Adding noise to my data set

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Ricardo López 2020-12-14

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https://ww2.mathworks.cn/matlabcentral/answers/693545-adding-noise-to-my-data-set

评论： Ricardo López 2020-12-14

Good afternoon,

I am trying to turn a 1 hour consumption signal into a 10 min consumption signal. To achive this, I am trying to add Gaussian noise to the hourly consumption signal. I would like to specify the mu and sigma values if possible around that noise.

I am trying awgn but it does not seem like i can add sigma and mu values.

Thank you for your time

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Answer 1

Daniel Pollard 2020-12-14

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https://ww2.mathworks.cn/matlabcentral/answers/693545-adding-noise-to-my-data-set#answer_575210

在 MATLAB Online 中打开

randn is a uniformly distributed random variable with mean of zero and standard deviation of 1. To get what you want, use

variable = mu + sigma*randn(1,1).

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Image Analyst 2020-12-14

And attach your "1 hour consumption signal" in a .mat file or a text file if you need more help.

Ricardo López 2020-12-14

1hoursignal.txt

Actually yes, thank you. Here is my hourly data: It is a vector containing 168 rows. I would like to transform it into a 10 min time-step with added white noise, resulting in a 1008 vector (168hours into 10 minutes). So the mean being each value of my hourly vector.

Thanks!

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