How Can I Add Signal Noise To Other Signal As Main Signal

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hello all
I have two signal first use as noise others use as main signal I am trying add those signals to each other at the end I need a signal that mixed with noise how do I in Matlab?

thanks

Posted 16-Jan-15 4:23am

Sa.Mo

Updated 16-Jan-15 4:25am

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CPallini · Accepted Answer · 2015-01-16T05:22:00

Solution 1

What's wrong with their sum?

You may also add 'some degree' of the noise to the signal, e.g.

result(t) = main(t) + k * noise(t)

with 0 < k < 1.

Posted 16-Jan-15 5:22am

CPallini

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Sa.Mo 16-Jan-15 11:28am

my code is
length=size_signal;

for j=1:length
sn(j)=signal(j)+noise(j);
end
and as your answer why I need degree? please explain more. thanks

CPallini 16-Jan-15 11:35am

Well you straight add up the two components. If you want to see a 'progressively disturbed' signal you may add the noise using the k proportionality constant (e.g you may put at first k=.1, the k=.2, ...)