Use your text tool to type out something...

Now, go to Adjust > Add remove noise > Add noise
Now, set the noise number to whatever you want, click the gaussian selection, and check off monochrome.
And you're all done!
Use your text tool to type out something...

Now, go to Adjust > Add remove noise > Add noise
Now, set the noise number to whatever you want, click the gaussian selection, and check off monochrome.
And you're all done!