Hi Bayou, I have looked for this data myself but can also not find. I have used cotton and denim which have no published absorption
data that I could find. I took the thickness and density and compared it with our foam
technology to get some numbers to work with.
I am an acoustic engineer with over 30 years’ experience in the business. My technology has been used in Electric Lady Land Studios, Sony Music of New York, Cello Music and Films founded by Mark Levinson, and Saltmines Studios in Mesa, Arizona, along with hundreds of others.