As a practical matter, Table 4 presents, for a number of currently manufactured Owens-Corning Fiberglas products, the value of S (cgs rayls/in.), the value of R (cgs rayls for a 1/2" layer) and the value of amax at resonance for a tuned resonator filled with such a layer:

Sound absorptive treatment, covered with decorative perforated and drawn metal sheet, provides calm acoustical environment in the elegant dining room of the Scandinavia Hotel in Oslo.