did not underztand that line...it must be some symbolic language...
google for sound deadening/absorbing materials and techniques. when you figure out all the variables/factors, search for pdfs on the subject, what ever you don't understand, just put ".pdf" after it and enter in google, results will be full of researches/studies and course materials uploaded by various universities/institutes/organizations. Be prepared to go through 100s of pages of stuff you never heard of. keep doing this for a week or so, you'll understand the basics of the topic. After that you should know what to do.
that is one of the very few productive ways of using the internet that I know of...and it works, especially that pdf part.