Seismosoft | Earthquake Engineering Solutions

I can't find the algorithm in the help system. Where can I check the methodology for the algorithm?

I am curious about the process through which the envelope is generated when using acceleration data. Additionally, if there is a formula used for this generation, I would appreciate it if you could share that as well.
Thank you.

"I would like to know the algorithm or specific formula applied to the Random Process Starter, if there is any."