make function to shift discrete signal
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hello I am currently studying DSP and using matlab . I build a function that shifting signals and the out put of this function is n and y for exmaple :
x=[ 2 3 0 -5 2 1 ]; n=-1:4;
and i want that y(n)=x(2-K)
and this is my code :
clc;
clear all;
x=[ 2 3 0 -5 2 1 ];
n=-1:4;
m=2;
k=-1
shifting_by_m (x,m,n,k)
stem(n,x)
and the function is :
function [n,x] =shifting_by_k (x,m,n,k)
if (k<0)
n=m+flip(-n) %%h(m-k)
x=flip(x)
else (k>0)
n=(-1)*(m-n)
x=x
end
end
the question is there a way to write in my main code '(2-k)' and that the function will get that m=2 and k<0 ?
3 个评论
Adam
2018-6-26
If your function only supports a scalar k then why don't you just pass in 2-k as that argument? Where k is whatever you want it to be in your original equation and within the function it is just the single shift - i.e. whatever you pass it, which would be the result of 2-k
tomer polsky
2018-6-26
Adam
2018-6-27
Why are you trying to pass '2-k' into a function? Just calculate 2-k and pass the result of that into the function as the desired shift.
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2018-6-26
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