Perforated CCP vs carbon foam -Acoustics Forum-Acoustic Fields Forum

Dennis- for a given 2” depth panel, am I correct in thinking the perforated product over more absorption over an extended frequency range BUT a similar slope to the product (ie equally gradual ?) if so, wouldn’t the ceilin panel have applicability in vertical areas (walls ) as well ? I infer the only downside is it cannot be covered in fabric, but you allude to painting it (if so what paint is recommended, and codes that not change its absorptive characteristics ?)