How to add impulsive noise to a signal in MATLAB

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debojit sharma
debojit sharma 2023-2-28
回答： Meet 2023-3-6
How to add impulsive noise in a signal in Matlab. Is there any built in function available for this like we can add white gaussian noise using awgn function. So, is there any function available to add implusive noise to a signal also?
  1 个评论
Mathieu NOE
Mathieu NOE 2023-2-28
I am afraid that you will have to do it all by yourself
but there are already many answers in this forum about this topic
what kind of impulse shape are yu looking for

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回答（1 个）

Meet
Meet 2023-3-6
Hi,
To add impulsive noise to a signal in MATLAB, you can use the imnoise function, which can add different types of noise to an image or a signal.
To add impulsive noise specifically, you can use the imnoise function with the 'salt & pepper' option. This option adds random white and black pixels to the image or signal, simulating impulsive noise.
Here is an example of how to add impulsive noise to a signal in MATLAB:
% Generate a signal
signal = sin(2*pi*(0:0.001:10));
% Add impulsive noise
noisy_signal = imnoise(signal, 'salt & pepper', 0.005);
% Plot the original and noisy signals
subplot(2,1,1);
plot(signal);
title('Original signal');
subplot(2,1,2);
plot(noisy_signal);
title('Noisy signal with impulsive noise');
In this example, we generate a sine wave signal and add impulsive noise with a noise density of 0.005 (i.e., 0.5% of the signal's pixels are randomly set to white or black). The resulting signal is then plotted alongside the original signal to compare them visually.
For more details, please refer imnoise documentation.

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