Code sigadd help me
显示 更早的评论
function [x, n] = signalplus(s1, n1, s2, n2)
% n1 is the sample positions of s1
% n2 is the sample positions of s2
i understood it but i can write in matlab
example:
s1=[2 5 7]; n1=2
s2=[3 2 6]; n2=3
s=s1 + s2 = [3 4 11 7]
thank you :)
i find a code but it not work , i use : sigadd([2 5 7],2,[3 2 6],3) error
function [y,n] = sigadd(x1,n1,x2,n2)
% implements y(n) = x1(n)+x2(n)
% -----------------------------
% [y,n] = sigadd(x1,n1,x2,n2)
% y = sum sequence over n, which includes n1 and n2
% x1 = first sequence over n1
% x2 = second sequence over n2 (n2 can be different from n1)
%
n = min(min(n1),min(n2)):max(max(n1),max(n2)); % duration of y(n)
y1 = zeros(1,length(n)); y2 = y1; % initialization
y1(find((n>=min(n1))&(n<=max(n1))==1))=x1; % x1 with duration of y
y2(find((n>=min(n2))&(n<=max(n2))==1))=x2; % x2 with duration of y
y = y1+y2; % sequence addition
采纳的回答
Geoff Hayes
2015-2-7
Syren - presumably you found sigadd.m from the submission by John Proakis at DSP Using MATLAB. In the Chapter 2 folder (CHAP_02/) there is an example file called ex020200.m which invokes the sigadd function as
[x1,n1] = sigadd(2*x11,n11,-3*x12,n12);
where each of the input vectors are 1x13 arrays. I suspect that you will need to do something similar in your example. The n1 and n2 inputs (your 2 and 3) should be arrays such as
n1 = [1 2 3];
n2 = [0 1 2];
with
sigadd([2 5 7],[1 2 3],[3 2 6],[0 1 2])
producing the desired output of
ans =
3 4 11 7
Try the above and see what happens!
更多回答（2 个）
Chidiebere Onuoha
2018-6-29
%I hope this will help:
%implements y(n)=x1(n)+x2(n)
% y = sums the sequence over n, which includes n1 and n2
%x1 = first sequence over n1
%x2 = second sequence over n2
function [y,n] = sigadd(x1,x2,n1,n2)
n = min(min(n1), min(n2)): max(max(n1),max(n2));
%duration of y(n)
y1 = zeros(1, length(n));
y2 = y1;
%initialization
y1(find((n>=min(n1))&(n<=max(n1))==1)) = x1;
% x1 with duration of y
y2(find((n>=min(n2))&(n<=max(n2))==1)) = x2;
% x2 with duration of y
y = y1+y2;
%sequence addition
end
3 个评论
Azmat Ameen
2020-12-15
编辑：Azmat Ameen
2020-12-15
error: not enough input argument.
please guide
Geoff Hayes
2020-12-17
Azmat - please post the full error message and line of code that is generating the error. Also, are you passing the correct/expected number of input arguments into whichever function that you are calling?
Nga Ly
2021-3-17
Not enough input arguments.
Error in sigadd (line 4)
n=min(min(n1),min(n2)):max(max(n1),max(n2));
buynaa
2022-11-27
0 个投票
x_1-x_2-5→max
〖〖(x〗_1-1)〗_2≤1
〖x_1+x〗_2≥3,5
0≤x_1≤5
0≤x_2≤5
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