unsolved function
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>> n=-3:0.13; >> x=stepseq(0,-3,3); ??? Undefined function or method 'stepseq' for input arguments of type 'double'.
>> n=-5:5; >> x=impseq(-3,-5,5); ??? Undefined function or method 'impseq' for input arguments of type 'double'.
please assist on the above unsolved functions
Giannis
回答（3 个）
Charles Obare
2021-3-5
编辑：Walter Roberson
2021-3-5
save this from the text.
function [x,n] = stepseq(n0,n1,n2)
% Generates x(n) = u(n-n0); n1 <= n,n0 <= n2
% ------------------------------------------
% [x,n] = stepseq(n0,n1,n2)
%
if ((n0 < n1) | (n0 > n2) | (n1 > n2))
error('arguments must satisfy n1 <= n0 <= n2')
end
n = [n1:n2];
%x = [zeros(1,(n0-n1)), ones(1,(n2-n0+1))];
x = [(n-n0) >= 0];
_______________________________________________________________________Next file
function [x,n] = impseq(n0,n1,n2)
% Generates x(n) = delta(n-n0); n1 <= n,n0 <= n2
% ----------------------------------------------
% [x,n] = impseq(n0,n1,n2)
%
if ((n0 < n1) | (n0 > n2) | (n1 > n2))
error('arguments must satisfy n1 <= n0 <= n2')
end
n = [n1:n2];
%x = [zeros(1,(n0-n1)), 1, zeros(1,(n2-n0))];
x = [(n-n0) == 0];
Paulo Silva
2011-8-1
0 个投票
Both of those functions aren't avaiable from MATLAB instalation files, they are from some book or files, create them first or download them and put them in the current path or some other path that MATLAB knows about.
You can get those functions and the rest of them from: Digital Signal Processing Using MATLAB by John Proakis
Sean de Wolski
2011-8-1
0 个投票
I've never heard of those functions before, nor are they on the file exchange.
3 个评论
Paulo Silva
2011-8-1
They are from a book about signal processing, you can easily get them using google :)
Sean de Wolski
2011-8-1
Ahh
The G00g13 wins again.. Apparently they are on the FEX as well.
Paulo Silva
2011-8-1
I remembered the functions from one class I had last year, that book and files were great to understand signal processing.
类别
在 帮助中心 和 File Exchange 中查找有关 Scopes and Data Logging 的更多信息
2011-8-1
2021-3-5
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