How to add a particular noise on a signal?

1. How do you add noise to a signal?
2. How do I add noise to my ECG signal?
3. How do I add noise to a signal in Simulink?
4. Why do we add noise to a signal?

How do you add noise to a signal?

y = awgn( x , snr ) adds white Gaussian noise to the vector signal x . This syntax assumes that the power of x is 0 dBW.

How do I add noise to my ECG signal?

1) Create a 50 Hz sinusoid and then simply add it to your ECG signal. You can control the power of the 50 Hz noise by multiplying the sinusoid by some gain factor (can be less than or more than 1) before you add it to the ECG.

How do I add noise to a signal in Simulink?

To include noise in the simulation, you must select the Add noise check box on the Input Port block dialog box. This check box is selected by default. For information on how the blockset simulates noise, see Model Noise in an RF System.

Why do we add noise to a signal?

Summary: Adding noise to enhance a weak signal is a sensing phenomenon common in the animal world but unusual in manmade sensors. Now researchers have added a small amount of background noise to enhance very weak signals in a light source too dim to sense.