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Gaussian with non unit variance

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Negar
Negar 2011-4-1
Hi , how can I define a zero-mean gaussian noise with non-unit variance? I know that this command: x= randn(1,100); gives me the normal distribution(zero mean and unit variance), but how to define it for variance equal to f.ex 0.36 ??
tnx a lot...

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Jos (10584)
Jos (10584) 2011-4-1
Multiply the noise by the square root of the desired variance:
sqrt(MyVar) * randn(...)

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