Add random noise to recorded sample

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

Answer 1

[Vieniava]

yes, of course - check documentation

>> doc awgn

I recommend this usage:

y = awgn(x,snr,'measured') ;

[Red]

Is it possible to use randn function ?