Addition of gaussian noise

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Kirthika
Kirthika 2012-2-15
can you tell me matlab codes to add gaussian noise to a ecg signal?

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回答（2 个）

Tom Lane
Tom Lane 2012-2-15
I don't know anything about ecg signals, but "help randn" will show you how to generate Gaussian noise.
Thomas
Thomas 2012-2-15
To add white Gaussian noise:
(assuming you are adding noise for each time step, have your signal in vector 'signal')
rnoise=randn(1,NoTimeSteps);
NoiseAddedData=signal+rnoise;
something like this should work. (FYI, I'm modifying this from my code on Sensor networks, where I have to add white Gaussian noise to simulate noise from the environment for target tracking)

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