Add random noise to recorded sample

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Red
Red am 5 Feb. 2011
Hi all I'm new to Matlab and sorry for this question.Supposed that I have recorded my voice and saved it in a sample. I would like to add random noise which is lower in intensity to my recored voice. Is there a built-in function that could help me? Thanks in advance

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Vieniava
Vieniava am 5 Feb. 2011
yes, of course - check documentation
>> doc awgn
I recommend this usage:
y = awgn(x,snr,'measured') ;
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Red
Red am 6 Feb. 2011
Is it possible to use randn function ?

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