given a time axis:t=linspace(0,10,512); and a signal x=3sin(5t)-6cos(9t). how do i add random noise n to obtain a noisy signal y=x+n. help me write a mathlab expression for random noise that will match my time axis. thanks

1 次查看（过去 30 天）

Attai Abubakar 2014-10-24

回答： Rick Rosson 2014-10-27

mathlb use in digital filtering.

John D'Errico 2014-10-24

编辑：John D'Errico 2014-10-24

It is MATLAB. And read the help for randn.

Rick Rosson 2014-10-27

n = randn(size(t));

在 Help Center 和 File Exchange 中查找有关 Image Filtering 的更多信息

Find the treasures in MATLAB Central and discover how the community can help you!

Translated by

given a time axis:t=lin​space(0,10​,512); and a signal x=3sin(5t)-6cos(9t). how do i add random noise n to obtain a noisy signal y=x+n. help me write a mathlab expression for random noise that will match my time axis. thanks