. Here are the book functions: [x,n] = delta(n1,n0,n2); % Unit impulse sequence [x,n] = unitstep(n1,n0,n2); % Unit step sequence [x,n] = unitpulse(n1,n2,n3,n4); % Unit pulse sequence x = persegen(xp,Np,Nps); % Periodic sequence

and here my code: x=[-1 0 1 2 3 4 4 4 4 4]; n= -5:4; [G,f1]=fold(x,n);

Can somebody tell me what the Matlab toolbox accompany with this book is?

Thanks,

Best Answer

These MATLAB functions are not part of a MathWorks toolbox. I am guessing that the book probably has a CD of supporting functions, or provides info on where to find these functions online.

Related Solutions

MATLAB: Help plotting a signal pulse

I always define functions similar to ‘unitstep’ as a function:

unitstep = @(t) t >= 0;

This makes it easier to work with. (The argument itself is not important. I used ‘t’ here because that is generally how the step function is defined.)

Second, since:

‘I have u[n] and x[n], but the pulse is "Plot of h[n]" which is just h[n] = u[n] - u[n-3]’

is now straightforward:

h = unitstep(n) - unitstep(n-3);

and you get the plot you want!

It may be necessary for you to tweak some of the rest of your code to work with the function version of ‘unitstep’. That should not be difficult. (I only ran what was necessary to deal with ‘h’ and plot it, since that appears to be where the problem is.)

MATLAB: How to define functon Unit sample sequence

function [x,n]=edinecenImpuls(n0,n1,n2) 
n=n1:n2; 
x=(n-n0)==0;

Best wishes

Torsten.

Best Answer

Related Solutions

MATLAB: Help plotting a signal pulse

MATLAB: How to define functon Unit sample sequence

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